The ultimate headphone amp – Part 1

By jason, June 12, 2009 on 9:34 pm | In projects | No Comments

I sold my other headphone amp in order to fund building the ultimate headphone amp. It’s just the big brother of the first one. The main difference is that it is a 4 channel balanced amp with dual power supplies. Also, instead of a cookie tin, this time I’m putting it into a real enclosure. So far, I’ve just stuffed the boards and have gotten some of the case work and wiring done.

One of the powersupplies ready to go.
sigma 22 PSU

Front panel of the power supply. The power button has a cool LED ring.
sigma 22 front panel

Rear panel of the power supply. Check out the massive 8 conductor power cord.
sigma 22 back panel

The four channels and the joshua tree stepped attenuator ready to be wired up.
balanced beta in progress

The front and rear panels of the amplifier. I kinda screwed up a couple of the holes… I measured the wrong part for the wrong hole. Oh well, at least it’s a very precise screwed up hole thanks to my new milling machine!
balanced beta front and rear panels

Here’s another project that’s in the works:
wooden enclosure for someTBD project

It’s a poplar enclosure for a TBD audio project. Originally, I had made the miter cuts with my compound miter saw, but they were woefully imprecise and would not allow a tight joint. That, plus the fact that the other projects in the queue involve some shelf and cabinet making, convinced me to invest in a table saw (the big honking tool that the wood is sitting on.) So rest assured, more project posts are forthcoming!

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