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A428BU.S.A

Manufacture:ALTEC
Price: JPY 270,909 Sold Out
20-29766-40550-00
U.S.A
Arrival: 2021-03-21 20:11:03
Phonoi-collizer using ALTEC A428B and power supply P522B · P523B. It is a good thick sound that looks like ALTEC, and compatibility with jazzs on the west coast is exactly the best match. It is possible to switch MM/MC by switching the A428B throttle out the internal SW. Appearance, there are stains and scratches. (Eiji Tamura) Maintenance Information: 2021.3.21 Maintenance (Attenuator Volume Internal Resolved. Added RCAJack as input terminal for MM and MC, output terminal is changed to RCA terminal. Added MM and MC switching switch in the unit. Vacuum Tube 6072 (Electro-Harmonix) ✕ 4 Replacement Unit connection connector ✕ 5, connecting cable exchange, wiring change around ground treatment to improve residual noise. Degraded coupling capacitor exchange, heater circuit diode. Sound out test was carried out. (* Balance will be unwired) Accessories: Attache case Main Specifications: Gain: 29dB (1kHz · mm) 50dB (1KHz · MC) Input impedance: mm43kΩ/MC250Ω Output Impedance 600Ω W530 ✕ H210 ✕ D330mm Weight 23.6 kg
　　
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