Oh my… To be honest, I was a bit skeptical about all these audio hypes on head-fi.org and several other online forums. To keep this short, the amp is fabulous, it’s quiet even with my not-so-good source, an iPod Classic 120GB. I’m still waiting for my HeadAmp Pico Amp/DAC to arrive any day now.
Aside from its’ rugged and beautiful appearance, the amp seems to be producing much better SQ, bigger soundstage than an ordinary iPod (paired with the superb Sennheiser HD650 headphones). I can hear more instruments separations, more details coming from the phones, treble, bass, everything seem to be well controlled. I never thought an (headphone) amp would actually improve the SQ this much. I’m now one happy camper. 😀
While it is very well made on the inside, the exterior does not match the superb craftsmanship on the inside. There are misalignments here and there. Full aluminum chassis does not mean it’s very well made. There are also a few tiny nicks. I wish they could put more attention to the chassis work, but for the price, I won’t complaint. 🙂
I use the beautiful Sophia Princess 274B Mesh as the rectifier tube and RCA 6DE7 as the drive/power tubes. My WA6 has V-Cap coupling caps and Black Gate voltage filter caps. I don’t know if those caps improve the SQ as I have not heard the standard WA6. I like the feel of the volume knob and the ability to use full range of the potentiometer.
So, there you go, superb amp for the money. It is beautiful, rugged and fairly well made.