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AR-425+モノラルプリアンプU.S.A

Manufacture:Stromberg Carlson
Price: JPY 90,727 Sold Out
23-89023-14682-00
U.S.A
Shop: Osu shop
Arrival: 2023-07-16 20:09:32
Disposal prices have been reduced. Member prices are not applicable. 2023/7/16 sales price 178,000 yen Maintained in March 2023. Mono preamp+power amplifier. Details are unknown, but it seems that it is a product from the 1950's. You can enjoy the warm and tasteful sound unique to vacuum tubes unique to this era. A piece you'll want to make with a vintage unit. There are scratches, dullness, paint peeling, etc. appropriate to the model year (Oikawa Tetsuji) Maintenance information: 2023.3.19 Maintained (◎ Power/Pre common · vacuum tube 5Y3 defect replacement · main volume disassembly, cleaning and repair (grit cannot be completely removed) · 2 electrolytic capacitors 200μF specification difference replacement · oil capacitor 1000pF and other defective replacements 5 · resistance 10W and 2W deterioration exchanges 3 · switching noise reduction measures → spark killer added · vacuum tube socket and RCA jack refit ※Other operations have been checked (measured with rated output AC100-117 V, 14-17 W, SP: 8 ohms) *Due to the structure of the switch, there is a small amount of switching noise in the selector. Main specifications: pre part W304 x H130 x D304 mm 2.7 kg power part use vacuum tube 6L6G x 2, 5Y3GT, 6 x 4, 12 AU7 x 2 W406 x H208 x D173 mm 11.5 kg (actual measurement)
　　
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