Specification: Output Power: 25W. Frequency Response: 13Hz to 38KHz. SNR: more than or equal to 85dB. Output Impedance: 4ohm, 8ohm, 16ohm. THD: 0.15%. Power Consumption: 180W. Vacuum Tube: 4 x KT88, 2 x 2AU7, 2 x 5Z4P. Dimension: 340 x 340 x 240 mm. Weight: 18.00kgs