FS: Custom 6P1P Amplifier

sorenj07 · 2nd November 2009, 08:13 PM

Completely hand-built by myself, mostly my design (with much help from people on this and other forums). Meticulous point to point wiring. Impeccable sound, absolutely zero hum, noise, or buzz. Black background no matter what position the volume knob. 10M45S constant current sources for each tube. Using the highly regarded Z565 output transformers, an Alps Blue Velvet potentiometer, and lab-grade shielded signal cable. Tube complements are a 5V4 rectifier (5AR4 can be used also), military-grade 5965 dual triodes for the input/phase splitter
stage, and military-grade 6P1P-EV tubes. I'll include a spare quad of these.

You get what you pay for. This is probably my 8th amplifier and I have yet to disappoint given the price I charge.

$450 shipped, price negotiable.

pjanda1 · 3rd November 2009, 05:12 AM

I really enjoy seeing your amps. I hope you don't have to negotiate much, $450 seems like a steal! Makes a fella' question whether it is worth it to build their own! Did you build that chassis? That is a mighty looking choke. Is this one choke input (I remember you doing choke input in the past)? Nice work, and good luck with the sale.

Paul
Wild Burro Audio Labs - DIY Full Range Speakers

sorenj07 · 3rd November 2009, 05:42 AM

I used a Hammond aluminum project box with custom wood (forget which kind) oiled in 3 coats and sealed with urethane. There is a considerable aluminum bar running horizontally for structural support, to which the 10M45S constant current sources are bolted. The black metal grills which permit ventilation of the power tubes were cut from ATX computer power supplies, sanded, painted, and then bolted.

Once I get this amp back (lending it to a friend), I will post wiring shots

sorenj07 · 13th December 2009, 10:17 PM

Some pics taken by my friend:

Still available..

MellowTone · 17th December 2009, 04:49 AM

If you were in Australia, I would almost definitely take that. Alas, shipping is a rather sizable kick in the teeth! Bump for an excellent deal.

sorenj07 · 17th December 2009, 07:14 PM

Hah thanks. That is very true. I wonder if it would be more than to Hawaii? I once packed up and shipped a SET amp to a client in Honolulu for between $50 and $60, which wasn't too unreasonable all things considered. Needless to say, the amp made it unscathed

sorenj07 · 4th March 2010, 05:30 PM

Bump! Still available.

anonymouse · 6th March 2010, 02:18 AM

What is the wattage or this unit? Is it common ground? Where are you located?

sorenj07 · 7th March 2010, 11:36 PM

Hi, the amp is about 12 watts per channel. What do you mean by common ground? It has a grounded 3-prong IEC socket. The signal ground, PSU and chassis all connect to the main ground of this socket. I've never had problems with hum with this amplifier.

Currently I'm in upstate New York.

sorenj07 · 17th May 2010, 10:32 AM

bump..

2nd November 2009, 08:13 PM	#1
sorenj07 diyAudio Member Join Date: May 2006	FS: Custom 6P1P Amplifier Completely hand-built by myself, mostly my design (with much help from people on this and other forums). Meticulous point to point wiring. Impeccable sound, absolutely zero hum, noise, or buzz. Black background no matter what position the volume knob. 10M45S constant current sources for each tube. Using the highly regarded Z565 output transformers, an Alps Blue Velvet potentiometer, and lab-grade shielded signal cable. Tube complements are a 5V4 rectifier (5AR4 can be used also), military-grade 5965 dual triodes for the input/phase splitter stage, and military-grade 6P1P-EV tubes. I'll include a spare quad of these. You get what you pay for. This is probably my 8th amplifier and I have yet to disappoint given the price I charge. $450 shipped, price negotiable.

17th December 2009, 04:49 AM	#5
MellowTone diyAudio Member Join Date: Jun 2006	If you were in Australia, I would almost definitely take that. Alas, shipping is a rather sizable kick in the teeth! Bump for an excellent deal. __________________ I Reject Your Reality And Substitute My Own - Adam Savage, Mythbuster

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3rd November 2009, 05:12 AM	#2
pjanda1 diyAudio Member Join Date: Jan 2005 Location: The Nebraska Panhandle	I really enjoy seeing your amps. I hope you don't have to negotiate much, $450 seems like a steal! Makes a fella' question whether it is worth it to build their own! Did you build that chassis? That is a mighty looking choke. Is this one choke input (I remember you doing choke input in the past)? Nice work, and good luck with the sale. Paul Wild Burro Audio Labs - DIY Full Range Speakers

3rd November 2009, 05:42 AM	#3
sorenj07 diyAudio Member Join Date: May 2006	I used a Hammond aluminum project box with custom wood (forget which kind) oiled in 3 coats and sealed with urethane. There is a considerable aluminum bar running horizontally for structural support, to which the 10M45S constant current sources are bolted. The black metal grills which permit ventilation of the power tubes were cut from ATX computer power supplies, sanded, painted, and then bolted. Once I get this amp back (lending it to a friend), I will post wiring shots

13th December 2009, 10:17 PM	#4
sorenj07 diyAudio Member Join Date: May 2006	Some pics taken by my friend: Still available..

17th December 2009, 07:14 PM	#6
sorenj07 diyAudio Member Join Date: May 2006	Hah thanks. That is very true. I wonder if it would be more than to Hawaii? I once packed up and shipped a SET amp to a client in Honolulu for between $50 and $60, which wasn't too unreasonable all things considered. Needless to say, the amp made it unscathed

4th March 2010, 05:30 PM	#7
sorenj07 diyAudio Member Join Date: May 2006	Bump! Still available.

6th March 2010, 02:18 AM	#8
anonymouse diyAudio Member Join Date: Oct 2005	What is the wattage or this unit? Is it common ground? Where are you located?

7th March 2010, 11:36 PM	#9
sorenj07 diyAudio Member Join Date: May 2006	Hi, the amp is about 12 watts per channel. What do you mean by common ground? It has a grounded 3-prong IEC socket. The signal ground, PSU and chassis all connect to the main ground of this socket. I've never had problems with hum with this amplifier. Currently I'm in upstate New York.

17th May 2010, 10:32 AM	#10
sorenj07 diyAudio Member Join Date: May 2006	bump..

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