Luxman T-50A

One of the few units which managed to blend properly sobriety in design and the ever more present little push-buttons.
The T-50A is however more modern on the inside than the warm wood-enclosure would lead to believe.

To avoid frequency locking drift, a feedback loop following the crystal-controlled frequency of the tuned-in station : the entire tuning circuit is synchronized at the precise tuning point with the AccuLock system which detects an exact center tuning point, which in turn uses a control voltage at the CLL circuit to trigger mechanical locking of the tuning knob.....at the center tune point.

Dual-gate Mos-Fets, 5-gang varicap with AGC circuit for the front-end.
Quadrature IC, detector transformer and bandwidth selector for the IF stage.
Phase Locked Loop ICs with 3-pole low-pass filters in each channel for the MPX section.
Op'amp ICs lower output impedance to 100 Ohm.


Given Luxman's complex rebadge / rename / relook schemes there probably were a few "equivalent" units : apparently (you never really know with Luxman) the T-50A was related to the T-12 and T-4... the former being also a T-300X.
But the T-50A had something that was quickly becoming quite a rarity when it was produced : well balanced looks.

Like most of Luxman's late 1970s tuners, the 50A was built by SONIC.

Do read the extremly interesting review of the T-50A and of Luxman tuners and their multiple incomprehensible "versions" right here.