Echolette M120 Amplifier

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The M120 amplifier corresponds to the M80 in a new housing. The four sound controls for the outputs have been moved to the front. The M120 was designed in combination with the LE 4 speakers and the Echo E 51. 

Operating voltages: 110, 130, 150, 220. 240, 250 V at 50-60 Hz; power consumption: 180 VA; tubes: 5 x ECC 808, 2 x EL 503; semiconductors: 5 x ESK 1/10 (B 680); 4 preamplifiers, tone control and driver stage, phase inversion stage, push-pull B-end loop; power: sine 50 watts, music 65 watts; distortion factor 5% at 1000 Hz; frequency range 50 Hz - 15 kHz +- 1 dB; 4 inputs for treble -15 dB at 6 kHz, bass -10 dB at 100 Hz, treble +- 15 dB at 6 kHz, bass +- 15 dB at 100 Hz; input sensitivity for microphone approx. 1 mV at 150-500 Ohm, for guitar / bass approx. 15 mV, for echo / reverb recording 30 mV, playback 1 V, for pickup playback 100 mV, recording 3 mV.
(Source: Hans Ohms, Hi-Fi Archive)