Nelson Pass PassDIY FirstWatt F5 PowerAmp (Class-A MONSTER, perfect for for K1000, Planar or Orthodynamic headphones or bookshelf speakers)
Will Ship To: Anywhere
I'm selling my FirstWatt F5 power amp. It has served me well these past months but I need to raise cash for another project so it's going up for sale. For the few who haven't seen this amp, here is a great review by 6moons, though there are MANY others.
I've had the pleasure of trying it with a few headphones including the Audeze LCD2 and Hifi-Man HE5-LE, they sound AMAZING. Currently, I'm using it to drive my Harbeth speakers and it's the best I've ever heard them sound (though I only had them running off a few different amps, none in this class).
The amp will push over 25 watts per channel in pure Class-A, more than enough for reasonably efficient bookshelf speakers in a large sized room. Amazing with large single-driver speakers or normal sized bookshelves.
The build is following the specs and suggested parts list by the designer, including the PSU design, with an overspec 400VA transformer and HUGE heatsinks to try to tone down the heat produced by this beast (which is A LOT). The chassis I used is a heavy duty black steel chassis with huge aluminum heatsinks, originally made for Dun Mei Audio (the best chassis I found for a monster amp like this).
Lots of images included, please excuse the quality, there is a bit of dust and my camera is highly reflective, the chassis has only a few noticeable scratches.
Edited by FallenAngel - 8/13/13 at 6:19pm