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Accession for Moving Coil

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Post Options Post Options   Thanks (0) Thanks(0)   Quote morris_minor Quote  Post ReplyReply Direct Link To This Post Posted: 02 Oct 2018 at 1:02pm
It's always good reading your posts, Sashi! MCs need a different treatment to MMs which is why Graham's never done a MM/MC stage with just switchable gain. And why the Accession MC is better than the Accession MM + Elevator (good as that combo is). 

I know Graham only sells the Enigma PSU1 for the AccMC - I think the jury is out on whether it improves the performance of MM phono stages. You'll have to let us know what happens if you try it with other bits of kit!
Bob

Majestic DAC/pre-amp
Accession MC/Enigma, Accession MM, Reflex M, Elevator EXP, Era Gold V
Solo ULDE, Novo, Lautus USB and digital, Libran balanced, CuSat50
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Post Options Post Options   Thanks (0) Thanks(0)   Quote shashirao Quote  Post ReplyReply Direct Link To This Post Posted: 02 Oct 2018 at 4:06am
Some more updates from the Accession MC world. This is the 3rd or 4th day of listening and I keep rediscovering things.

For instance, I forgot that I was using a stereo cartridge (Presentation MC) on a Mono vinyls. Traditionally I have had the issue of hearing some noise thanks to the additional detail. And I have had the best results with mono cartridges.

However what turned into a eureka moment was that absence of noise. Wait...I have never heard my Presentation play mono records with such clarity. The version I compare with is the Accession MM. So either:

a. Accession MC is better than Accession MM (actually better suited for the MC cart)
b. The Enigma is making a difference (I need to verify this by using the Enigma with Accession MM....note to self: buy more Enigma)

The next revelation was regarding bleeding sounds from the upcoming groove. Typically I hear bleeding noise at the start of the track or in some dialogue tracks...where there is mostly silence puntuated with some voices.

With the Accession MC, I noticed the sound bleeding has reduced...not completely gone. And the dialogue tracks now exhibit interesting behavior. Earlier I can hear the bleeding of the upcoming dialogue. Now I hear echo of the just spoken sentance. With song tracks I still hear upcoming song - but is has reduced to almost insignificant. Again not sure if this is the Accession or the Enigma. I love it regardless.

And lastly I observed with the Accession MC/Enigma setup, there is a remarkable increase in the black noise or quiet background. Its like really listening to people in a soundproof room. I can hear the hiss/lisp/whisper of a singer. The reverb in my listening is enhanced...not artifical..but of vocals and instrument sounds bouncing around in an enclosed soundstage. Bliss!

Cheers
Shashi
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Post Options Post Options   Thanks (0) Thanks(0)   Quote shashirao Quote  Post ReplyReply Direct Link To This Post Posted: 30 Sep 2018 at 5:36am
Quick notes on something I hear as difference between the Accession MM and Accession MC. I compared one of my recordings that used the same cartridge Presentation MC. The track I sampled was a solo vocalist with an acoustic guitar for accompaniment and minimal congas for rhythm.

The MM version is louder, pleasing and very partial to the vocals. The guitars meld with the vocals playing the supporting role.

The MC version is quieter in the sense, the vocals is centerstage but does not hog the entire soundstage. The guitar is a revelation - its movement can be easily followed - one can almost ignore the vocals and focus on the strings.

Another small difference - since the source vinyl is from the 60s, it plays with some surface noise. The Accession MM output is quieter than its MC counterpart. And I think this is where the fabled MC detailed output comes alive. Not noisy, but more information I guess.

More to follow
Shashi
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Post Options Post Options   Thanks (1) Thanks(1)   Quote shashirao Quote  Post ReplyReply Direct Link To This Post Posted: 28 Sep 2018 at 6:00pm
Already ahead of you...I had brought nay insisted the Accession MC with the Enigma. Which brings another interesting item to test - switch the Enigma with the regular PSU1 and check the difference.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Suggs Quote  Post ReplyReply Direct Link To This Post Posted: 28 Sep 2018 at 6:43am
Glad that you liked it, it will just keep delivering BUT...just try adding the Enigma PSU to it instead of the normal PSU and then you WILL hear what the Accession C is really capable of Wink
Derek
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Post Options Post Options   Thanks (0) Thanks(0)   Quote shashirao Quote  Post ReplyReply Direct Link To This Post Posted: 27 Sep 2018 at 9:06pm
Finally - I got my tonearm back after maintenance (pin needed re-soldering).

I purchase the Accession MC a few months ago and had been waiting to really play it - and finally the moment arrived today.

First impression - Graham Slee has killed it yet again!
Setup: Project xTension 12 classic with Palo Santos Presentation MC cartridge.
Sampled 3 song tracks over Sennheiser HDP 250 headphones.

The tracks I played included a mix of stereo and mono pressings. The stereo reproduction was tight/crisp with details revealed loud and strong...layer after layer of music. I ended up playing catch with instruments I wanted to follow in the recording. And I was able to listen to instrument transition and all those acoustic play delicacy that one experiences in a recording room. The stereo vinyl is from the early 80s and well beaten up (test record for me). The Accession's ability to filter out the music from the noise was quite evident. There are the expected noise from a well used vinyl...but as expected it hardly interfered with the music.

As for the fabled MC details - too early to ascertain. I did not miss any sound detail (having heard the track many times before). But I am curious to compare it with my Revelation C. A straight MC to MC compare.

I played the music on the highest volume setting and did not encounter any elevation of noise or fatigue.

Then came the mono pressing. This was an early 80s CBS recording that was troublesome for most MC cartridges - especially when the singer hits the high notes. The previous experiences have been from shrill, loud to downright grating on the ears. I found the MM cartridge (Clearaudio Charisma v2) handled this recording the best.

And today, the magical doors to musical nirvana opened up. My Presentation cartridge is known for detailed soundstage and not shy of playing a bad record in all its horrid glory. At the start of the track, one can distinctly hear the click of the recording equipment and the squealing of the master tape motor. With the Accession MC, the Presentation played the same details. However the vocal shrill was not shiny and grating anyore. In fact for the first time I got to appreciate the singer scaling the high notes and her dextirity. The percussion held its place and it was a fantastic performance by this setup.

I can confidently attribute the Accession MC's handling of the Presentation as the huge and only factor that allowed me to listen to its detailed reproduction as intended when recorded. I noticed that I had my headphone amplifier set to -8db input - and it sounded perfect. Increased to -4db input did not distort the sound, but increased the sound level as expected - and was louder than what I needed. So back to -8db input for this recording.


All this in under 20 minutes of listening....and I have many years of listening to look forward to. So on first glance - Graham Slee - thank you for improving my MC cartridges. I remember the Accession MM's ability to filter out noise upgraded my vinyl collection grading by a few notches.

If there is anything better coming from your workshop forthe pre-amp world - I say give me a year or two to savor the Accession MC and establish a new baseline to my listening standards.

Cheers
Shashi
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Post Options Post Options   Thanks (0) Thanks(0)   Quote shashirao Quote  Post ReplyReply Direct Link To This Post Posted: 29 Jul 2018 at 7:24pm
LOL....every room should have one!!
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