Pros: Sound quality, form factor, higher power / price
Cons: Power adapter is weak
I didn't expect this little Chines guy to generate impressive sound.
When it is pairing with DT990 - 600 ohm, Cello concerto of Britten superised me of its crisp sound and wide soound stage with enough volume.
In comparison to many times expensive amp unit, I could not pinpoint its weakness against.
I think anyone cannot easily buy this performance per this price or many times more than this.
It is really a small wonder, it constantly reminds me of myths regarding to audiophiles' believe system.
Really an amp is fundamentally basic structure with this relatively small bandwidth of audio signal.
Problenm is naturally in resonance-uncontrallable headphone, not in amp.
This fact makes really a sense in the ultra low priced but wonderful amp.
Why do we spend a big money to a really in biased way?