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Best Valve pre-amp match for ME 550 amp
Best Valve pre-amp match for ME 550 amp
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Old 28th January 2013, 01:01 AM   #161
TigerScent is offline TigerScent  Australia
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PVanes are rather expensive; I was looking for low-cost : gr8 sounding valves ...
 
Old 28th January 2013, 01:02 AM   #162
TigerScent is offline TigerScent  Australia
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Zaph : I feel somewhat flummoxed that there is no further response regarding the auditioning of the ME25 from you re: your offer, since I accepted it. Have you had a change of mind?
 
Old 28th January 2013, 11:51 PM   #163
Zaphod Beeblebrox is offline Zaphod Beeblebrox  Australia
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No. The offer remains. I need to locate a suitable packing box, measure, weigh and calculate postage. I will do so when I have the time.
 
Old 29th January 2013, 02:18 AM   #164
TigerScent is offline TigerScent  Australia
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Oh good - fabulous - I will be able to compare and contrast to what I have to date tried - I look forward to it ....
 
Old 1st March 2013, 10:15 AM   #165
MrRogers is online now MrRogers  Australia
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What's the latest news, tiger?
 
Old 13th March 2013, 08:37 AM   #166
TigerScent is offline TigerScent  Australia
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Im looking at the basic shuangang cryogenic for value for money for the valve preamp...

...in addition, an old schoolchum who is now an electronics engineer I briefly spoke to, suggested that I use a SS buffer with the valve preamp to bring down the impedence without compromising the upper end, as using transformers would typically do...., a helpful well-meening chap; I need to discuss this with him in a bit more detail...

Last edited by TigerScent; 13th March 2013 at 08:44 AM.
 
Old 6th May 2013, 08:06 AM   #167
thoglette is offline thoglette  Australia
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Quote:
Originally Posted by TigerScent View Post
......., a helpful well-meening chap; I need to discuss this with him in a bit more detail...
Like exactly what is the point?

If you are happy with sound of silicon why bother with a valve?

Either get a decent transformer (eg. Sowter or Lundhal etc) or spend similar money building a quiet power supply for your op-amps.

Or go the Nelson Pass route and use a pair of matched transistors.

(either of the silcon options will be better with battery power supply as long as you don't mind recharging batteries).
 
Old 6th May 2013, 08:29 AM   #168
MrRogers is online now MrRogers  Australia
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That's too easy.

There needs to be a challenge, for an audiophile.
 
Old 5th October 2013, 10:58 AM   #169
TigerScent is offline TigerScent  Australia
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I was quite amazed at the sound the simple $50 Guanzo preamp buffer produced via the ME550...; so who can say how much better a more esoteric preamp might sound. The Russian tubes got me, I must say, for the price to quality ratio they are just brilliant...
 
Old 5th October 2013, 03:32 PM   #170
ChrisA is offline ChrisA  United States
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Distortion is a byproduct of gain. So you'd expect a unity gain buffer to sound good. The only thing that could beat it would be a "passive preamp" (basically a wire in a box.)

The buffer can do some impedance matching but this tread is way to long to know what you have on both sides of the buffer amp

Have you done any blind testing? It's hard because you need some way to flip a switch and bypass the buffer amp and not change the volume in the process. And of course you need an assistant to flip a coin and then hit the bypass or not. (the switch needs to be silent too, so yo can't hear if the assistant changed the setup.)

But there is no need to assume price determines quality in a small tube buffer amp. The parts are dirt cheap, A $9 tube and a few cents for passive parts is all you need UNLESS you need balanced outputs then you are into $100+ (each) for a decent transformer.

I just bought what turned out to be a pretty good microphone preamp for $29. Proof that you don't have to spend a fortune. This one even has regulated DC heater and a better mechanical design (without an exposed glass tube) You don't need one of these but as an example see the link:
ART-Tube-Studio-Mic-Preamp


I've recently gotten into building studio gear and of course the signal paths are all balanced, I have a goal to learn how to build my own transformers.

Last edited by ChrisA; 5th October 2013 at 03:36 PM.
 

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