Extra-extra-rare tube amplifier launched spot-on during the Alpine sale.
The MQ-40 is... read the USER description below - it has everything in detail as printed in the dedicated summer of 1983 export (or japanese) catalog.
Due to the sale, japanese T-Tag was only very briefly LUX, then, of course, Alpine.
The LUX / Alpine sale prevented proper distribution as well and that is why the three 360s equivalents quickly came in (CL-360, MQ-360 and LX-360 integrated) to remain available during a much longer (but mostly export) time.
Along with its CL-40 mate, the MQ-50 received a Stereo Sound Best Product distinction (so did the 360s) and, like the contemporary LX38u, this 40/50 combo made the last of the classic and independent LUX, as featured in the third and last Luxmanism booklet, printed december 1983.
End of an era.
A Lux MQ-50 here and an Alpine MQ-50 here.