For the electronics enthusiast a tube audio amplifier makes for an interesting ... Electrically it’s a relatively conventional single-ended design using a double triode and a power pentode ...

The circuit is a pretty conventional single-ended one with a two stage double triode preamp and a single power output tube. The transformers are usually the difficult part of a build like this one ...

So, to start, let’s begin with the question many of you may have: just what is a headphone amplifier ... along on the Tube. Fancy pocketing a Balanced & Single-ended mini DAC and amp for ...