※Inexpensive because there are many stains and fine stains. No mounting pins wall-mounted acoustic panel The pyramid-like uneven design and large and small holes control the diffusion and absorption of high and low sounds in a well-balanced manner, creating a natural and spacious sound field. You can see a feeling of use on the exterior, dullness, stains, yellowing, etc. (Kobayashi Hitoshi)
Accessories: none
Main specifications: 600 x 600 x 125 mm thick 1.5 kg
※Inexpensive because there are many stains and fine stains. No mounting pins wall-mounted acoustic panel The pyramid-like uneven design and large and small holes control the diffusion and absorption of high and low sounds in a well-balanced manner, creating a natural and spacious sound field. You can see a feeling of use on the exterior, dullness, stains, yellowing, etc. (Kobayashi Hitoshi)
Accessories: none
Main specifications: 600 x 600 x 125 mm thick 1.5 kg
Set of 4 While inheriting the best-selling model TU-1000, this Harmonix insulator has further extreme tuning effects and convenience. You can see a feeling of use, such as appearance, dullness, small scratches, etc. (Kobayashi Hitoshi)
Accessories: none
Main specifications: cherry wood W50 x H33 mm 378 g
Set of 4 Ebony-metal hybrid construction The impression is that fine sound loss, nuance, and range expansion have increased, and the sense of volume and expressiveness have improved. You can see a feeling of use, such as appearance, dullness, abrasions, etc. (Kobayashi Hitoshi)
Accessories: original box
Main specifications: W50mm×H33mm
3 pieces per pair Standard model of a prop type insulator with an integrated spike and saucer structure. There is a sense of spaciousness and depth in the clear sound field space. Recommended for those seeking to reproduce a stereoscopic sound field. You can see a feeling of use such as appearance, dullness, darkening, etc. (Kobayashi Hitoshi)
Accessories: original box
Main specifications: diameter 39 x height 32 mm weight 268 g/piece load capacity within 15 kg/piece
※Inexpensive because model printing disappears. 3 pieces per pair Standard model of a prop type insulator with an integrated spike and saucer structure. There is a sense of spaciousness and depth in the clear sound field space. Recommended for those seeking to reproduce a stereoscopic sound field. You can see a feeling of use such as appearance, dullness, darkening, etc. (Kobayashi Hitoshi)
Accessories: original box
Main specifications: diameter 39 x height 32 mm weight 268 g/piece load capacity within 15 kg/piece
Unopened item. Brass machined - This is a speaker terminal made of pure copper. If you are a self-made person, please try it (Kobayashi Hitoshi)
Accessories: original bag
Set of 8 No adhesive sheets. Quartz resonators, set of 8, can be attached to audio devices, listening rooms, musical instruments, etc., to effectively suppress vibrations (Kobayashi Hitoshi)
Accessories: none
Set of 2 It has damping and stabilizing effects, and improvements in reverberation sounds such as vocals can also be felt. You can see a feeling of use such as appearance, dullness, small scratches, etc. (Kobayashi Hitoshi)
Accessories: none
Main specifications: load capacity: approx. 100 kg
Set of 2 It has high rigidity and high stability, and can also be used for heavyweight components. I have the impression that it leads to sound separation, interruption, and improved quietness. You can see a feeling of use, such as appearance, dullness, small scratches, etc. (Kobayashi Hitoshi)
Accessories: none
Main specifications: Load capacity: approx. 100 kg per piece (compatible with a total of 400 kg when using 4 pieces) Outer dimensions: 53 x 53 x 10 mm
※The original box is cheap because of sunburn. USB cable 0.3 m uses PCOCC‑A conductors (high-purity oxygen-free copper) for both the signal section and power supply section, and the power line is relatively thick at 0.37 SQ, making it possible to supply stable power. You can see the exterior, dullness, and feeling of use (Kobayashi Hitoshi)
Accessories: original box
USB cable 0.3 m uses PCOCC‑A conductors (high-purity oxygen-free copper) for both the signal section and power supply section, and the power line is relatively thick at 0.37 SQ, making it possible to supply stable power. The appearance is good with little feeling of use (Kobayashi Hitoshi)
Accessories: original box
Set of 8 No adhesive sheets. Quartz resonators, set of 8, can be attached to audio devices, listening rooms, musical instruments, etc., to effectively suppress vibrations. There are 2 different colors (Kobayashi Hitoshi)
Accessories: none
Set of 8 No adhesive sheets. Quartz resonators, set of 8, can be attached to audio devices, listening rooms, musical instruments, etc., to effectively suppress vibrations (Kobayashi Hitoshi)
Accessories: none
Set of 8 No adhesive sheets. Quartz resonators, set of 8, can be attached to audio devices, listening rooms, musical instruments, etc., to effectively suppress vibrations (Kobayashi Hitoshi)
Accessories: none
It is a device that has electromagnetic waves generated from a unique printed coil and circuit, counteracts harmful electromagnetic waves generated from audio equipment transformers, and improves sound quality by improving SN/sound image localization. To use it, simply turn on the switch and place it under the power transformer section or output transformer part of the device being used. You can see the exterior, dullness, and feeling of use (Kobayashi Hitoshi)
Accessories: instruction manual, original box
Main specifications: W80 x D105 x H14 mm approx. 70 g
It is a device that has electromagnetic waves generated from a unique printed coil and circuit, counteracts harmful electromagnetic waves generated from audio equipment transformers, and improves sound quality by improving SN/sound image localization. To use it, simply turn on the switch and place it under the power transformer section or output transformer part of the device being used. You can see the exterior, dullness, and feeling of use (Kobayashi Hitoshi)
Accessories: none
Main specifications: W80 x D105 x H14 mm approx. 70 g
It is a device that has electromagnetic waves generated from a unique printed coil and circuit, counteracts harmful electromagnetic waves generated from audio equipment transformers, and improves sound quality by improving SN/sound image localization. To use it, simply turn on the switch and place it under the power transformer section or output transformer part of the device being used. You can see the exterior, dullness, and feeling of use (Kobayashi Hitoshi)
Accessories: none
Main specifications: W80 x D105 x H14 mm approx. 70 g
Noise suppression accessory for I-FI Audio's DC power supplies. By simply connecting it between the DC power supply device and the power adapter, it generates a noise signal and a signal in the opposite phase to remove noise (Kobayashi Hitoshi)
Accessories: original box, instruction manual
Main specifications: Compatible with 5V-24V DC power supply units (maximum 3.5A, 84W) IFI “Final” magnetic shielding/aircraft-grade aluminum chassis adapter outer diameter/inner diameter 5.5 ✕ 2.1 mm (adapter/5.5 ✕ 2.5 mm 3.5 ✕ 1.35 mm) 107 g (actual measurement including original box)
* Since the antenna operating part on one side is disconnected, it is inexpensive and is currently sold. Pioneer Hi-Res compatible network CD receiver. All-in-one audio with CD, AM/FM tuner, internet radio, and Bluetooth In addition to the exterior, as described above, a feeling of use can be seen, such as dullness, abrasions, marks, etc. (Kobayashi Hitoshi)
Maintenance information: 2025.9.9 operation confirmed
Accessories: remote control
Main specifications: compatible media/CD, CD-R/RW wide FM MP3 playback Bluetooth/Ver. 4.1, A2DP/AVRCP 65W+65W (4Ω) size W290 x H98 x D333 mm 3.5 kg
*Currently sold. A speaker system incorporating a full-range DCU-F121W using Park Audio's Sapele mahogany multi-layer wood cone into an unknown enclosure. The careful construction of the tasteful enclosure makes a good impression. You can see a feeling of use such as appearance, dullness, scratches, etc. (Kobayashi Hitoshi)
Maintenance information: 2025.9.9 operation confirmed
Accessories: none
Main specifications: DCU-F121W: impedance 6Ω input 30W W191H349D265 mm weight 5g
※Inexpensive because there is no felt. Set of 4 spikes from Jeff Roland A spike holder is also included. The know-how on resonance countermeasures cultivated over many years has been used to the fullest. You can see the exterior, dullness, and feeling of use (Kobayashi Hitoshi)
Accessories: original box
Main specifications: spike 32 x 18.5 mm, 21 g/piece, base 32 x 3.5 mm, 21 g/piece
Set of 4 spikes from Jeff Roland A spike holder is also included. The know-how on resonance countermeasures cultivated over many years has been used to the fullest. You can see the exterior, dullness, and feeling of use (Kobayashi Hitoshi)
Accessories: original box
Main specifications: spike 32 x 18.5 mm, 21 g/piece, base 32 x 3.5 mm, 21 g/piece
External plug (No. 2 HOT) included. This is Series 2 with dual outputs. It is a famous machine that achieves both a mild and highly textured mid to high range while having an unquestionably high amount of information. The high level of musicality that never becomes stiff due to its moderate temperature is also attractive. You can see the exterior, missing rubber feet, dullness, abrasions, etc. (Kobayashi Hitoshi)
Maintenance information: 2025.8.31 Operation confirmed
Accessories: original box, 1 pair of input conversion plugs, 1 pair of output conversion plugs
Main specifications: full balance circuit input: XLR x 5/bypass XLR x 1 preamp part: W445 x H80 x D152.5 mm 11 kg power supply part: W445 x H38 x D122 mm 3 kg
A current phono equalizer amplifier equipped with a balanced input terminal dedicated to MC cartridges and has a fully balanced configuration from input to output. Low-noise bipolar transistors for MC cartridges and low-noise JFETs for MM cartridges are used. It is compatible with various cartridges with a wide variety of MC6 and MM3 load impedances, gain switching, etc. Serial C3Y639 (Takasaki Atsushi)
Maintenance information: 2025.9.9 operation confirmed
Accessories: manual, power cord, original box
Main specifications: input impedance, switching 10Ω, 30Ω, 100Ω, 300Ω, 1kΩ at 1kΩ mm, 1kΩ, 1kΩ size W46 ✕ H114 ✕ D407mm weight 14.8 kg
Set of 8 No adhesive sheets. Quartz resonators, set of 8, can be attached to audio devices, listening rooms, musical instruments, etc., to effectively suppress vibrations (Kobayashi Hitoshi)
Accessories: instruction manual, original box
Set of 8 No adhesive sheets. Quartz resonators, set of 8, can be attached to audio devices, listening rooms, musical instruments, etc., to effectively suppress vibrations (Kobayashi Hitoshi)
Accessories: original box
Set of 8 No adhesive sheets. Quartz resonators, set of 8, can be attached to audio devices, listening rooms, musical instruments, etc., to effectively suppress vibrations (Kobayashi Hitoshi)
Accessories: original box
Unused item. Set of 8 Quartz resonators, set of 8, can be attached to audio devices, listening rooms, musical instruments, etc., to effectively suppress vibrations (Kobayashi Hitoshi)
Accessories: instruction manual, original box
6.0m subwoofer line cable with dual core and spiral structure for deep bass. Among its strength, you can also see the elegance typical of an orthophone. You can see the exterior, dullness, and feeling of use (Kobayashi Hitoshi)
Maintenance information: 2025.9.6 continuity confirmed
Accessories: original bag