Autonomous amplifier for hotel rooms. Power supply 230 V AC / 50 Hz, from circuit breaker. Power output 3.5 W / 16 ohm, 5 W / 8 ohm. TDH <0.3% (1.5 W). Input range -10 dBu (250 mV RMS/700 Vpp) to +7 dBu (1.8 V RMS / 5 Vpp). Impedance more than 22 kohm input. Input level +6 dBu / 1,300 ohm (4.4 Vpp). It can receive an audio signal with priority fron public address system. Terminal connections (power supply, volume control and speakers). Includes 2m cable for signal input from TV SCART and minijack. Dimensions 143,5 x80 mm front panel. Model 2653AS of IMPROVE (OPTIMUS).