Show your headphone amplifier

This is what I currently use. It has upgraded tubes.
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I have the same and like it a lot. Goes well with my high-impedence Senn HD 650's. Curious what tubes did you upgrade to? I upgraded mine to some GE 5654W
drivers and Novosibirsk 6H6P power tubes. I think it improved the sound but nothing night and day. I actually thought it sounded quite good with the standard tubes but just wanted to play around with some tube rolling as much as anything. Great product for the price!
 
I got mine for $129 from Amazon. It was too good a deal to pass up. The price has since been raised.

So far I've replaced the input/driver tubes with GE 5654's from Riverstone Audio. The outputs are stock. Do you hear a big difference between the stock output tubes and the Novosibirsk tubes?

My only caveat is that it tends to run somewhat hot.
 
I got mine for $129 from Amazon. It was too good a deal to pass up. The price has since been raised.

So far I've replaced the input/driver tubes with GE 5654's from Riverstone Audio. The outputs are stock. Do you hear a big difference between the stock output tubes and the Novosibirsk tubes?

My only caveat is that it tends to run somewhat hot.
I think 'hot" is normal for a Class A tube amp. Mine gets pretty warm as well but nothing outrageous. I certainly don't think the Novosibirsk tubes made a huge difference and they weren't cheap at around $45 for a matched pair. Admittedly I haven't swapped the stock output tubes back in for any real A/B comparisons. As I'm sure you found rolling the driver tubes is pretty cheap and I'm fairly sure the better bang-for-the buck.
 
Okay it finally came in..
Signed (by the technician whom made it)..

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Upgraded Caps

04E4C973-43F6-4537-AADD-C7326D192A23.jpeg
Paired with,, Headphones,,
ZMF (Auteur)..

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Source is a,,
OPPO 205. (CD/DAC)
Streaming Tidal Hi-Fi via
Apple TV4 (hdmi to oppo 205)
8A4F71E6-CE68-4BF3-870B-7F01DCA42C73.jpeg

Replaced my PRE-AMP in my main system..
WOW , I really like it..
01D7387C-6A3E-47B1-83ED-DA8334403045.jpeg
 
Okay it finally came in..
Signed (by the technician whom made it)..

View attachment 1137535

Upgraded Caps

View attachment 1137534
Paired with,, Headphones,,
ZMF (Auteur)..

View attachment 1137528

Source is a,,
OPPO 205. (CD/DAC)
Streaming Tidal Hi-Fi via
Apple TV4 (hdmi to oppo 205)
View attachment 1137529

Replaced my PRE-AMP in my main system..
WOW , I really like it..
View attachment 1137537

I had a CSP3 for a while driving a pair of DT880-600 phones. It was a very good match up! You need to roll some tubes to find audio nirvana!
 
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Currently running this at the moment:

AMB Beta22 (three channel) Amplifier - amp gain set at 5 (built myself 8 years ago and still running strong)
AMB Sigma22 Power Supply (built myself 8 years ago...)
PS Audio NuWave DAC
Galaxy Note8
(source)
Grado SR325e
Senn HD650
(sometimes)
 
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My LinnenberG Maestro SE headphone amplifier on left, along with its mates, the Allegro monobloc amps. My headphones are currently Sennheiser HD580’s, but I have a pair of HD660S coming, and I have a nice 4-pin balanced cable for them, looking forward to them!
 
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