The driver and how to use it are unknown. It's an item I bought with WE555 before, but I don't know if it fits 555. Please judge from the dimensions. Made of metal (Yasuhito Koshihama)
Main specifications: outer diameter 40mm inner diameter screw part approx. 35mm height 25mm upper outer diameter 24mm inner diameter 20mm
The price has been reduced. 2024/6/5 sales price 348,000 yen Maintained! This is a very well made 300B single amp. The outstanding sharpness and power, and sweet and gorgeous sound are unbearable. The JJ 300B is used as the output tube. It is a combination of the popular transformer TAMURA F-2007 pair, PC-3004, and A-4003. The first stage uses 12AT7, and the rectifier tube uses 5AR4. It comes with a volume and can be connected directly to a CD. There is a ham balancer inside (Yasuhito Koshihama)
Maintenance information: 2024.6.5 maintained (AC cord missing added; wiring changed to output impedance 4Ω → 8Ω; main volume 100K B curve → 2 replacement; vacuum tube 12AT7 deterioration replacement; RCA jack and vacuum tube socket caulking repair. Operation checked with AC 100V (measured with rated output 10W+10W SP8Ω)
Accessories: power cable
Main specifications: output 10W+10W (actual measurement) W434 × H217 × D333 mm 18.9 Kg (actual measurement)
Disposal prices have been reduced. Member prices are not applicable. 2013/7/23 sales price 298,000 yen ※ longitudinal vibration SP special gramophone. serial 6083. The Thomas Edison Sound is now being revived after 100 years. I am impressed by the well-conceived metal horn system, rotation adjustment mechanism, volume adjustment mechanism, etc. in the old fashioned way. There are scratches etc. on the cabinet that make it feel old. It has been repaired to a level where there is no anxiety about playback. Can be used normally (Yasuhito Koshihama)
Maintenance information: 2013.2.17 Maintained (sound box repair, spring repair, rotation adjustment mechanism repair, brake repair) 2013.7.23 operation checked
Accessories: handle, snail
Key Specifications: The needle tip of the sound box is a diamond. Horn opening W345 x H230 mm body dimensions W455 x D515 x H1055 mm
※It smells like air freshener, so it's cheap. Marantz pre-main amplifier with excellent cost performance. The sturdy, heavy construction is unique to the heyday of audio. Class A operation can be switched, and both design and sound quality are unique to that time (Yasuhito Koshihama)
Maintenance Information: 2020.4.4 Maintained (Confirmation Symptom: The power does not turn on. Action: Power supply board repair correction. Fixed due to soldering deterioration in the main amplifier circuit and other circuit boards. Remote wire switch disassembly contact polishing. Bad output relay contact replacement. (I/O pin jack polish)
Accessories: none
Main specifications: 20W+20W (when grade A) 100W+100W (when AB grade) W454 x H165 x D380 mm 17.5 kg