Maintained! This is a Conrad Johnson tubular kit control amplifier that is rarely in stock. You can enjoy an American sound with a bright tone yet a sense of extrusion and richness. There are scratches on the exterior. Serial 80104K (Fujisawa Yukishi)
Maintenance Information: 2025.7.12 Maintained (3 block capacitors replaced. Replace 12 film capacitors. Vacuum tube connection display sticker attached. Balanced volume contact cleaning. The power lamp display is dark, so replace the lens installation LED. Reinstall the volume sub-panel and fix the knobs. (Check the operation of each input/output)
Accessories: circuit diagram
Main specifications: 3 input systems, dimensions W265 x H98 x D220 mm (including protrusions, actual measurement), weight 2.4 kg (actual measurement)
Full maintenance has been completed, such as replacing 39 deteriorated capacitors, overhauling of all SW types, and cabinet polishing repairs! A tubular control amplifier representative of Lux. It is soft and produces good mid-range sounds. As you play, the sound becomes more familiar, so I want this amplifier to stay with for a long time. There are dark spots on the exterior (Mizusaki Ryo)
Maintenance information: 2025.7.10 Maintained (2025.7.10 Low Cut SW has been soldered again. Other inspections, input/output waveform checks, and comprehensive operation tests were performed to confirm normal operation.) 2025.5.27 Maintained (coupling capacitor, electrolytic capacitor, micro SW, spark killer, headphone jack, microphone jack, DIN terminal, vacuum tube socket, main VR replacement. All SW/VOL disassembly contacts have been re-polished, and grease has been applied to prevent oxidation and sulfidation. Micro SW wiring differences were corrected, TREBLE, BASS coaxial VR assembly defects, reassembly, lever SW construction correction, and there was a crackling sound when switching from AUX to Phono, so countermeasures were taken (1 MΩ x 2 added). (Input/output waveform check, sound output test)
Accessories: power cord, copy of instruction manual
Main specifications: vacuum tube 12AX7 x 6/12 AU7 x 1 using a tubular control amplifier Input: 2 phono system, line system, 3 system, tape system, 2 system output: 2 systems W476 x H190 x D275 mm 12 kg
All main parts, such as coupling capacitors, were replaced, and maintenance was carried out with attention to details such as disassembly and polishing for all SW/VOL! Furthermore, they have even repaired the cabinet, so you can use it comfortably. The classic vacuum tube sound from the Golden Age of Luxe that is supple, glossy, and can be listened to for a long time. It boasts unrivaled compatibility with vintage Altec and JBL speakers. Serial 20122058 (Yonejima Satoshi)
Maintenance information: 2025.7.9 maintained (coupling capacitor, electrolytic capacitor, micro SW, spark killer, headphone jack, microphone jack, DIN terminal, vacuum tube socket, main VR replacement. All SW/VOL disassembly contacts have been re-polished, and grease has been applied to prevent oxidation and sulfidation. Input/output waveform check, sound output test. (Audio case repair)
Accessories: power cable, copy of instruction manual
Main specifications: used vacuum tube/12AX7 x 6, 12AU7 x 1 input/2 phono systems, 3 line systems, 2 tape systems output/2 systems W476 x H190 x D275 mm 12 kg
The price has been reduced. 2025/7/4 sales price 498,000 yen A rare initial C20 that was refreshed by replacing all deteriorated main volumes, block capacitors, oil capacitors, and electrolytic capacitors in 2023 is in stock. More than 60 years have passed since it went on sale, but it is a safe 2-year warranty. The tone has a thick, soft touch unique to Old Mackin, and vividly depicts music in the mid to high range with a different luster from C22 (Sasaki Shota)
Maintenance information: 2025.7.3 maintained (vacuum tube 12 AU7 noise exchange/resistance 1/2 W noise exchange, 6 vacuum tube socket and RCA jack re-caulking repair*operation checked with AC 100 to 117 V) 2023.3.4 maintained (starting current inspection and PSE inspection, main volume with gap replacement, 40/20/20 μF, etc., defective and deteriorated 2 electrolysis capacitors Replace 2 1000 μF for original circuits · replace with 0.1 μF or other oil capacitors and ceramic capacitors 33 · replace 4 electrolytic capacitors with 50 μF or other Sprague ones · vacuum tube 12AU7 noise exchange · lamp deterioration exchange · RCA jack and vacuum tube socket caulk repair ※ other operation checked with AC 100 to 117 V※ If the volume is moved after the power is turned on, about 1 minute is the capacitor's charge and (Graining occurs due to the effects of discharge)
Accessories: none
Main specifications: Vacuum tube used 6x4, 12AX7, 12AU7 dimensions W390 x H146 x D315 mm weight 8.3 kg