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[Triodethom]

Originally Posted by stenak

Please, post the schematic!
Merry christmas to all you DIY,er....
Here in Norway we have 8 degrees below zero(celsius), and snow.....

Here it 14 c foggy and a Merry Christmas to you.

[yagoolar]

Originally Posted by fotios

Three stage, 300B/c parallel single ended - no feedback - monoblock 22 Watt RMS power amplifier with DC stabilized tube heaters. Output hum/buzz noise -64dBV/100Hz max (measured with the FFT analyzer of my very strict Hameg DSO, so hope is enough!) at 4Ω load with or without shorted input.

Nice one! Congrats.

[Reegal]

Here my last creation, 300B psvane in s.e.
Tubes power supply with 3B28 , hand made transformers including the output transformers. Vu meter made with EM83
Cabinet is made in solid walnut musical instruments wood and the top is made in ragged marbled wood with teak inserts, all are machined with CNC milling machine.
Marry Christmas

[M Gregg]

Reegal,

I always find your amps an inspiration. The wood work and layout is always exceptional..well done as usual..

Regards
M. Gregg

[Gost22]

Originally Posted by stenak

Please, post the schematic!
Merry christmas to all you DIY,er....
Here in Norway we have 8 degrees below zero(celsius), and snow.....

Hi
Here is the schematic-create preamp and enjoy his sound!
Cheers!

[Gost22]

Originally Posted by mhouston

Here is my third build of the Super Simple Single Stage tube preamp: 4S The Black. This is based on a 12AU7 Silver Dragon. Much modified values and slightly modified schematic. 24VAC wall wart runs a tranni backwards inside to produce 280VDC. Solen output caps. All component-2-component wiring and DC heaters. No hook-up wire in amp section. Silver solder and Alps blue velvet pot on the output.

The best sounding so far. One more differeent one to make which will support with no modification all 12Axx tubes - true plug and play.

Hi mhouston!
Please show the schematic to preamp 4S with tube/valve 12AU7 (ECC82) .
thank you!

[mhouston]

Originally Posted by Gost22

Hi mhouston!
Please show the schematic to preamp 4S with tube/valve 12AU7 (ECC82) .
thank you!

4S Universal:

[Robert Kesh]

I got the B+ and the heater supply mixed up.

[mhouston]

Originally Posted by Gost22

Hi mhouston!
Please show the schematic to preamp 4S with tube/valve 12AU7 (ECC82) .
thank you!

Gost22 This is not the "Black" schematic. If you want that I will post it too. They are slightly different.

[Reegal]

Originally Posted by M Gregg

Reegal,

I always find your amps an inspiration. The wood work and layout is always exceptional..well done as usual..

Regards
M. Gregg

Thank you Gregg,
I love tubes and wood and I always try to do my best to match them with my ideas.
Next will be an amplifier with 205 tubes.
All the best
Guido