My Sound Cube tube power amplifiers

With love from Poland. My Sound Cube nitty, 12W EL84 based tube power amplifiers offers 12 watts of power output and implements 48 steps attenuator to match the gain… 
Mono block vacumm tube power amplifiers Cube
Stepped attenuator: 48 steps
Type:​EL84 PP
Power output: 12W
Imput sensitivity: 1V
Frequensy response: 16Hz-65kHz
THD+N: 0,1% (1W, 1kHz)
TIM: 0,08% (1W,1kHz)
Output impedance: 4 and 8 ohm
Power requirement: AC 230 V, 50 Hz
Weight: 10,5 kg / piece
Dimensions (WxDxH): 205/280/320 mm