• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

High-End Tube preamp with ECC88

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And a CCDA is where they go!

My schematic is not good for your purpose, too little distortion...
We discussed the difference between 6N23П and ECC88 with DF96, it is very esay to adapt a circuit for one or the other.
 
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I have not seen anybody to specify what a Hi-End pre-amplifier is.

I see that such amplifier should have the following characteristics:

- flat and wide frequency response
- high output level
- low distortion
- low output impedance
- low gain, when used as a line stage or with input levels above, say 0.3 Vrms
- non-inverting

Below is one with 6n23p (=ECC88, etc.) that fulfils the above requirements.

An externally hosted image should be here but it was not working when we last tested it.
 
Hi guys!
Here is schematic the true seed High-End preamplifier.
See all the measurements will be clear!
 

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  • High-End Tube Preamplifier with 12AX7.pdf
    High-End Tube Preamplifier with 12AX7.pdf
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  • Mesuarements-S.jpg
    Mesuarements-S.jpg
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No, no, this must be *really* hi-end. It says so right on the schematic.


@Gost22: This, very goodly! Ultimate High End! Sound like true bestest vintage tube! Pure seed!
You go build, come back next year, tell us how sound is!

:hohoho:

Hello Paris (Vincent77)!
I made ​​this tube/valve preamplifier with 12AX7 and to tell you great playing. Giving it the right sound full of warmth, very good, not to say an excellent stereo image, midlle and high i very defined with a lot of heat.
enjoy😉
 
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Hi artesalo!
Who says no R1 to requirements. Who wants THD <0.001 for let pre-amplifier with transistors or MOSFETs that's my recommendation ...
tube/valve pre-amp should produce tube-like sound!!!!
This is the law of tube preamlifier or line-stage!😱🙂
Cheers!:hohoho:
 
Tube preamp should give tube sound? Law of tube preamp to make sound/distortion like a violin found in bottom of a lake somewhere high up in the Alps? That law is exactly what gives tubed electronics a bad rap. I prefer my tube preamps and amplifiers to make no sound except what's fed into it. I'm not going to post Hi-end circuit for you...you wouldn't appreciate it anyway without all that tube sound.

And yes I'm enjoying this thread immensely... :wchair:
 
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