ST560 amplifier card, 60 W 24 Vdc, input for balanced or unbalanced active signals (12Vpp). 

Features:

• Output power: 60 W into 4 ohms (32 W into 8 ohms).
• high efficiency class D
• 60-20 W power selector
• maximum audio signal input 12 Vpp
• total harmonic distortion less than 0.1% at 1 kHz, 60 W, 4 ohms.
• frequency response 25 Hz to 20 kHz
• Input impedance: 12 kohm (unbalanced), 24 kohm (balanced). 

Weight: 25 g

Power supply: 12 - 26 Vdc stabilised

NOTES: for 4-8 ohm speakers