Part of Kenwood's penultimate high-end set, along the L-1000C preamp, L-1000T tuner and L-1000D CD player - unfortunately all quite bland looking and sloppily designed.
It seems the L-1000 series were export-only and this may explian the limited amount of technical information available and the rather scarce and almost non-descript literature...
But the L-1000M, behind its "melted ice-cream" façade, was technically superlative : fully symmetrical layout, two 270VA transformers, two 47,000µF caps (!), point-to-point wiring, anti-vibration composite materials etc.
Maybe the one Kenny combo to rediscover, besides the very last and over-over-engineered LA-1, L-D1 and LVD-Z1 series.