Power Output: 4W. Frequency Response: 13Hz to 38KHz. SNR: more than or equal to 85dB. Output Impedance: 4ohm, 8ohm. Total Harmonic Distortion: 0.3%. Consumption Power: 100W. Vacuum Tube: 2 x 2A3, 2 x 12AU7. Dimension: 295 x 230 x 203 mm. Weight: 11.00kgs