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1st impressions Solo ULD trial

Printed From: Graham Slee Hifi System Components
Category: Headphone Audio
Forum Name: Write A Review
Forum Description: Satisfied with your Graham Slee headphone amp? - share your experiences here
URL: https://www.hifisystemcomponents.com/forum/forum_posts.asp?TID=4435
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Topic: 1st impressions Solo ULD trial
Posted By: gbr2004uk
Subject: 1st impressions Solo ULD trial
Date Posted: 16 Feb 2018 at 6:42pm
Just got it today on the fortnight's trial and so far I'm loving it.  I've been testing it out on flac files from CD's that I have -- so far piano, string quartets, full orchestra (at ff or fff strength as well as pianissimo), and one song only so far.   I'm running it connected to the Bitzie (itself connected to desktop with a Lautus cable), using a Cusat50 cable, and power via PSU1.

It's just amazing, like stepping into a new sound world, as different as that.  The previous harshness I'd noted in some of the higher violin tones in the quartets has completely gone, the cello has gained enormous warmth and depth, there's tremendous clarity for example in the inner parts both of the chamber music and the more complex orchestral writing.   And the soundstage is really wide, wide enough for me anyway.

I'll try it with direct playing of CD's and a few videos of operas.  Tomorrow a run-through of some jazz CD's and more songs at various low-voice/high-voice samples.   And I also want to see if it makes a difference to the streamed music from Naxos Music Library (one of the glories of the web, along with the Petrucci Music Library and The Lieder Net Archive -- they don't pay me for these plugs, I just want everyone to know about them if they don't!)

So I'm raving about this Bitzie-Solo combo.   More later in the week.

Brian 


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Voyager 2009, Bitzie+Lautus cable 2013, Sennheiser HD700 & 650, Yamaha Clavinova



Replies:
Posted By: Ash
Date Posted: 16 Feb 2018 at 7:07pm
As the Bitzie has two analogue outputs, one can be left free and the other connected to Solo. This would allow rapid plugging in of your headphone of choice into either so you can more easily ascertain if you hear a difference between the outputs. What headphone are you using?

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We do not see things as they are. We see things as we are.


Posted By: gbr2004uk
Date Posted: 16 Feb 2018 at 10:35pm
Thanks Ash, yes I've been doing that, as well as comparing headphones -- the Sennheiser HD700 with the HD650.   There's a huge difference I can hear with the Solo as compared with the Bitzie on its own.  I can remember how 'blown away' I was when I first got the Bitzie, as until then all I'd had was direct connection of headphone to desktop (or laptop).  (Back in the day I also had a CD player - gosh! Do they still have them?)

The HD650 is still a great headphone (for me) but the 700 with the Solo/Bitzie combo does give a fuller sound -- the sound takes a little getting used to because with the above combo, it's much more 'forward'.

What do you, and most people here, (if this is a reasonable question!) use for playback from PC or Mac?  I am finding that foobar2000 seems to give the sound straight as it is (although I have sometimes tried adding the Dolby headphone wrapper, not that it makes much difference -- I used to combine it with something else which had to be in the correct order, but I've forgotten what it was and the particular file got lost in a pc crash I had last year and I stupidly hadn't backed it up).

I have used VLC (Videolan) but unless you keep everything absolutely flat it does seem to mess with the sound.  (I realise this part of the post really belongs somewhere else.)

I wondered if the DAC actually in theory or in practice should prevent any effect coming from the VLC or foobar, but experimenting around with it indicates that mucking about with the former (eg compressor / spatialiser etc) does certainly change the sound.
Best
Brian


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Voyager 2009, Bitzie+Lautus cable 2013, Sennheiser HD700 & 650, Yamaha Clavinova


Posted By: gbr2004uk
Date Posted: 16 Feb 2018 at 10:38pm
PS  Channel mixer (?) I think it was, plus the Dolby but it doesn't seem to exist any more
http://www.foobar2000.org/components" rel="nofollow - https://www.foobar2000.org/components


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Voyager 2009, Bitzie+Lautus cable 2013, Sennheiser HD700 & 650, Yamaha Clavinova


Posted By: Ash
Date Posted: 16 Feb 2018 at 10:55pm
There must be something about the HD650/HD700 that benefits from the Solo ULDE circuitry then. I have used HD250i&ii/HD540i&ii/HD560ii/HD800 and AKG K1000 with the Bitzie. I've used the 540/560 models with the Solo as well and couldn't really hear any improvement compared to a lone Bitzie but maybe I'm just tone deaf. Above a certain level of reproduction, I don't think I can hear tiny differences in sound without spending weeks or months using the devices and really accustoming my "subconscious" or "unconscious competent" hearing to them, unless of course the differences are quite significant and obvious. Even then, I can sometimes find myself unable to distinguish. I'm not cut out for being a hi-fi "buff"; I guess I may base some of my judgements on how much I'm enjoying my choice of music. I have only used VLC and Winamp so far but want to try others soon.

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We do not see things as they are. We see things as we are.


Posted By: gbr2004uk
Date Posted: 17 Feb 2018 at 1:05am
I'd hate to feel a right total fool with the embarrassment of changing my mind having posted such a rave notice of my initial impressions.   You find something similar in all sorts of human endeavours.  People often want to believe that, say, the psychotherapist whose fees they're paying is really, really doing them good, better than any previous -- until they realise much later it aint so.  Or plays, novels, films that get hugely over-rated by critics, reviewers and the public.  Or we seem to find awesome virtues (or whatever) in people we've recently got to know, but the whatever-it-was didn't belong to them at all, if they belonged anywhere, apart from one's own head.

So I spent hours last evening trying CD after CD, classical, jazz, opera, DVD's of a few movies ...  Switching rapidly between Bitzie on its own and Solo + Bitzie, really, really wanting it to be objectively true that the improvement I was hearing wasn't just subjective wishful thinking.   I mean, there shouldn't be any doubt, should there?  If something is that good?

I need to give it a break, apart from its being 1 a.m. as I type!  (Nagging thought from the never-resting subconscious, should I spend the money instead on a different kind of headphone?  OMG.  Or even a new digital piano, trading in the old Clavinova?  I think this is called dithering ...)

But I wanted to ask a practical question.   From the day I got the Bitzie, I've left it plugged into the desktop whenever the desktop is on.  I've listened to everything through it, music, news, youtubery, rubbish(!).   My question is, I don't suppose it's advisable to leave the PSU1 plugged in 24/365?

All best
Brian


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Voyager 2009, Bitzie+Lautus cable 2013, Sennheiser HD700 & 650, Yamaha Clavinova


Posted By: Aussie Mick
Date Posted: 17 Feb 2018 at 3:17am
Hi Brian,
   My PSU1 (3 of them) stay on 24/7, 365, unless it’s a leap year. They’ve been safe and just fine on my floor. No overheating or anything detectable. My only exception is lightning storms, which are rare in my neck of the woods. Everything is switched on, all of the time. Never a problem.
Cheers,
Mick.

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Rega RP8 - Apheta 2 - Accession MC Enigma PS -Solo ULDE (Focal Utopia) - PS Audio M700 - Fical Kanta No2


Posted By: Ash
Date Posted: 17 Feb 2018 at 9:48am
All of Graham's electronics are designed to be powered on 24/7/365 as he is from a broadcast background where this is a necessity. They reach optimum performance after several days or weeks apparently. Never had mine on constantly for longer than a week but that's my loss. PSU1 must be sat on hard floor rather than on carpet so there is no risk of it overheating over time.

Regarding Bitzie vs Bitzie+Solo, I suspect it depends on the drive needs of the headphone being used. My vintage Sennheisers were all very close in needs to Graham's reference HD250 hence why the Solo didn't really give them anything extra compared to just the Bitzie (it already satisfied their particular needs). Not sure if Solo would help to further linearise headphones that have a less even frequency response.

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We do not see things as they are. We see things as we are.


Posted By: gbr2004uk
Date Posted: 17 Feb 2018 at 1:14pm
Thanks Mick.  (I've been known to work at my pc in a lightning storm, but better sense has prevailed after a minute or two.)  I guess I'd leave the PSU1 on all day, as with the desktop but turn the wall switch off at night, when the pc is shut down anyway.  But it's good to know the machinery doesn't overheat.

I've been reading more about the problems with tube-amps, not the least being that 4 of them on a machine must get so darn' hot!  Maybe OK in a (British) winter, not so good even in the (British) summer.
all best
Brian


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Voyager 2009, Bitzie+Lautus cable 2013, Sennheiser HD700 & 650, Yamaha Clavinova


Posted By: gbr2004uk
Date Posted: 17 Feb 2018 at 1:25pm
That's helpful again, Ash, thanks.  My arrangement is a work station with the pc, to the right another work station with printer, drawers for components etc, to the left a filing cabinet whose top is level with the pc desktop, and on the surface of the latter sits the PSU1, where it seems to be happy.  (It's only about 3 inches from the router and I hope they don't get electronically entangled.  I can't hear any fights or anything.)

The Bitzie remains fantastic and I couldn't now do without it.  I'm still testing it with the Solo.  Just got some Leonard Bernstein CD's which should give them a run for their money!   http://tinyurl.com/y8hfz66h" rel="nofollow - https://tinyurl.com/y8hfz66h

all best
Brian




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Voyager 2009, Bitzie+Lautus cable 2013, Sennheiser HD700 & 650, Yamaha Clavinova


Posted By: tg [RIP]
Date Posted: 18 Feb 2018 at 3:29am
Just adding my  $0.2 here Brian, you will not hear the best of the Solo (IMO) until it has been powered on for more than a day (same goes for the phono preamps IME).
So for best performance do not power down except perhaps on occasion of electrical storms.
Like Mick my kit with 4 x PSU1 has not been turned off for years bar a couple of blackouts when the entire suburb was out.
As for the comparisons, rather than driving yourself to distraction with quick swapping, just listen to the Solo output for whatever music you like for say 10 days, then switch back to the Bitzie direct and play some of the that music over again and see if there seems to be something missing.


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Tony G


Posted By: gbr2004uk
Date Posted: 18 Feb 2018 at 12:06pm
Originally posted by tg tg wrote:

Just adding my  $0.2 here Brian, you will not hear the best of the Solo (IMO) until it has been powered on for more than a day (same goes for the phono preamps IME).
So for best performance do not power down except perhaps on occasion of electrical storms.
Like Mick my kit with 4 x PSU1 has not been turned off for years bar a couple of blackouts when the entire suburb was out.
As for the comparisons, rather than driving yourself to distraction with quick swapping, just listen to the Solo output for whatever music you like for say 10 days, then switch back to the Bitzie direct and play some of the that music over again and see if there seems to be something missing.

Thanks tg.  I had misunderstood the whole thing about continuous powering, thinking it only applied to new equipment (as with brand new headphones, lots of new musical instruments, "playing them in").  But you're emphasising (and I've now read this elsewhere too) that these amps should be "warm" all the time, however well played in they've become.

This doesn't work with the Bitzie of course, unless you keep the computer on all night (as it is I set it to "sleep" when I'm not using it, but it's off and night, and re reconnects the Bitzie next morning.   Unless there's some other way of doing it?  Perhaps that split power cable of Graham's that someone mentioned the other day?  Maybe that's worth thinking about if it keeps the Bitzie warm and up to the mark?  Any views on that?

Your suggestion about listening to the Solo for several days and then switching back sounds good to me.   If there's a real good difference, it should be immediately obvious.

All best
Brian
 


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Voyager 2009, Bitzie+Lautus cable 2013, Sennheiser HD700 & 650, Yamaha Clavinova


Posted By: Fatmangolf
Date Posted: 19 Feb 2018 at 7:21pm
The Powerfire is half way down this page:

https://www.hifisystemcomponents.com/dacs-digital-audio/bitzie-usb-dac.html" rel="nofollow - https://www.hifisystemcomponents.com/dacs-digital-audio/bitzie-usb-dac.html

and uses a mains to USB adaptor (not included) to power the Bitzie which means it stays on when you PC/Mac/etc. turns off. £110 less member discount. There is a bundle price with the Btizie but you already have one I think.



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Jon

Open mind and ears whilst owning GSP Genera, Accession M, Accession MC, Elevator EXP, Solo ULDE, Proprius amps, Cusat50 cables, Lautus digital cable, Spatia cables and links, and a Majestic DAC.


Posted By: gbr2004uk
Date Posted: 19 Feb 2018 at 7:58pm
Originally posted by Fatmangolf Fatmangolf wrote:

The Powerfire

Yes, I did see it, thanks.  By the way, I've been reading up more stuff around the web, this business of tube amps producing even harmonics, and solid states producing odd harmonics, the former sounding better to most people, the latter, the reverse.   However other people say that's only important when producing music, as from a guitar, and has no relevance to reproducing the music as from a computer (because on CDs etc, all the sound and propensity to distortion and the rest is taken care of by the original engineer).

I'm wondering how Graham deals with this issue, because I also read that it's possible in the construction of solid state amps to deal with this issue of harmonics to minimise any unpleasant effects and enhance the good.

I must say, I've never noticed any unwanted sort of distortion at all from the Bitzie -- it's such an excellent amp that always sounds great to me.

Oh, in further response to your reply, Jon, I guess I could try the Powerfire on appro and see if it makes a difference, but I'll get back to  you as and when I'm ready with that -- one thing at a time and I'm still in back-and-forth dialogue with the Solo DLE!
all best
Brian 


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Voyager 2009, Bitzie+Lautus cable 2013, Sennheiser HD700 & 650, Yamaha Clavinova


Posted By: Graham Slee
Date Posted: 19 Feb 2018 at 8:36pm
Originally posted by gbr2004uk gbr2004uk wrote:

By the way, I've been reading up more stuff around the web, this business of tube amps producing even harmonics, and solid states producing odd harmonics, the former sounding better to most people, the latter, the reverse.


Marcus Graham Scroggie, B.Sc., F.I.E.E., (1901–1989) was a British technical author active in the fields of radio and electronics.

I wish I could call on him to explain to you and many many others what utter bullsh*t you've been reading.

Probably written by a non-technical marketing man and regurgitated like vomit all over the web.


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That none should be able to park up and enjoy the view without a smartphone and the knowledge in how to use apps


Posted By: gbr2004uk
Date Posted: 19 Feb 2018 at 9:36pm
Originally posted by Graham Slee Graham Slee wrote:

[QUOTE=gbr2004uk] ... what utter bullsh*t you've been reading. ...

Well, Graham, I'm glad you've cleared that up! Wink  A colleague of mine (before I'd retired) kept a large mug prominently placed on her desk with words of wisdom for her patients painted on it, "Please don't confuse your google research with my medical degree".

All best
Brian


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Voyager 2009, Bitzie+Lautus cable 2013, Sennheiser HD700 & 650, Yamaha Clavinova


Posted By: Fatmangolf
Date Posted: 19 Feb 2018 at 10:32pm
Spot on. As I turned the page I saw Graham has put it much better than I could have.



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Jon

Open mind and ears whilst owning GSP Genera, Accession M, Accession MC, Elevator EXP, Solo ULDE, Proprius amps, Cusat50 cables, Lautus digital cable, Spatia cables and links, and a Majestic DAC.


Posted By: Graham Slee
Date Posted: 20 Feb 2018 at 7:03am
A simple class A stage is akin to a weight trainer pulling down on a sprung device. He pulls down and the spring pulls up. There is a weight attached to the end of the spring - the other end fastened to the gym ceiling - such that the device's other end hangs low enough to be reached.

The weight trainer can pull it all the way to the ground, but the spring cannot pull it all the way to the ceiling. If it were the resultant cycles would describe a sine wave.

However, the upward half cycle starts to flatten out because of the weight on the spring and so describes a fatter curve.

A sine wave describes an upward facing parabola followed by a downward facing parabola. One is OK the other is not. A parabola is a graph of a quadratic function, y = x2. The distortion is therefore second harmonic.

Now replace the spring with a resistor, and the weight trainer with a valve, it is still the graph of a quadratic function.

So replace the valve with a transistor, it is still the graph of a quadratic function.

And now an FET, it is still a quadratic function.

There are many more mathematical proofs.

Now, if we make it push-pull, like a class AB power output stage, we can imagine both parabolas being misshapen. This describes a polynomial function y = x3 - third harmonic. We can use valves or we can use transistors.

And if we make push or pull different the polynomial function can be y = x4 - fourth harmonic.

In reality there are many other factors, but the above are the dominant ones.

But you don't have to do mathematics to be a salesman!

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That none should be able to park up and enjoy the view without a smartphone and the knowledge in how to use apps


Posted By: Graham Slee
Date Posted: 20 Feb 2018 at 9:30am
Now, we can look at the above harmonic distortion in another way. We can imagine a straight diagonal line which represents linearity ( y = x ) but one end - the spring end - causes the line to curve. Because we only have one curve it must be of the form y = x2, and that is a quadratic function and so is second order.

If we make it push pull then we will have curves at both ends. This makes it a polynomial of the form y = x3, and that is third order.

But if we unbalance the push pull we have both second and third orders and possibly 4th order, and we could if we wanted, emphasize the second and 4th orders.

One such circuit is the quasi-complimentary output stage used in several early transistor amplifiers due to the lack of good PNP power transistors of that time.

Now, it can also be argued that the VAS (voltage amplifier stage) contributes to the third order, and that will be true where class A-A techniques are used because class A-A is a form of push pull.

And, unless you have a very low powered SET (single ended tube) driving an output transformer (try making it high power...), then you will need two valves working in push pull, and therefore there will be a curve at each end of the line, which makes it third order.

But then it could be argued that the VAS uses single ended valves which have only one curve making second order harmonics, and so you have a combination of second and third with a valve amp.

And also, the early transistor amplifiers by the above argument have a combination of second and third.

It is only when we bring on the fully complimentary transistor amplifier, supposedly done that way to cancel distortion, that we can't have any (or enough to warrant it) second order harmonics, because we have double ended curves everywhere.

But what if the distortion from a transistor amplifier was so low it could not be heard?

The valve amplifier would then obviously differ because it is producing distortion.

But if that distortion was also low enough as not to be detected by ear, what then could be the difference?

I have been telling you that answer for a number of years.



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That none should be able to park up and enjoy the view without a smartphone and the knowledge in how to use apps


Posted By: gbr2004uk
Date Posted: 20 Feb 2018 at 10:58am
Thanks Graham.  I did used to be quite good at maths and physics when I was a student but that's a long time ago!  In simple and very basic non technical terms what does your answer mean, in terms of the sound of a wide variety of music through an amplifier?

That the longrunning, neverending back-&-forth between tubes-or-solidstate is ... what?  A waste of time, based on a misunderstanding, ultimately, as beauty is in the eye of the beholder, sound is in the ear of the auditor?

I'm not the hypothetical salesman but I am the (generalised) hypothetical purchaser, and an honest salesman doesn't say to me, 'Valves are definitely the way to go', he says ... what?   Try 'em all and see or what's the size of your budget?

All best
Brian




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Voyager 2009, Bitzie+Lautus cable 2013, Sennheiser HD700 & 650, Yamaha Clavinova


Posted By: Fatmangolf
Date Posted: 20 Feb 2018 at 8:20pm
This is one of many occasions where I know Graham knows a lot more than me and that's why my music sounds great through his gear. I'd say let your ears decide and then step put of this thread.



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Jon

Open mind and ears whilst owning GSP Genera, Accession M, Accession MC, Elevator EXP, Solo ULDE, Proprius amps, Cusat50 cables, Lautus digital cable, Spatia cables and links, and a Majestic DAC.


Posted By: Graham Slee
Date Posted: 20 Feb 2018 at 8:47pm
I can be at it tweaking a product by increments for months before I'm happy with it, and that's because all kinds of things make a difference. Tweaking distortion products is what others think they have to do, because they all follow the trend.

What does make a difference is stability (phase and gain margins) and trying to make any negative feedback as 180 degrees as it can be, especially in the ears most sensitive region (mids).

Older valve circuits do the 180 degree thing, and solid-state can also, but a designer must first understand why, be able to acknowledge it, and know how it's done. But instead we often end up with a "follow the bear" attitude where "designers" go in for 'name dropping', the use of 'forum favourites' (again "follow the bear") such as the http://www.ti.com/lit/ds/symlink/lme49720.pdf" rel="nofollow - LME49720 opamp , but take a look at fig. 104 - 180 degrees has no chance. But the customer also follows. That's their loss.


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That none should be able to park up and enjoy the view without a smartphone and the knowledge in how to use apps


Posted By: gbr2004uk
Date Posted: 20 Feb 2018 at 8:53pm
Not every manufacturer lets you try out their stuff on appro (in fact I haven't come across one other one) the way GS lets us so generously.  And it's not so easy to visit factories/showrooms that are relatively far from home.  Around the web I keep reading about people with 5 or 6 different kinds of headphone plus maybe a few different amps.  I think I'm being a bit extravagant hanging on to my old 650 while I have the 700.  I go to experts who know about a subject that I don't know anything about for advice.  The music I play sounds nothing coming from the pc alone but what brings it to life and makes it sing and dance and glow is the Bitzie.  Sometimes I convince myself adding the Solo makes a difference, and sometimes I can't.

When I earned my living practising psychiatry I used to do a lot of hypnosis, so I'm well aware of the power of human suggestibility, including the tricks self-suggestion can play.

Not sure if I'm being politely asked to shut up Wink  Or maybe I should feel guilty and apologise if inadvertently I've hit some sensitive spot.  I certainly didn't intend to and I'm sorry if I have.

All best
Brian




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Voyager 2009, Bitzie+Lautus cable 2013, Sennheiser HD700 & 650, Yamaha Clavinova


Posted By: gbr2004uk
Date Posted: 20 Feb 2018 at 8:59pm
I'm lost.  Totally lost! Confused

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Voyager 2009, Bitzie+Lautus cable 2013, Sennheiser HD700 & 650, Yamaha Clavinova


Posted By: Graham Slee
Date Posted: 20 Feb 2018 at 9:12pm
Originally posted by gbr2004uk gbr2004uk wrote:

Not sure if I'm being politely asked to shut up Wink  Or maybe I should feel guilty and apologise if inadvertently I've hit some sensitive spot.  I certainly didn't intend to and I'm sorry if I have.


Not at all! Never!

Just illustrating the many factors which lead to how things sound.

And sorry I lost you here. It's just that there is a lot more to it than what the marketing men want you to believe, and the real engineer gets really brassed off by them.


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That none should be able to park up and enjoy the view without a smartphone and the knowledge in how to use apps


Posted By: Ash
Date Posted: 20 Feb 2018 at 9:34pm
Graham is easy to misunderstand but he means well. He has to rant sometimes to vent his frustration with the pretensions of the hi-fi industry.

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We do not see things as they are. We see things as we are.


Posted By: Aussie Mick
Date Posted: 21 Feb 2018 at 12:55pm
Originally posted by gbr2004uk gbr2004uk wrote:

I'm lost.  Totally lost! Confused


One thing I’ve learned on this forum is that the overwhelming advice given is to trust your own ears. You’re not buying a product to play other people, but to yourself. If you’re happy, which I suppose means that it makes your musical experience more involving, regardless of the reason, then it’s money well spent.

I agree with the advice to put the ULDE in your system and leave it there for a week, then swap back to the Bitzie. If you miss the ULDE you have your answer.

This search for satisfaction is terrific, isn’t it? I’ve not read a Hi-Fi mag or visited a shop since my system arrived where it is now. The Slee electronics I own are a great deal to do with that.
Music!!!
Cheers,
Mick.

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Rega RP8 - Apheta 2 - Accession MC Enigma PS -Solo ULDE (Focal Utopia) - PS Audio M700 - Fical Kanta No2


Posted By: gbr2004uk
Date Posted: 21 Feb 2018 at 1:20pm
Thanks Graham! Smile  My maths/physics are pretty well oxidized now!
Best
Brian


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Voyager 2009, Bitzie+Lautus cable 2013, Sennheiser HD700 & 650, Yamaha Clavinova


Posted By: gbr2004uk
Date Posted: 23 Feb 2018 at 3:45pm
More considered impression (latest).  Compared to the Bitzie/Lautus alone, adding the Solo UL/Cusat does give a noticeably enhanced fullness and spaciousness to certain timbres and pitches (strings, woodwind, higher frequencies) using the HD700, but for my purposes and disposable income not £X-enough of difference/enhancement to justify the investment.

But I've also taken the HD650 away from its semi-permanent connection to the Yamaha Clavinova (so useful for not inflicting my amateur keyboard efforts on anyone within earshot, especially during unsocial hours) and given it another go with the Bitzie.   (By the way all my pc music is stored as flac files, which is how I play it, using mostly foobar or occasionally VLC audio at flat EQ.)

The HD650 does extremely well with the Bitzie and seems to me to avoid the worst of the peak (Edit: of the 700) so often described around the web as "notorious" — see e.g.  http://https://www.head-fi.org/threads/sennheiser-hd700-review.614011/" rel="nofollow - http://https://www.head-fi.org/threads/sennheiser-hd700-review.614011/  — but again, to my now old ears, the difference is fairly small.

I'm just coming up to halfway through the fortnight's trial and it's been a fascinating learning experience, if a somewhat bumpy one!   In the years since I've been using the Bitzie on a daily basis, and for hours at a time, I never had any reason to complain or to want more out of the system — until I recently got sets of Beethoven and Schubert string quartets, all on brightly-recorded CDs.  And there was something very unenjoyable about the higher frequencies — neurophysiological changes in my auditory apparatus?  something to do with CD recording techniques?  a sudden awakening to what had always been deficiencies in the HD700?

I now had the same response to the same frequencies / timbres in the recently released Marin-Alsop-Bernstein recordings: most of them fine, but some moments far too shrill (with the HD700, I've not played these on the 650).

By the way, I'm wondering if experimenting with lowering the EQ level (as can be done more easily with the VLC software) would help?  I'm about to try it -- although worry about whether it would alter the quality of the sound.  (Years before I read anything about hifi and the audiophile world, mucking about with EQ was the only thing I did apart from twiddling the volume knob.)

All best
Brian



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Voyager 2009, Bitzie+Lautus cable 2013, Sennheiser HD700 & 650, Yamaha Clavinova


Posted By: gbr2004uk
Date Posted: 23 Feb 2018 at 3:55pm
That link doesn't seem to work.  Try:
http://www.head-fi.org/ " rel="nofollow - www.head-fi.org/  ; threads/sennheiser-hd700  -review.   614011/   (without the gaps of course)


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Voyager 2009, Bitzie+Lautus cable 2013, Sennheiser HD700 & 650, Yamaha Clavinova


Posted By: Ash
Date Posted: 23 Feb 2018 at 9:32pm
Unfortunately I don't sell re-conditioned HD250II or HD540II headphones anymore. If I did, I would recommend them over the HD650/HD700 as I suspect the improvement would be quite significant.

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We do not see things as they are. We see things as we are.


Posted By: gbr2004uk
Date Posted: 23 Feb 2018 at 9:50pm
Thanks Ash.   I'm thinking of Beyerdynamic ...  Perhaps I read too much stuff on the web Wink but I think (now!) I want something that's even throughout the frequencies, no peaks, just well balanced.   I gasped when I saw that it's possible to spend thousands on electrostatic h'phones but I'm totally sure I don't want them.

I gather pretty much everything goes well with the Bitzie, but any recommendations?  And I know it's well nigh impossible to recommend one's own personal favourite to anyone else (one person's meat another's poison, etc ...)   I gather Grado are very popular amongst audiophiles.   I found a place that does a 30-day return, full refunds.  I'm tempted.

Cheers
Brian


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Voyager 2009, Bitzie+Lautus cable 2013, Sennheiser HD700 & 650, Yamaha Clavinova


Posted By: Ash
Date Posted: 23 Feb 2018 at 10:05pm
HD540II is the only thing I would personally recommend wholeheartedly. I sold many on this forum after re-foaming all the earpads and had many pleased customers. That was about 4 years ago now. I quit headphones in 2015 after using AKG K1000 for a while then converted to custom speaker listening. HD540II provides a clear sound with an even frequency balance. It's an open-back headphone though.

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We do not see things as they are. We see things as we are.


Posted By: gbr2004uk
Date Posted: 24 Feb 2018 at 6:44pm
Originally posted by Ash Ash wrote:

HD540II is the only thing I would personally recommend wholeheartedly. ...
I'll spend time checking that out, Ash.  Thanks.  I've had only open-backed h'phones in the past and prefer the idea to closed back.
All best
Brian


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Voyager 2009, Bitzie+Lautus cable 2013, Sennheiser HD700 & 650, Yamaha Clavinova


Posted By: Ash
Date Posted: 24 Feb 2018 at 9:21pm
Whatever you choose, just remember that high prices are no guarantee of high quality engineering and there is a lot of trash masquerading as professional equipment. Be sensible, critical and attentive with equipment choices.

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We do not see things as they are. We see things as we are.



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