Maintenance has been completed for switches, volume disassembly, contact polishing, replacement of deteriorated parts, etc. A premain amplifier that is an improved version of the L-507. It is an amplifier with an impressive thickness in the mid-range. I think it can handle a wide range of sounds. You can see a feeling of use, such as appearance, dullness, abrasions, etc. (Kobayashi Hitoshi)
Maintenance information: 2025.12.28 maintained (switch, volume disassembly contact polishing, input/output pin jack polish, output relay contact defect replacement, main amplifier idling current adjustment volume exchange, 7 transistors in the protection circuit, 2 resistors replaced)
Accessories: copy of instruction manual
Main specifications: 55W+55W (8Ω) W450 × H164 × D310 mm 11.4 kg