The Torpedo Parafeed Headphone Amplifier - diyAudio
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Old 3rd February 2012, 04:17 PM   #1
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Default 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
Click the image to open in full size.

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.

Click the image to open in full size.

Click the image to open in full size.

It was a fun little project and sounds great! There are plenty more details about the build here if you want to dive in.
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Old 3rd February 2012, 04:20 PM   #2
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I like it! very old school looking. Cool name also.
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Old 4th February 2012, 01:34 AM   #3
Cassiel is offline Cassiel  Libya
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Love it!
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Old 4th February 2012, 01:35 AM   #4
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Quote:
Originally Posted by HiGHFLYiN9s View Post
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
Click the image to open in full size.

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.

Click the image to open in full size.

Click the image to open in full size.

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!!!!!!!!!!!!!!!!!
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Old 5th February 2012, 02:28 AM   #5
Cassiel is offline Cassiel  Libya
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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.
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Old 29th May 2012, 06:48 PM   #6
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How does it sound?
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Old 29th May 2012, 08:44 PM   #7
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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:
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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
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Last edited by HiGHFLYiN9s; 29th May 2012 at 08:47 PM.
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Old 30th May 2012, 12:46 PM   #8
6J6 is offline 6J6  Australia
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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!
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Old 27th October 2012, 04:08 PM   #9
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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.
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