Paying tribute to the success of the L 75, Lenco released the Lenco 750. The power amplifier was designed and produced by HEA Vienna with their ST3000i module. It used germanium transistors in the power supply and in the power stage. The small signal part was constructed with silicon transistors. The first series had a socket for a RIAA pre-amplifier who changed later into a on board type that could be switched between crystal and dynamic cartridges.

The Lenco 850 was the version with a built in FM Tuner with 3 pre-sets. The first series of both didn’t have a headphone socket yet.

The L 750 was very popular in Switzerland and the Swiss distributor ExLibris sold it in 1969 with the Lenco 2440 speakers for CHF 1000.— !

In December 1971 it was replaced by the Lenco 900.

Lenco 750 Mk II / L 75

Output power:

Distortion:

S/N ratio:

Frequency response:

Input sensitivity DIN sockets:

2 x 15 W into 4 Ω

< 0.8 %

60 dB

30 Hz - 30’000 Hz ± 1.5 dB

200 mV

HEA St 3000i / 3 amplifier with on board RIAA pre-amplifier from 1969

Lenco used the same amplifier module also in their Stereo 3000 amplifier. In Austria it was sold as HEA Steuergerät 3000.