DSHA-2 Headphone Amplifier

The DSHA-2 Headphone amp is almost ready for production, so I thought I'd post a few pictures.

Apsara Amplifier

All of these little stories seem to be the same – I tried to build some circuit, it went badly, and them some little change made it great. This one is no different.

The Caged Frog II-- A Pentode Based Differential Transconductance Amplifier for Headphones

Caged Frog ][

I really like transconductance amps for driving headphones. The first one I built, the Caged Frog, has remained a favorite of mine. Even the Baby Frog is great for what it is. But, since I have a definite preference these days for differential amps, the next obvious thing to do was make a differential gm amp.