I just purchased some Beyer DT-990 600Ohm headphones and had intended to use them with my AV receiver. I wasn't satisfied with the sound from the headphone jack of the receiver. Something is causing it to emit a hiss and I found the sound quality was better out of my USB sound card at my computer.
Today I went to a local headphone shop and tried a bunch of headphone amps with the DT-990. I sampled the Musical Fidelity V-CAN, Meier Corda Swing, one made by Oak (chinese brand) and some other ones. With the exception of the Oak and V-CAN most amps were't driving the headphones too well. I had to crank the volume way up on my Sansa Fuze and on the amp. I liked the sound quality and price of the V-CAN the most and bought it. I have it hooked up to my av receiver via Tape out and my DT-990s sound really good to me now.
One thing I don't really like about it is the lack of a power switch.
Anyone else using this amp? It seems quite good to me for the price.