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morris_minor wrote:
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Valves Seen On Graham Slee's Desk! |
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CageyH 
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Joined: 30 Apr 2012 Location: Toulouse, Franc Status: Offline Points: 1678 |
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 Posted: 30 Jan 2016 at 4:39pm |
Both my pre and power amps have valves in them, but neither are exposed. I would not buy an exposed valve audio product with a 7 month old daughter in the house.
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Kevin
European loan coordinator, based near Toulouse, France. |
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Ash
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Joined: 18 Mar 2013 Location: Dorset Status: Offline Points: 4334 |
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Posted: 30 Jan 2016 at 4:59pm |
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I would not buy any audio product that gets really hot, due to safety/fire concerns. Not the sort of thing I'd be happy to leave switched on all the time then leave unattended in the house when I go to work.
Majestic/Proprius oscillating warmth in a cool place is as hot as I'm happy to go. Anything hotter, in my personal opinion, is poorly designed electronics.
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CageyH
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Joined: 30 Apr 2012 Location: Toulouse, Franc Status: Offline Points: 1678 |
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Posted: 30 Jan 2016 at 5:08pm |
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You don't like "pure" class A then Ash?
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Kevin
European loan coordinator, based near Toulouse, France. |
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BackinBlack
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Joined: 05 Feb 2012 Location: Hinton, N'hants Status: Offline Points: 2020 |
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Posted: 30 Jan 2016 at 5:25pm |
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This will be an interesting exercise. There is no question that good (sounding) valve pre and power amplifiers exist; but I would be surprised if they do not all use the valves within their original design parameters, particularly the HT voltages required by the designer. The success of such amplifiers relies heavily on well designed power supplies and for power amplifiers also well designed and built transformers. As all of us here know, this almost inevitably means increased cost for components and certification (assuming they want to remain legal) and weighty transformers for power amps. There is also inevitably concern over the safety of devices using potentially lethal voltages.
It seems that in an attempt to dispense with these difficult and expensive aspects some "clever" designers have chosen to go with standard cheap low voltage "HT" power supplies, with varying degrees of success. If I understand correctly what Graham wants to investigate is the practicality of the design and performance of valves in unorthodox circuits using low "HT" voltages, where the valves are outside their design operating envelopes. If successful then I can fully understand that this could open up a new market sector for GSP. I'm keeping and open mind.
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Just listen, if it sounds good to you, enjoy it.
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Ash
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Joined: 18 Mar 2013 Location: Dorset Status: Offline Points: 4334 |
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Posted: 30 Jan 2016 at 5:34pm |
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I only like what sounds good, isn't a hazard and isn't physically supermassive.
I don't understand why anyone would think that electronics should sound best when operating hot and generating lots of heat. What's the rationale?? I'll never understand the world of hi-fi. I have always been very careful with whose judgment I decide to trust. Spend long enough researching a subject and reasoning with a logical mind and eventually it becomes clear who is a genuine expert in their field of research and who is simply pretending to be an expert, who only has the right answers because you're asking the wrong questions.
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Drewan77
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Joined: 25 May 2013 Location: Chester,England Status: Offline Points: 1544 |
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Posted: 30 Jan 2016 at 5:35pm |
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Apart from cannibalising my Dads' old valve radiogram to make a rudimentary separates setup when I was a student, I have not had any popping, banging or glowing in my system since. I was quite fond of the smell though.
I recall being told that valves performance 'improves' and then gradually declines over time whereas solid state tends to have a much longer period of stability and 'lasts longer'. Is that so? There's also the issue of tube rolling, another area of audiophile nervosa for us all to fret over whilst searching for the holy grail. In spite of all that, if Graham eventually puts his name to something, I'm sure it will be quite exceptional.
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Older than I once was, younger than I'll be
............................. Andrew |
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morris_minor
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Joined: 27 Mar 2012 Location: Surrey Status: Offline Points: 6017 |
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Posted: 30 Jan 2016 at 5:47pm |
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I remember the smell too, Andrew!
And the issue of tube rolling is akin to cartridge swapping. But I'd be tempted to stick with whatever valves a GSP unit came with. If they're good enough for Graham . . .
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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 2 x Proprius + Spatia/Spatia Links |
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