"The DragonFly Cobalt is a 'piece-of-mind' product. Especially after its price drop you cannot go wrong as it offers the best compromise between sound quality, amplification, and power consumption. Its value is mainly defined by sound quality combined with its long-term usability (without consumable built-in battery).
Quite frankly, I had not expected the DragonFly Cobalt to sound this good. Considering its qualities, the Cobalt is my new standard for miniature portable dac/amps."