It is a power amplifier in the early years of Boulder in the 1980s. You can hear the sound of strong extrusion like a commercial amplifier. The inputs are balanced and unbalanced, and there is also a stereo and mono toggle switch. The appearance has scratches and dullness. Serial A71 (Kimiya Miura)
Maintenance information: 2021.11.2 Operation confirmed
Accessories: No accessories
Main specifications: 160W+160W Size W483 × H86 × D395mm Weight 18.7 kg
※There is no problem with operation, but since it is inexpensive, it will be handed over as is. The perfect power amplifier for the company's “101MM” speaker. Although it is small, it has a solid output, and a bookshelf sized speaker can drive well enough. A high output mono amplifier can also be converted to a changeover switch. There are stains and scratches on the exterior. Serial 57F150140 (Kimiya Miura)
Maintenance information: 2023.3.29 operation confirmed (there are a few VOL errors, but this is the current situation)
Accessories: no accessories
Main specifications: Output: 20W+20W (4Ω) 40W (4Ω, MONO) Input: RCA (for 5V high level/150mV for low level, 1 system each) Speaker output: 1 system (MONO output switchable) DV6V power output terminal equipped (MAX 200mA) W218 x H60 x D137 mm Weight 2.6 kg
* Because it is cheap, it will be handed over as it is. The ideal power amplifier for the company's 101MM speakers. It will be a model equipped with a dedicated power supply for the Technics CD player SL-XP7. A high output monaural amplifier can also be made by a changeover switch. In addition, it has a DC 6V power output on the back, so it can be used as a power source for decks dedicated to batteries such as the Walkman at that time. The appearance has aging dullness and small scratches. Serial 63F010156 (Satoshi Yonejima)
Maintenance info: 2022.2.10 operation confirmed
Accessories: Instruction manual
Main specifications: Output: 20W+20W (4Ω) 40W (4Ω, MONO) Input: RCA (for 5V high level/150mV for low level, 1 system each) Speaker output: 1 system (MONO output switchable) DV6V Power output terminal equipped (MAX 200mA) W218 × H6 × D137mm Weight 2.6kg
We have drastically reduced the price! 2021/8/4 selling price 10,000 yen* Because it is cheap, it will be handed over as it is. Power amplifier optimized for BOSE 101 speakers Equalizer position for 101 is included to match the frequency characteristics. It is a compact and easy-to-use unit. The appearance has line scratches and dirt. Serial 05F410339 (Kimiya Miura)
Maintenance information: 2021.8.4 operation confirmed
Accessories: No accessories
Main specifications: 20W+20W (4Ω) input stereo 1 system, output stereo 1 system width 218 x height 60 x depth 157mm 2.6 kg