Pros: Excellent Bass, Easy to Use, Minimal Hiss/Interference
Cons: Edit: A little hard to tell where the battery life is, although it lasts forever.
First and foremost, let me say that Gary (the owner of Electric-Avenues) is seriously the friendliest, most helpful guy I have spoken to in a long while. He was so helpful throughout the question/ordering process. He made sure to answer every question I had very quickly, and even preset the gain on this amp for my Grado SR-80s (great pairing, btw). As for the sound quality, I can not describe it as well as others who have reviewed this amp here, but I can second everything they have said. This amp does an amazing job of bringing out the detail and resolution in music; I have listened to classical, jazz, techno, vocal, and it has performed quite well with each (through SR-80s AND ATH-M50s). I encourage you to read through these reviews of the PA2V2, and if you have any questions whatsoever, just email Gary! Overall, this is a great amp, and, at $70, you can't beat it.