The Torpedo Parafeed Headphone Amplifier

HiGHFLYiN9s · 3rd February 2012, 04:17 PM

Doug (Dsavitsk) of ECP Audio and Tom (TomB) of Beezar put in quite a few hours over the past few years to bring us the Torpedo headphone amplifier. The Torpedo is a parafeed headphone amplifier on a PCB... a very long PCB, and runs on 7-pin 6J6 tubes which typically run only a couple of dollars a pop. The total build cost is very minimal, at about $300 case included if one sticks to the BoM.

This is the short kit being sold at Beezar.com

I made a few slight changes, but my build is mostly stock. Some changes were Kiwame / Koa resistors, a gold plated Neutrik jack, EAR feet, standard RCAs, ClarityCap ESAs for parafeed duty, a little make-shift stand to get the tubes up and out of the chassis and a fancy powdercoat job.

It was a fun little project and sounds great! There are plenty more details about the build here if you want to dive in.

dirkwright · 3rd February 2012, 04:20 PM

I like it! very old school looking. Cool name also.

Cassiel · 4th February 2012, 01:34 AM

Love it!

denny9167 · 4th February 2012, 01:35 AM

Quote:

Originally Posted by HiGHFLYiN9s

Doug (Dsavitsk) of ECP Audio and Tom (TomB) of Beezar put in quite a few hours over the past few years to bring us the Torpedo headphone amplifier. The Torpedo is a parafeed headphone amplifier on a PCB... a very long PCB, and runs on 7-pin 6J6 tubes which typically run only a couple of dollars a pop. The total build cost is very minimal, at about $300 case included if one sticks to the BoM.

This is the short kit being sold at Beezar.com

I made a few slight changes, but my build is mostly stock. Some changes were Kiwame / Koa resistors, a gold plated Neutrik jack, EAR feet, standard RCAs, ClarityCap ESAs for parafeed duty, a little make-shift stand to get the tubes up and out of the chassis and a fancy powdercoat job.

It was a fun little project and sounds great! There are plenty more details about the build here if you want to dive in.

Smooth!!!!!!!!!!!!!!!!!

Cassiel · 5th February 2012, 02:28 AM

Quote:

Doug (Dsavitsk) of ECP Audio

I see he has gone commercial ........ oops his schematics are starting to miss details (

).... I see competitive prices there too (

). Tsk tsk.

ramsfan6239 · 29th May 2012, 06:48 PM

How does it sound?

HiGHFLYiN9s · 08:47 PM

Overall very good, leaning toward the warm side. I'd say it's the best sounding HP amp I've heard in its price range if my audio memory serves me correctly. I found the sound signature to be notably more agreeable than the Mini-Max, which sounds neutral but is less engaging. There has been talk of a newer version (of the Torpedo) using a different power transformer to eliminate the last little bit of magnetic coupling, but in my opinion that was a non-issue.

Quote:

Originally Posted by Cassiel

I see he has gone commercial ........

Haha, yes he did. The L-2 headphone amp looks quite impressive and is filled with nice quality parts: http://www.innerfidelity.com/content...hone-amplifier

6J6 · 30th May 2012, 12:46 PM

Nice work, and it uses my favourite valve too!

Dislike the silicon in the signal path though, just personal preference.

And dig that case... Wow it's enormous!

Redwingnine · 27th October 2012, 04:08 PM

I just got one of these, and it sounds great. I had a PS Audio CGHA, and this sounds quite a bit better, no question. I upgraded the caps to clarity caps, and that does help.

A great unit, especially at it's price point.

3rd February 2012, 04:17 PM	#1
HiGHFLYiN9s diyAudio Member Join Date: Jun 2010 Location: East Coast, USA	The Torpedo Parafeed Headphone Amplifier Doug (Dsavitsk) of ECP Audio and Tom (TomB) of Beezar put in quite a few hours over the past few years to bring us the Torpedo headphone amplifier. The Torpedo is a parafeed headphone amplifier on a PCB... a very long PCB, and runs on 7-pin 6J6 tubes which typically run only a couple of dollars a pop. The total build cost is very minimal, at about $300 case included if one sticks to the BoM. This is the short kit being sold at Beezar.com I made a few slight changes, but my build is mostly stock. Some changes were Kiwame / Koa resistors, a gold plated Neutrik jack, EAR feet, standard RCAs, ClarityCap ESAs for parafeed duty, a little make-shift stand to get the tubes up and out of the chassis and a fancy powdercoat job. It was a fun little project and sounds great! There are plenty more details about the build here if you want to dive in. __________________ My DIY Electronics Blog: DIYAudioBlog.com

4th February 2012, 01:34 AM	#3
Cassiel diyAudio Member Join Date: Sep 2004 Location: Madrid	Love it! __________________ Hello

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3rd February 2012, 04:20 PM	#2
dirkwright diyAudio Member Join Date: May 2011 Location: Virginia	I like it! very old school looking. Cool name also.

29th May 2012, 06:48 PM	#6
ramsfan6239 diyAudio Member Join Date: Nov 2011	How does it sound?

30th May 2012, 12:46 PM	#8
6J6 diyAudio Member Join Date: Feb 2012	Nice work, and it uses my favourite valve too! Dislike the silicon in the signal path though, just personal preference. And dig that case... Wow it's enormous!

27th October 2012, 04:08 PM	#9
Redwingnine diyAudio Member Join Date: Apr 2010	I just got one of these, and it sounds great. I had a PS Audio CGHA, and this sounds quite a bit better, no question. I upgraded the caps to clarity caps, and that does help. A great unit, especially at it's price point.