Bravo AUDIO V2 Valve Class A Tube Headphone Amplifier pre 12AU7 TUBE
In Put Power: DC24VInput Sensitivity: 100mVInput Impedance: 100KOhmOut-Put Impedance: 20~600 OhmGain: 30dBFrequency response: 10Hz-60KHz +/- 0.25dBSignal/Noise Ratio: >90dBDynamic range: 84.6dBA(300 ohm) 89.8dBA(33 ohm)THD: 0.016%(300 ohm) 0.45%(33 ohm)IMD + Noise: 0.045(300 ohm) 0.42(33ohm)Dimension:79mm (D) X 79mm (W) X 44mm (H)not measure to tube and transformerShipping Weight: 600 g