Vacuum tubes, condensers, and deteriorated parts have been replaced and maintained. Comes with a step-up transformer! A separate amplifier that is still popular even now, 70 years after its release. The thickness, luster, and tension of the sound are all emotionally composed, and perfectly express the sound of the instrument. Anyway, it is a famous machine with thick, firm mid-bass, and a tasteful sound unique to vacuum tubes. There are threads and dirt on the exterior. Serial 44376/14886/11113 (Yonejima Satoshi)
Maintenance information: 2025.10.16 maintained (1/2 W resistor, 3 deterioration replacement) 2025.5.27 maintained ◎ QUAD2 (common) · vacuum tube EF86 defective and deterioration replacement 1 x 2 (2025.4.26 · oil capacitor 0.1 μF deterioration replacement 2 x 2 · electrolytic capacitor 25 μF deterioration replacement x 2 · resistor 3W deterioration replacement 1 x 2 · resistor 3W deterioration replacement 1 x 2 · resistor 3W deterioration replacement 1 x 2 · missing screw on the back of the chassis x 2 ※ SP OUT: 15 Ω wiring
◎ QUAD22 · Balance Volume Defect Replacement · Spark Killer Defect Replacement 2 pieces · AC Code Assy added with our product · Block Capacitor Deterioration → 22 μF Additional Electrolytic Capacitors 3 · Electrolytic Capacitors 25 μF Degradation Exchange 4 · Film Capacitors 0.01 μF Other Deterioration Replacement 12 · Resistors 1W and 1/2W Deterioration Replacements · 8 Resistors Only • Gang Error Reduction Measures → 1/2 W Resistance Added 4 Vacuum Tube Sockets and RCA jack caulk repair
*Operation has also been checked with AC 220V (rated output measured at 15W SP: 16Ω)
Accessories: power cord, step-up transformer
Main specifications: 13W (16Ω) with rated output AC220V [QUAD22] EF86 × 2 ECC83 × 2 input PHONO, RADIO, TAPE W267 × H89 × D148 mm 3.2 kg [QUAD2] KT66 × 4 EF86 × 2 GZ32 15W+15W W321 × H162 × D119 mm 8.2 kg