In 1972 several improvements were made and it was internally renamed as Lenco L 350A Stereo. It got a re-designed front panel, now with a bass and treble potentiometer and all operating elements have moved to the right. It was still built with the B 52 record player, equipped with a Ronette Stereo 107 ceramic cartridge. Between September 1972 and October 1972 a 6.3 mm headphone socket was added. The B 52 got a spring loaded anti skating. With the latest version Lenco used the B 55 with a Ronette Stereo 107 ceramic cartridge. It was distributed in Switzerland by Ex Libris and sold for CHF 280.—.

Lenco 350A MkI front panel

Lenco 350A MkII / B 52 MkIII, now with anti skating and a headphone socket

Output power:

Distortion:

S/N ratio:

Frequency response:

Input sensitivity DIN socket:

2 x 6 W into 4 Ω

< 2.7 % @ 4W

75 dB

40 Hz - 20’000 Hz ± 1 dB

400 mV

Original Lenco 350A MkI operating manual

The PCB and the transformer were manufactured in Lenco’s own factory in Steg*. The photograph shows the MkI version of the L 350A amplifier. The V 425 module is based on the V 220 but with a better stabilized power supply. It is now divided into two parts

*canton Wallis, Switzerland