Echolette E 51 Valve Tape Echo

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The Echolette E 51 is the successor to the -S- NG51 Tube Tape Echo, which Klemt sold from 1960 to 1967 as one of the first effects units for music recordings. The E 51 tube device appeared with a new design, but is practically identical in construction. Production was discontinued in 1973, as tube technology had been superseded by semiconductor technology. The E 51 is suitable for combination with the Klemt mixing amplifiers M 70, M 120, M 150, B 150, B 200 and G 200 from the silver series.

Echo reverberation is generated via a DE 299 endless tape loop. Three recording heads, two playback heads and one delete head. The number of echoes is limited to a maximum of ten, the reverberation time to a maximum of 3 seconds.
Operating voltages: 110, 130, 150, 220, 240, 250 V, 50-60 Hz
Power: approx. 45 watts
Tubes: 4 x ECC 83, 1 x ECC 82, 1 x EM 84
Diodes and rectifiers: B 300 C 70, 1 x SFD 108, 2 x BA 170
Frequency: 50 - 12,000 Hz - 3 dB
Inputs: 2 x for low-ear to high-ear microphones or pickups for instruments, 1 x for organ, 1 x for recording signal from M 70 - M 150
Remote switching via foot control
(Source: Hans Ohms)