Klemt Echolette M150 Amplifier

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M70 and M120 onto the market. It was given a fifth output. In the input and summing amplifiers, circuits with ICs and transistors are used instead of tubes, while the phase inverter and output stage still use tubes. There is also a new circuit with 80 wat

Operating voltages: 110, 130, 150, 220. 240, 250 V at 50-60 Hz; power consumption: 280 VA; tubes: 1 x ECC 81, 2 x EL 34; semiconductors: 10 x BC 237 B, 7 x SN 72709, 9 x BY 127, 1 x B 60 C 600; 5 preamplifiers, tone control and driver stage, phase inversion stage, push-pull B-end loop; power: Sine 80 watts, music 100 watts; distortion factor less than 2% at 1000 Hz; frequency range 40 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. 3 mV at 150-500 Ohm, for guitar / bass approx. 15 mV, for echo / reverb recording 11 mV, playback 20 V, for pickup playback 30 mV, recording 25 mV.
(Source: Hans Ohms, Hi-Fi Archive)