Maintained by the manufacturer! Comes with original box This is a full change model that enhances the degree of perfection of all P-4100 circuits. The latest instrumentation amplifier system is used for the overall configuration, and it is equipped with a mode changeover switch that allows easy bi-amp or bridge connections, improving convenience. The sound of the traditional 4000 series, which has a wide range and high transparency, has been refined. It is generally in good condition. Serial P5Y422 (Yamato Yuki)
Maintenance information: 2025.12.21 maintained (front panel internal indicator, glass cleaning idling adjustment, input/output check OK, safety check/pressure resistance check OK)
Accessories: original box instruction manual power cable
Main specifications: rated output 90W+90W (8Ω) 180W+180W (4Ω) load impedance 2 to 16Ω (in stereo) input RCA1 system, XLR1 system speaker output 2 systems W465 x H190 x D427 mm 28.9 kg
Maintained! A classic British Quad stereo power amplifier. Small in size yet full torque. The sound, which is as deep as a tube amp, exudes an appeal that won't fade. You can see a feeling of use, such as appearance, dullness, small scratches, etc. Serial 15733 (Yamato Yuki)
Maintenance information: 2025.6.7 maintenance completed (dismantling check, constant voltage drive Tr/Rch power stage Tr co-exchange, DC cut C/gain setting C co-exchange, operation check, bias/medium point output adjustment)
Accessories: copy of the instruction manual, power cord, connection cord
Main specifications: 45W+45W W120×H159×D324mm 8.2 kg
Maintained! It comes with a Herman mark! Mono cartridge CA25D. One of the pinnacle of mono needles. The density unique to mono needles, which is not found in stereo needles, is attractive. There is rust on the cantilever. Serial 135502 (Murakoshi Yoichi)
Maintenance information: 2025.12.19 Maintained (damper replacement, coil adhesion repair)
Accessories: original box, needle cover, brush
Main specifications: mono round needle, MC type, output voltage: 1.5 mV, proper needle pressure: 3.5 g; dead weight: 31 g
Audio-Technica's digital audio selector. A convenient item for connecting multiple optical output devices*Please note that it is digital input/output. You can see the exterior, dullness, and feeling of use (Kobayashi Hitoshi)
Maintenance information: 2025.12.13 Operation confirmed
Accessories: power cable
Main specifications: input terminal, square optical jack x 2, output terminal, square optical jack x 4, compatible with sampling frequencies of 32 kHz, 44.1 kHz, 48 kHz, 96 kHz, compatible with audio signals and stereo audio signals up to 24 bits, external dimensions (excluding protrusions) W128 x H26 x D71.5 mm weight (main unit only) approx. 220 g
Digital stream player+multi-input stereo preamp It is equipped with a high sound quality network playback function and a wide range of input terminals, including analog/digital input, MM/MC phono input, and HDMI input. It brings out the full appeal of music from all media. The exterior has dullness, scratches, small scratches, etc. Serial 1291671 (Yonejima Satoshi)
Maintenance information: 2025.12.20 operation confirmed (software4.107.544)
Accessories: remote control, power cord
Main specifications: Support file/FLAC/WAV/ALAC/AIFF/AAC/MP3/WMA compatible sampling frequency 44.1 to 192 kHz compatible bits 16-24 bit Ethernet interface 100Base-T RJ45 input terminal/Ethernet/XLR balanced input 1 system/2 RCA unbalanced input systems (1 of which can be set to an MC/MM phono) /SPDIF coaxial digital input 3 System/TOS optical digital input 3 systems/HDMI input 4 systems output terminal/1 XLR balanced output system/2 RCA unbalanced output systems/1 SPDIF coaxial digital system/TOS optical digital input 1 system/HDMI output (passthrough) 1 system W380 x D380 x H91 mm 6 kg
Maintained! A masterpiece transistor type power amplifier from McKinn's heyday. The powerful, rich, and thick tone is a popular gem among jazz fans of yesteryear. The sound combined with JBL vintage speakers is exceptional. There is rust on the back corner of the exterior (Mizusaki Ryo)
Maintenance information: 2025.12.17 maintained (SP relay, sliders replaced due to plastic cracks in L and R sliders, full METER RANGE, SP switching SW complete disassembly and cleaning, rear input level SW, STEREO/MONO SW, POWER GUARO SW, complete disassembly and cleaning. The SP terminal, RCA terminal, and exterior have been cleaned. Input/output waveform confirmation, meter adjustment (Watts/dB adjustment), load test (1 kHz sine wave, at 8 ohm load: 200W+200W, OK)
Accessories: copy of instruction manual
Main specifications: 200W+200W (1/2/4/8Ω) input sensitivity 0.75/2.5V W411 × H181 × D368 mm 38.6 kg
The price has been drastically reduced. 2025/12/9 sales price 69,800 yen. TOPPING's power amplifier is tuned for extremely clear and accurate sound. You can enjoy it regardless of genre. The appearance is fine, with no noticeable scratches, etc. (Kobayashi Hitoshi)
Maintenance information: 2025.12.9 operation confirmed
Accessories: instruction manual, original box, jumper cable, AC adapter
Main specifications: stereo: 4Ω/120W 8Ω/66W mono: 4Ω/180W 8Ω/220W W220 x H90 x D205 mm approx. 3 kg (actual measurement)
A digital amplifier from the appendix of the 2014/1 issue of the audio magazine “Stereo.” Magazines are not included. It is in good condition with no feeling of use (Oikawa Tetsuji)
Maintenance information: 2025.12.14 Operation confirmed
Accessories: original box, power cable
Main specifications: 12W+12W W94 x H40 x D52 mm 74 g
This cartridge uses an oblong needle and has extremely high traceability. The sound quality is sharp and sharp, with little distortion and high sound resolution. It makes me feel comfortable listening to the sound of the guitar. The exterior has dullness, oxidation, etc. Serial 61050 (Yonejima Satoshi)
Maintenance information: 2025.12.14 Operation confirmed
Accessories: needle cover
Main specifications: mm type stereo cartridge titanium pipe cantilever frequency characteristics 10 Hz to 25 kHz output voltage 2 mV impedance 3.6 kΩ needle pressure range 1.5 g to 2.0 g recommended load resistance 50 kΩ to 100 kΩ dead weight 6 g
The disposal price has been reduced. Member prices are not applicable. 2018/10/7 sales price 2,000 yen small stereo condenser microphone. Perfect for Walkmans with recording function. Comes with a holder. There are black spots on the exterior (Wang Zhan)
Maintenance information: 2018.10.3 operation confirmed
Accessories: clip-on holder, case
Main specifications: directional characteristics/unidirectivity x 2 frequency characteristics 100 to 15,000 Hz output impedance 2.6 kΩ W46 x H25 x D63 mm approx. 50 g
The disposal price has been reduced. Member discounts are not applicable. 2025/8/1 sales price 59,800 yen ※A trance growl will occur, but this cannot be corrected. Maintenance completed in 2019. Dinaco's transistor stereo power amplifier was developed by applying technology obtained with tubular amplifiers to semiconductor circuits. It is a sound that allows you to broadly enjoy the atmosphere without requiring precise expression of sound. There is a feeling of use (Murakoshi Yoichi)
Maintenance information: 2019.8.9 maintained (internal dismantling check, LCH power stage TR/constant voltage TR characteristics defective/circuit board coupling C interruption/capacity loss → replacement, operation check OK)
Main specifications: 60W+60W W330 x H104 x D260 mm 8 kg
The price has been drastically reduced. 2025/11/27 Sales price 118,000 yen Maintained! A classic British Quad stereo power amplifier. Small in size yet full torque. The sound, which is as deep as a tube amp, exudes an appeal that won't fade. The exterior has a feeling of use over time, such as dullness and small scratches. Serial 51928 (Takasaki Atsushi)
Maintenance information: 2025.11.26 Maintained (block condenser liquid leak → replaced with a replacement product because the original is not available, Lch board liquid leak scattering pattern leak → cleaning, resistance burn replacement. (Other C, R, TR check status OK, operation check)
2024.3.22 Maintained (internal all checks, Tr, C, R co-operation check*INPUT modification available, AC code created for cable creation)
Accessories: power cord, instruction manual (copy)
Main specifications: 45W+45W W120×H159×D324mm 8.2 kg
The disposal price has been reduced. Member discounts are not applicable. 2025/10/31 sales price 99,800 yen Maintenance completed! Comes with a Herman mark Mono cartridge CA25D One of the pinnacle of mono needles. The density unique to mono needles, which is not found in stereo needles, is attractive. The tip of the needle cover is cracked, and there is rust on the cantilever. Serial 134940 (Murakoshi Yoichi)
Maintenance information: 2025.10.30 maintenance (damper replacement, output terminal cleaning, coil bonding)
Accessories: needle cover, case
Main specifications: mono round needle, MC type, output voltage: 1.5 mV, proper needle pressure: 3.5 g; dead weight: 31 g
The disposal price has been reduced. Member prices are not applicable. 2024/8/16 sales price 35,000 yen ※ Since the built-in battery cannot be used due to deterioration, it is only driven by the included AC adapter. This is a portable headphone amplifier that uses a vacuum tube (subminiature tube) to amplify the signal. Since it has driving power, the Sennheiser HD800, which has an impedance of 300 ohms, also drives well. The clear and powerful sound that overturns the image of a tube amplifier is impressive (Kojima Yosuke)
Accessories: AC adapter
Main specifications: 1 input (3.5 mm stereo mini), 2 headphone outputs (6.3 mm stereo/3.5 mm stereo mini)
Unopened item! The stereo mini 3.5 mm to RCA cable (female) is 0.2 m. High-purity tinned copper wire is used to provide maximum conductivity and durability, suppress the occurrence of signal distortion and transmission loss, and achieve clear sound (Asaine Satoshi Method)
Accessories: none
Stereo Standard Plug - Stereo Standard Jack x 2 Use 2 stereo headphones with standard plugs for 2 people to enjoy music at the same time. The exterior has a feeling of use such as dullness (Tomoho Asaine)
Accessories: none
The price has been reduced. 2025/3/8 sales price 5,000 yen. A casual, compact digital/analog processor with a focus on the quality of music playback. Compatible with 96 kHz/24 bit for both recording and playback. Since it is equipped with a phono equalizer, it can also be connected directly from a record player. Special chips are used for each D/A converter and A/D converter, so high quality sound can be reproduced. You can see the exterior, dullness, and feeling of use (Kobayashi Hitoshi)
Maintenance information: 2025.3.1 operation confirmed
Accessories: instruction manual, RCA cable, USB cable, CD-ROM, original box
Main specifications: Frequency characteristics 0.3 Hz to 44 kHz (LINE OUT+0/ -0.5 dB) compatible models PC/AT compatible with USB port standard (Intel USB host controller recommended) compatible OS Windows (R) 2000 Japanese version SP3 or later, XP Japanese version SP1 or later (*not compatible with the 64-bit version) input/output terminals audio LINE IN x 1, LINE OUT x 1, headphone output terminal x 1 (φ3.5 mm/stereo) MIC IN x 1 (φ3.5 mm/mono) PC interface USB port x 1 (type B) W137 x H30 x D102.5 mm 0.2 kg
The disposal price has been reduced. Member discounts are not applicable. 2025/8/30 sales price 118,000 yen Maintained! This is QUAD's first transistor preamp. The dark tone, with a sweet sense of humidity, is the British sound itself. The combination with the company's 303 power amplifier is also an attractive system. The appearance, dullness, and feeling of use can be seen. Serial 52112 (Murakoshi Yoichi)
Maintenance information: 2025.8.28 Maintained (volume contact cleaning) 2025.6.19 Maintained (main VOL dismantling, slider repair cleaning. Balance VOL exchange. Replace C in other power supplies and C in PHONO/LINE. (Power SW spark killer replaced, changed to 100V specification)
Accessories: power cord, input/output cable, instruction manual (copy)
Main specifications: external dimensions W550 x H110 x D220 mm, weight approx. 7.4 kg (actual measurement) [33] 3 input/line systems, 1 phono system (MM) [FM3] tubular FM dedicated tuner with automatic stereo/mono switching
*Conductivity has been confirmed, but since the plug is bent, it is inexpensive and is currently sold. Stereo Minnie RCA cable 5.5 m professional cable for studio and stage use. It has no habit, has an honest sound, and is easy to handle with a sturdy structure. There are scratches on the plug (Murakoshi Yoichi)
Maintenance information: 2025.9.15 continuity confirmed
Accessories: none
If you are looking for a mono mini plug to stereo mini plug cable (with resistance) 1.0m unused, please take this opportunity (Kobayashi Hitoshi)
Maintenance Information: Unopened
Accessories: case
If you are looking for a mono mini plug to stereo mini plug cable (with resistance) 1.0m unused, please take this opportunity (Kobayashi Hitoshi)
Maintenance Information: Unopened
Accessories: case
※Shipping service. Separate volume stereo sound preservation edition, 240 audio brands from around the world. Issued from the 1970s to 1980s/2003.31 to listen to the trend of high-end audio. Since the photograph is a sample, the actual item may be broken or there may be markings etc.
※Shipping service. Special Feature = Audition Test for 75 Separate and Integrated Models/World's First! Sound quality comparison of 11 output transformer models, and comparison of 28 successive direct thermal triode models. Published 1995/3/31. Since the photograph is a sample, the actual item may be broken or have markings etc.
※Shipping service. Contents = “Let's have a speaker unit first” The origin of audio The appeal of speaker units (Takatsu Osamu)/Pay attention here! Thorough Research on Successive and Famous Speaker Units/Full Range Units/Coaxial (Coaxial) Units/Woofer Units/Driver Unit Edition■List of Major Standards for Successive Speaker Units by Brand Published 2007/6/30. Since the photograph is a sample, the actual item may be broken or there may be markings etc.
※Shipping service. From Bessatsu Stereo Sound JBL 60th Anniversary Table of Contents = JBL Visitor/JBL PEOPLE Interview: Paul Bente, Gina Herman, Sidney Herman, Yasuda Kotaro, Mark Gander, John Argle/JBL ORIGINAL CATALOG/ JBL ORIGINAL CATALOG/ JBL HISTORY AND HERITAGE/JBL Chronology 1872-2006/2006.10.31 published. Since the photograph is a sample, the actual item may be broken or there may be markings etc.
If you are looking for a mono Minnie stereo mini cable 1.0m unused, please take this opportunity (Kobayashi Hitoshi)
Maintenance Information: Unopened
Accessories: case
If you are looking for a mono mini plug to stereo mini plug cable (with resistance) 1.0m unused, please take this opportunity (Kobayashi Hitoshi)
Maintenance Information: Unopened
Accessories: case
※Shipping service. Stereo Sound Separate Vol/HI-FI COMPONENTS SERIES VOL.1/LUX/S.50.12.30 issued. 259 pages in total. Since the photograph is a sample, the actual product may be broken or there may be markings etc.
Audio Craft 2024, the DIY Audio Ark “Now” and the Future (Iwade Demi), a DIY audio ark that makes full use of materials, the secret story of the Accuphase DF-75 development secret story (Ikigata Saburo) that constructs the ultimate audio, Craftsman Gathering 2024, and the Kiyoto Speaker Remake Guide (Kiyotomamor/ Editorial Department) are samples, so the actual product may be broken or written on.
※Shipping service. Separate volume: Stereo Sound/ The World of Components 1975 SPRING/ Special Feature = Practical Advice for Viewing and Using Audio Systems (Takuya Inoue) /S.50.1.15 published. Since the photograph is a sample, the actual item may be broken or there may be markings etc.