Disposal prices have been reduced. (Member discounts are not applicable) 2022 8/19 Sales price 498,000 yen Maintenance completed! This is a pair of tube mono power amplifiers where you can feel the “Voice of Theater” with the intense sound of EL34 para-push. It was active in movie theaters from 1957 to 1970, and it demonstrates a great deal of power even at large venues. The middle range, which penetrates far and wide of a peerless transformer, is comfortable, and you can experience the exhilarating sound that pops forward and forward. Overall, there is rust on scratches and transformers. There is a slight growl in the trance. Mitigation measures have been implemented, but groans corresponding to the model year remain. Serial 1990/2004 (Hitoshi Kobayashi)
Maintenance information: 2022.8.18 maintenance (input cable ASSY remake x 1 pair · HUM ADJ readjustment. No.2004 side vacuum tube 5U4GB replacement (Other operations including aging have been checked at AC 100 to 117V.) 2022.2.11 maintenance (resistor replacement, running test) 2020.11.22 maintenance (*measures to reduce transformer growl → rubber pad added between transformer and chassis (complete repair not possible), (Vacuum tube 6CG7 selected product replacement gain countermeasures → 1W resistor added 1 x 2.) 2020.2.1 Maintained (vacuum tube 6CG7 replacement x 2, vacuum tube EL34 replacement x 2, 1 vacuum tube EL34 replacement x 2, oil capacitor 0.5 μF replacement x 2 x 2 replacement x 2, electrolysis Capacitor 50μF replacement 2 pieces, power switch replacement 1 x 2, spark killer addition x 2, input cord ASSY production 1 x 2, resistor 1W replacement x 2, resistor 1/2W addition x 2, vacuum tube Socket and RCA jack caulking repair ◎ 2004 side, oil capacitor 0.22 μF replacement, output transformer rewind repair. ◎ 1990 side: 2 oil capacitors, 0.22 μF replacements, 1 W resistors, and 2 others. Other operations have been checked (measured at 66 to 94 W SP: 8 ohms at rated output AC 100 to 117 V)
Accessories: none
Main specifications: maximum output 80W W482 × H221 × D189 mm 14.9 kg
Maintained! Altec's ultra-rare mono power amplifier. The 6550 push-pull configuration is unusual for a company that often uses EL34. The transparent yet torque-full, hot sound will unexpectedly relax your face. I recommend it not only for Altec speakers, but also in combination with JBL. There is a lot of rust all over (Murakoshi Yoichi)
Maintenance information: 2023.1.25 maintenance (block capacitor 40 μF × 2 defective and deterioration replacement 2 pcs x 2 · electrolytic capacitor 50 μF deterioration replacement, film capacitor replaced with 0.47 μF Cornell dubiler, resistor replaced with 1/2 WUSA, vacuum tube socket and RCA jack cab repair. No. 192 side vacuum tube 6550 replacement, resistance 1/2W deterioration replacement. Operation checked (measured at 25 to 41 W 8 ohms with rated output AC 100 to 117 V)
Accessories: none
Main specifications: 35W mono pair using vacuum tubes 6550 x 2, 12AY7, 12AU7, OA3, 5U4GB, outer dimensions W210 x H182 x D335 mm, weight about 11 kg