Thanks for starting this thread. I have always wondered what having more than two tubes in a line stage accomplishes but never got around to asking.
When I mention two tubes, I am assuming the preamp does not use a tube rectifier.
Tube Preamp: How many tubes does it take to .................
My McIntosh Tube Tuner/Preamp has 17 tubes (some for tuner of course).
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This EAR 802 Tube Preamp has 14 tubes (and either MM or MC phono)
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Some have as few as 2 and no mention of Hybrid
Some call themselves Hybrid
What _____________________________?
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McIntosh C220, with remote, with phono, total 4 tubes ’cool tube glow' out the top seems to be it’s claim to fame
http://www.berners.ch/McIntosh/Downloads/C220_own.pdf
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One major differentiator is if tubes are used for just the preamp or also for the power supply. Lots of preamps, used to only use them for the amplifier section. Over the last decades there has been a movement to use tubes for both. So my Audio research preamp and phono stage (very similar topology and function) use 8. Two for power supply regulation.
How many? Well, I guess the designer decides, and that I am sure depends on the sound quality he is going for. |
- 38 posts total