Detailed maintenance has been carried out, from wood case exterior maintenance to switch and volume disassembly contact polishing! This pre-main amplifier was announced as a successor to the SQ505. The lax sound of yesteryear has been inherited, and you can feel the nuance of warm vacuum tubes. The output is modest at 35W, but I feel that it is more powerful than the numerical value. Combinations such as JBL L26 are recommended (Murakoshi Yoichi)
Maintenance information: 2025.12.23 wood case maintained (exterior repair/coloring) 2025.12.3 maintained (switch and volume disassembly contact polishing. Replaced 6 transistors in the equalizer circuit. Replace 4 transistors and 4 capacitors in the protection circuit. 8 transistors in the tone circuit were replaced. Replace the power lamp. I/O pin jack polish Electric circuit DC adjustment, idling current adjustment)
Accessories: Power cable instruction manual (copy)
Main specifications: output 35W+35W (8Ω) PHONOM2 system Recout 2 system dimensions W450 x H160 x D268 mm weight 10 kg