Pros: Super dynamic and entertaining. Prodigious bass impact.
Cons: It’s very excitable. Treble takes no prisoners.
Firestone Audio BlackKey Quick Review Full Review at http://www.head-fi.org/t/691822/firestone-audio-blackkey-review Thanks to Firestone Audio for the sample. Brief: A dinky, bouncy DAC/Amp to play with. Price: Normally 69 Euro but at present 55 Euro or about £46 Specifications: Size: High 80.15mm x Width 20.4mm x Depth 18.1mm, Frequency response (from 40 Hz to 15 kHz): +0.04dB， -0.32dB, Noise level: -94.0dB, Dynamic range: 93.7 dB, THD %: 0.0070%, Stereo crosstalk: -90.6 dB, Support to 96kHz/24Bit, USB Interface: (A type) to USB Interface, System required: Windows XP/Vista/7, MAC OSX and Linux, Connectivity:...(read more)