Headphone Amp Photo Gallery

[Pars]

Here are a couple of mine, both Kevin Gilmore designs.

A Gilmore DynaFET (FET version of DynaHi), internal.


Mini Dynalo, mostly SMD, runs hot.

 

[Ciro82]

My small Class AB fully integrated (OPamp + power stage)

 

[havun]

All my projects are in this state. Here's a mini-zen ...

Similarly, a voltage amplifier for electrostatic headphones:

 

[Julian RO]

PIO Capacitors...

 

[havun]

Yeah, military grade.
But yes, of all the amplifiers, it can withstand 24/360 operation.
During this time, two Stax amplifiers have already failed.

 

[adason]

Some of my headphone amps, acp+, whammy, lehmann, and others.

 

[jasonRF]

Here is a portable unit with 3 Meier cross-feed levels. I used SMD cross-feed components on the backside of the board near the DP4T switch. The buffer is a JFET-input CFP.

After using this for awhile I've learned that I don't need 3 crossfeed levels - just a high and a low would be fine for me.

jason

 

[passive420]

@Pars you old devil! Showing off that Gilmore kit. That DynaFet is very rare beast, if you say it's his best, I'll believe you. I looked into building the balanced boards and the obsolete Fets would cost £300 alone, not even closely matched.

Got my balanced CFA2 (4 boards), and SMD Dynalo. Got boards and parts for the CFA3 balanced but not for now. Building DACs now...



Also have a Mini, so cute. Wish I had the case like yours, will likely get some end panels done for an existing case.

 

[Pars]

I would actually say that the CFA2/3 are his best sounding amps. I had built a 2ch CFA2, which was pretty close to the DynaFET (which is also 2 ch unbalanced), but the balanced CFA3 probably sounds a bit better. My phones are modified Fostex TR50P or Dan Clark Ether C Flow planars, which take some power to sound their best.

That is an interesting 4-pin XLR jack in your last photo. What is it?

 

[passive420]

@Pars - Lemo connectors, from AliExpress. Really nice connectors, very recommended. Size 1B or 2B 4 pins is perfect for the front - locking, pull sleeve to release



These are plug and socket sets - https://www.aliexpress.com/item/100....order_list.order_list_main.29.296e1802CBE8X1

In this pic you can see two 3B Lemo connectors from DAC to Dynalo and 2B for headphone connector. Mogami quad Microphone cable.