6550 push pull made by Sun Valley The design imitates Macintosh amplifiers of yesteryear. The sound design is bright, energetic, and supple, and has excellent sharpness that is more responsive than a normal transistor amplifier. There is dullness, dirt, small scratches, and dullness on the metal part of the power cord (Murakoshi Yoichi)
Maintenance information: 2024.6.7 sound output confirmed
Accessories: power cord
Main specifications: 6550 push-pull rated output 40W+40W using vacuum tube 6550, EL84 x 4 (SOVTEK), 12AX7EH x 2 (electro-harmonix) 4Ω/8Ω compatible W430 x D270 x H200 mm 18 kg
A popular model of electric voice equipped with a 46cm woofer. There are 4 bass reflex ports around the woofer, but that wasn't enough, and the midbass also has 1, creating a low frequency with good clarity. Coupled with a mild mid-range and thick high frequencies, it is a speaker that has the flexibility and richness of European sound while having a dynamic structure. Serial S111556 S112448 (Murakoshi Yoichi)
Maintenance information: 2022.6.23 maintained (exterior cleaning, scratching, dent repair, stain area touch up saran net simple cleaning)
2018.7.6 Maintained (Exterior Cleaning Touch Repair Saran Net Replacement Woofer, Mid and Edge Replacement Driver Magnetic Circuit Slit Cleaning Center Adjustment Diaphragm Cleaning Contact Cleaning Network Input Terminal Rust Removal Cleaning Reinforcement Screw Fastener Application BI-AMP Switching Plug Cleaning ATT (SW Type) Cleaning Input/Output Waveform and Balance Check, Sound Output Check frequency characteristics measurement check (~ 42 kHz) was performed, and the original capacitor was continuously used for good results)
Accessories: saran net
Main specifications: 3-way 3-speaker bass reflex floor type woofer 46cm cone type scoker 30cm cone tweeter horn type crossover frequency frequency 250 Hz, 1.5 kHz playback frequency band 40 to 20000 Hz 6 Ω 95dB W64.2 x H119.3 x D45.0 cm 63.0 kg
*Currently sold. Denon's 755 series has excellent cost performance. Even in this price range, the sound quality is as bright and thick as Denon. Furthermore, it is equipped with a USB terminal, so it is possible to play back iPods and USB memory devices. You can see a feeling of use on the exterior, such as dullness and small scratches (Asaine Tomoho)
Maintenance information: 2024.6.8 operation confirmed
Accessories: remote control
Main specifications: frequency characteristics 2 Hz to 20 kHz W434 × H107 × D279 mm 4.2 kg
You can enjoy voluminous bass with highly efficient and heavy cone paper. It is also durable with a gathered edge, and is also recommended for backload and front load enclosures. There are small scratches etc. on the exterior. Serial 7413 10417 (Tomonori Asaine)
Maintenance information: 2024.6.8 operation confirmed
Accessories: none
Main specifications: rated input 150 W frequency characteristics 30 Hz to 2 kHz 16 ohms efficiency 96 dB crossover frequency 800 Hz recommended enclosure volume 170 to 225 liters depth 146 mm 7.5 kg
*Clear Glass 2-tier, 3-tier black, 5-tier type. Spike specification In addition to excellent design, the shelf board has sufficient rigidity even though it has a simple structure, and it is subtly curved and cut so that vibration components gather at the four corners. Although the exterior has a light feeling of use, it is good without noticeable scratches (Tomoho Asaine)
Accessories: none
Main specifications: inch step W600 x H890 x D475 mm from above shelves, 100 mm, 180 mm, 220 mm, 220 mm (actual measurement)
Hamilex (Hayami Industries) glass AV rack with casters. It is also ideal for installing a flat screen LCD TV. Clear glass 12mm thick, silver pole The exterior has a feeling of use such as dullness (Yamato Yuki)
Accessories: none
Main specifications: W1050 x H538 x D45 mm 40.2 kg (actual measurement) 220 mm below 160 mm between shelves, total load capacity approx. 120 kg
*Currently sold. A speaker that can be easily used for multiple purposes, such as for subsystems and AV. It has a gentle and elegant European taste that is more textured than the price. The exterior has a feeling of use such as dullness, small scratches, and partial tears in the saran net. Serial 4067104884 4067104884 (Asaine Tomoho)
Maintenance information: 2024.6.8 sound output confirmed
Accessories: saran net
Main specifications: 2-way 2-speaker bass reflex bookshelf type output sound pressure level 89dB impedance 6Ω dimensions W190 x H322 x D256 mm weight 5.2 kg
The price has been drastically reduced! 2024/6/4 sales price 320,000 yen The maintenance has been completed, but since corn paper repair marks remain, it is cheap. A cutting-edge unit installed in the high-end model K2 S9800. The unit alone is also highly evaluated, and it stretches flat to a very high range, and it is a dynamic sound. As for the exterior, there are repair marks and wrinkles on the corn paper. Serial 01522, 010034 (Fujisawa Yukishi)
Maintenance information: 2024.6.4 maintained (center cap replaced, part of the cone paper torn back side repair)
Accessories: No accessories
Main specifications: 15inch pure pulp cone woofer with Alnico 5DG magnet 8Ω 400W playback frequency band 20Hz to 2kHz minimum resonance frequency 26 Hz 94 dB recommended crossover frequency 800 Hz outer diameter 387 mm x depth 235 mm 18 kg
A cutting-edge unit installed in the high-end model K2 S9800. The unit alone is also highly evaluated, and it stretches flat to a very high range, and it is a dynamic sound. The exterior is good with no conspicuous scratches. Serial 01502, 010030 (Yonejima Satoshi)
Maintenance information: 2024.6.6 sweep test is good
Accessories: No accessories
Main specifications: 15inch pure pulp cone woofer with Alnico 5DG magnet 8Ω 400W playback frequency band 20Hz to 2kHz minimum resonance frequency 26 Hz 94 dB recommended crossover frequency 800 Hz outer diameter 387 mm x depth 235 mm 18 kg
The price has been reduced. 2024/5/24 sales price 35,000 yen Tannoy rectangular yoke type enclosure by Shinkosha, a popular manufacturer of domestic boxes. The construction that sounds good is attractive. A 30cm unit adapter (detachable) is attached to the baffle surface, and casters are attached to the bottom (Murakoshi Yoichi)
Accessories: none
Main specifications: W597 x H108 x D37 mm weight 30 kg
※One shelf board has been added. Quadra Spire Clear Glass 3-tier black 2-tier type in all 5 tiers. In addition to excellent design, the shelf board has sufficient rigidity even though it has a simple structure, and it is subtly curved and cut so that vibration components gather at the four corners. Although the exterior has a light feeling of use, it is good without noticeable scratches (Yamato Yuki)
Accessories: none
Main specifications: inch step W600 x H890 x D475 mm from above shelves 260 mm, 140 mcm, 180 mm, 180 mm (actual measurement)
Pair tube, 5 pole tube, made in America JAN lot: 726/739, measured value 34/30 (rejected value 20) with white box (written on the box) *Pairs are judged based on gM values measured with the test machine TV-7 (Kojima Yosuke)
Accessories: white box
Pair tube earthquake-resistant military standard product special tube getter large triode tube with white box, measured IP value: 47/47 mA (the best standard IP value for this amplifier is 50 mA) *Sound is checked with a test amplifier, plate current values have been measured, and it has been determined that operation is good (Kojima Yosuke)
Accessories: white box
Refresh yourself with interior and exterior maintenance! A gray-finish model of the king monitor 4343B. The balance between thick, strong mids and responsive bass is perfect. A model that wants to make jazz and rock sound thick, thick, and powerful. It's a lot of exhilarating noises. The exterior has been beautifully finished due to maintenance (Tomoho Asaine)
Maintenance information: 2024.5.27 Maintained (exterior repair/all coated saran frame processing correction repair/net replacement, plate maintenance repair, plate maintenance (edge replacement, cone paper coating, center cap replacement)) midmaintenance (edge replacement, cone paper coating, center cap replacement, driver maintenance (magnetic circuit rust removal/gap cleaning/center adjustment, sound absorbing material replacement, terminal cleaning/screw replacement) Tweeter maintenance (magnetic circuit rust removal/gap cleaning, terminal cleaning/screw replacement, exterior painting) horn painting, diffuser repair/painting, baffle plate cleaning unit detachable network maintenance: frequency characteristic check, ATT cleaning, switching SW/terminal cleaning/screw replacement)
Accessories: diffuser saran net
Main specifications: 4 way 4 speaker bass reflex crossover 300 Hz/1,250 Hz/9,500 Hz impedance 8 Ω 93 dB dimensions W635 x H1,051 x D435 mm weight 83.9 kg/1
Although it is an unused item, there is a possibility that mold has occurred because no preservatives have been added. VPI vacuum record cleaner refill cleaner solution (Kobayashi Hitoshi)
Accessories: none