Sony PHA-3 balanced portable dac/amp - Head-Fi.org - Headphone forums and reviews for audiophiles
Model Name PHA-3AC Frequency range 10 Hz – 100 kHz (AUDIO IN input) Distortion 0.01 % or less (1 kHz) Supported impedance 8 Ω - 600 Ω Maximum input 2V rms (AUDIO IN) Maximum output (when using the built-in lithium-ion rechargeable battery) Balanced ......