The disposal price has been reduced! (Member price not applicable) 2025/9/17 sales price 59,800 yen lead battery power MC head amplifier. The sound quality is superior to the price with excellent resolution and freshness. When turning off the power, press and hold the switch for about 3 seconds to turn it off. The exterior is dull. ※This is not a phono equalizer (Satoshi Yonejima)
Maintenance information: 2025.9.17 operation confirmed
Accessories: AC adapter
Main specifications: input impedance 3Ω 10Ω 30Ω 100Ω 300Ω 47kΩ (switchable) W144 × H92 × D155 mm (excluding protrusions) Weight 1.75 kg
The disposal price has been reduced. Member discounts are not applicable. 2025/7/12 sales price 99,800 yen battery-powered MC head amplifier. The modular type allows you to enjoy analog playback like the company's ML series. It has the sharpness and dynamic sound unique to being battery-powered, and the combination with the old SPU is particularly exquisite. There is a feeling of use such as dullness, small scratches, and the printing almost faded. ※The right rear screw is a replacement (Takasaki Atsushi)
Maintenance information: 2018.3.9 maintained (4 C [1000uF6V] replaced, terminals replaced to RCA gold-plated specifications)
Accessories: none
Main specifications: 8 mV (maximum), output terminal with battery checker, 250 mV (maximum), frequency band 20 to 50,000 Hz, W220xH45xD100mm, 0.7 kg
The disposal price has been reduced. Member discounts are not applicable. 2025/8/5 sales price 178,000 yen ※Power supply unit external product. Maintained! MC cartridge head amplifier The RCA terminal specification makes it easy to use, and has a separate power supply structure. The delicate, clear, and powerful sound is attractive. The serial has disappeared (Murakoshi Yoichi)
Maintenance information: 2025.8.4 maintenance completed (all 12 electrolytic capacitors and tantalum capacitors replaced, pin jack replaced, gain changeover switch replaced, each gain readjusted, operation inspected)
Accessories: none
Main specifications: Gain can be adjusted in 3 levels; input impedance can be used up to 45 ohms W175 x H60 x D210 mm 1.4 kg
*Currently sold. Denon's MC head amplifier has HI/LOW MC boost, PASS, and even high-cut filter functions. Thorough noise countermeasures have been implemented, such as a separate power supply and magnetic shielding of the main unit. As a head amplifier, it is popular for its sound that feels like it was in the good days of analog. Overall, there is dullness, dirt, etc. over time (Oikawa Tetsuji)
Maintenance information: 2025.7.16 Operation confirmed
Accessories: none
Main specifications: input impedance 100Ω voltage gain 32dB/24dB/mm (Pass) [amplifier part] W125 × H68 × D292 mm 1.8 kg [power supply unit] W107 × H65 × D141 mm 1.4 kg
Maintenance has been completed, including replacement of all deteriorated transistors inside the module. Battery-powered MC head amplifier. The modular type allows you to enjoy analog playback like the company's ML series. It has the sharpness and dynamic sound unique to being battery-powered, and the combination with the old SPU is particularly exquisite. There are small wounds and dullness (Oikawa Tetsuji)
Maintenance information: 2025.7.15 maintained (all transistors replaced due to deterioration of the module's internal transistors, replaced due to deterioration of the pin jack, correction of capacitor wiring, ground wiring, etc., operation inspection)
Main specifications: 8 mV (maximum), output terminal with battery checker, 250 mV (maximum), frequency band 20 to 50,000 Hz, W220xH45xD100mm, 0.7 kg
※ There is no problem with operation, but since it is cheap, it is sold as is without warranty. An inexpensive headphone amplifier with a built-in 24bit/192 kHz D/A converter. Recommended for those who want to easily get started with high resolution with clear sound quality. The exterior has a feeling of use such as dullness (Tomoho Asaine)
Maintenance information: 2025.6.29 Operation confirmed
Accessories: AC adapter original box
Main specifications: Headphone amplifier 300 mW+300 mW (32 ohms, T.H.D. 10%) 24 bit/192 kHz compatible D/A converter built-in D44 x W105 x D142 mm 465 g
An MC head amplifier that strongly boosts orthophone cartridges that used to have low output. The gain is also 34 dB, and the sound comes out forward (normal MC boost is generally around 26 dB) and can be used with any MC cartridge regardless of impedance. It is an easy-to-use model with a PASS function and subsonic filter function. There is some rust (Oikawa Tetsuji)
Maintenance information: 2025.5.25 Operation confirmed
Accessories: none
Main specifications: boost ratio 34 dB, input impedance 75 ohms, output impedance 140 ohms, W80 x H39 x D 225 mm, 1.3 kg
※There is no problem with operation, but since it is cheap, it will be handed over as is. Phono equalizer with built-in head amplifier for MC. The tone is soft and rich in color. The exterior is smudgy. (SASAKI Shota)
Maintenance information: 2025.6.10 operation confirmed
Accessories: power cable
Main Specifications: Input sensitivity/impedance: 0.5 mV/1 kΩ output level/impedance: 250 mV/750 ohms S/N-75 dB gain 56 dB W100 × H57 × D120 mm 0.3 kg
The price has been reduced. 2025/5/20 selling price 84,800 yen The ultimate version of the P-1. Pure A grade specification, which is rare for a headphone amplifier, so you can enjoy detailed and clear sound. There are small scratches on the exterior (Oikawa Tetsuji)
Maintenance information: 2025.5.20 Operation confirmed
Accessories: power cable
Main specifications: 2W+2W (8Ω) 1W+1W (16Ω) high sound quality feedback circuit “ODNF3.0A”, 2 headphone outputs, 1 RCA/XLR input each, W440 x H82 x D408 mm 8.3 kg
The price has been drastically reduced! 2024/12/11 sales price 59,800 yen The changeover switch has been disassembled and polished and maintained! This is a popular Accuphase head amplifier that is rarely in stock. The all-stage push-pull DC configuration is based on the C-220 and C-240 head amplifiers. Since bypass is possible, MM can also be used. There are stains and stains on the exterior. Serial G9Y284 (Yonejima Satoshi)
Maintenance information: 2024.12.11 Maintained (MC changeover switch disassembly contact polishing cleaning, grease application. I/O terminal cleaning)
Accessories: instruction manual, connection cord
Main specifications: MC head amplifier input/output impedance: 100 ohms frequency characteristics 5 Hz to 100 kHz maximum input level 35 mV dimensions W102 x H61 x D350 mm weight 2.5 kg
MC head amplifier powered by lead batteries. The sound quality is superior to the price with excellent resolution and freshness. When turning off the power, press and hold the switch for about 3 seconds to turn it off. There are no noticeable scratches on the exterior. *This is not a phono equalizer (Tamura Eiji)
Maintenance information: 2024.12.7 operation confirmed
Accessories: AC adapter
Main specifications: input impedance 3Ω 10Ω 30Ω 100Ω 300Ω 47kΩ (switchable) W144 × H92 × D155 mm (excluding protrusions) Weight 1.75 kg
Maintained! Pioneer's full-body masterpiece MC head amplifier is still highly popular! The spatial expression is clever, and multiple measures have been taken against noise and distortion. Detailed GAIN (amplification amount) and Cartridge Road Impedance can be set, and it responds firmly to severe demands. The exterior has dullness, small scratches, and a feeling of use with no lettering (Tamai Jun)
Maintenance information: 2024.12.6 maintained (power lamp/gain switch/load changeover switch, lamp replacement switch removed from board, disassembly contact cleaning/oxide film removal polishing, antioxidant treatment capacitor added, lamp LED distortion ratio minimized, operating point adjustment fiber washer installed)
Accessories: copy of instruction manual
Main specifications: MC head amplifier input sensitivity/impedance 0.2 mV, 0.0625 mV (gain switching) cartridge load resistance 10 Ω, 47 Ω, 100 Ω, 470 Ω output level rating 2.5 mV, maximum 5 V dimensions W142 x H185 x D392 mm weight 7.6 kg
A basic model of the project's best-selling phono equalizer series PHONO BOX. The compact chassis is not bulky even when placed next to the player, and the high sound quality is attractive (Tomoho Asae)
Maintenance information: 2024.11.16 sound output confirmed
Accessories: AC adapter original box instruction manual
Main specifications: input impedance MC100Ω, mm47kΩ input gain mm40dB, MC60dB W103×H36×D104 mm 570g
An MC head amplifier that strongly boosts orthophone cartridges that used to have low output. The gain is also 34 dB, and the sound comes out forward (normal MC boost is generally around 26 dB) and can be used with any MC cartridge regardless of impedance. It is an easy-to-use model with a PASS function and subsonic filter function. Exterior, dullness, rust, corrosion, scuff marks, etc. can be seen (Kobayashi Hitoshi)
Maintenance information: 2024.11.15 Operation confirmed
Accessories: instruction manual, original box
Main specifications: boost ratio 34 dB, input impedance 75 ohms, output impedance 140 ohms, W80 x H39 x D 225 mm, 1.3 kg
The disposal price has been reduced! (Member prices are not applicable) 2024/9/11 sales price 178,000 yen New power supply unit created! All deteriorated capacitors, etc. have been replaced. MC cartridge head amplifier The RCA terminal specification makes it easy to use, and has a separate power supply structure. The delicate, clear, and powerful sound is appealing. The exterior is dull. Serial 0585 (Yonejima Satoshi)
Maintenance information: 2024.9.11 Maintained (new power supply manufactured, all deteriorated electrolytic capacitors and tantalum capacitors replaced, gain changeover switches replaced, pin jack replaced, each gain readjusted, spec inspection, sound output inspection (there is currently no problem with the module))
Accessories: No accessories
Main specifications: Gain can be adjusted in 3 levels; input impedance can be used up to 45 ohms W175 x H60 x D210 mm 1.4 kg
The disposal price has been reduced. Member discounts are not applicable. 2024/6/4 sales price 29,800 yen ※The power supply has been converted to Megane Inlet. Maintained! Head amplifier for Luxman MC cartridges. This head amplifier has no corners and is characterized by a smooth, sit-down sound. You can see a feeling of use, such as appearance, dullness, abrasions, etc. (Kobayashi Hitoshi)
Maintenance information: 2024.6.4 Maintained (GAIN switch disassembly contact polishing, contact grease application after eyelet correction. Transistor replacement for each circuit (DC amplifier, MUTING, power supply). (Running test)
Accessories: power cable
Main specifications: MC type cartridge head amplifier with PASS input impedance/100Ω 20dB/30dB switching W138 x H78 x D305 mm 2.7 kg
*Currently sold. Battery-powered MC head amplifier. Battery checks can also be performed by switching the knobs. This is a DC head amplifier that allows you to enjoy the sound of a cartridge straight away. The exterior is dull (Oikawa Tetsuji)
Maintenance information: 2024.8.22 operation confirmed
Accessories: manual
Main specifications: size W140 x H55 x D265 mm, weight 1.1 kg (batteries not included)
Denon's MC head amplifier has HI/LOW MC boost, PASS, and even high-cut filter functions. Thorough noise countermeasures have been implemented, such as a separate power supply and magnetic shielding of the main unit. As a head amplifier, it is popular for its sound that feels like it was in the good days of analog. You can see the exterior, dullness, and feeling of use (Kobayashi Hitoshi)
Maintenance information: 2024.8.6 operation confirmed
Accessories: instruction manual
Main specifications: input impedance 100Ω voltage gain 32dB/24dB/mm (Pass) [amplifier part] W125 × H68 × D292 mm 1.8 kg [power supply unit] W107 × H65 × D141 mm 1.4 kg
The disposal price has been reduced! (Member prices are not applicable) 2023/6/24 sales price 178,000 yen Maintenance has been carried out and deteriorated capacitors etc. have been replaced! A newly created power supply is included. Genuine RF MC cartridge head amplifier. The RCA terminal specification makes it easy to use, and has a separate power supply structure. The delicate, clear, and powerful sound is attractive (Daiki Goto)
Maintenance information: 2023.6.24 maintained (new power supply manufactured because the power module is defective but cannot be repaired, all deteriorated capacitors replaced, pin jack deterioration replaced, gain changeover switch replaced due to poor contact, each gain readjusted, operation inspected, (there are no current problems with the module)
Accessories: copy of instruction manual
Main specifications: Gain can be adjusted in 3 levels; input impedance can be used up to 45 ohms W175 x H60 x D210 mm 1.4 kg
Maintained. Battery-powered MC head amplifier. The modular type allows you to enjoy analog playback like the company's ML series. It has the sharpness and dynamic sound unique to being battery-powered, and the combination with the old SPU is particularly exquisite. There are scratches and scratches on the exterior. Serial 1232 (Tamura Eiji)
Maintenance information: 2024.4.18 Maintained (there is a liquid leak mark on the battery holder. (It was cleaned and repaired because it was not available.)
Accessories: No accessories
Main specifications: 8 mV (maximum), output terminal with battery checker, 250 mV (maximum), frequency band 20 to 50,000 Hz, W220xH45xD100mm, 0.7 kg
The price has been drastically reduced. 2024/2/27 sales price 34,800 yen Maintained! Yamaha's classic head amplifier. It is a delicate, well-grained sound with good texture in the high frequencies. It can be used by a wide range of people, from beginners to intermediate users, and in addition to the exterior and writing on the back, you can see dullness and a feeling of use (Kobayashi Hitoshi)
Maintenance information: 2024.2.27 Maintenance completed (pin jack repair, replacement of all relevant transistors, capacitors, amplifier section voltage/current adjustment due to migration occurring in the transistors on each board)
Accessories: none
Main specifications: impedance 10 ohm/100 ohm gain low 34 dB high 14 dB input 1 system bypass possible W150 x H67.5 x D352 mm 3.5 kg
Maintained! Marc Levinson battery operated MC head amplifier. In addition to the cutouts and subtlety of the early battery-powered models, this is a popular DC specification model that also ensures a low range with a rich sense of volume. You can also feel the difference in sound quality depending on the battery brand. In addition to being able to see many abrasions on the exterior and control plate, there is a feeling of use such as dullness (Kobayashi Hitoshi)
Maintenance information: 2024.3.23 maintenance completed (POT (100Ω) x 2 replacement, other inspections)
Accessories: none
Main specifications: Drive with 4 x AA batteries, input terminal 8 mV (maximum), output terminal, 250 mV (maximum), frequency band 20 to 50,000 Hz, W146 x H45 x D205 mm, 0.7 kg
Maintained! Comes with a special shell! An MC equalizer amplifier that uses Yamaha's unique pure current amplifier circuit. A satellite amplifier with a FET module configuration is attached immediately after the cartridge and transmitted to the phono equalizer, making it an extremely geeky product. *This is a dedicated phonoico for MC cartridges, and when a FET is not mounted, protection is applied and no sound is produced (Oikawa Tetsuji)
Maintenance Information: 2024.2.4 Maintained (volume replacement. Drive board circuit and other solder deterioration fixes. Operation was confirmed with the included dedicated shell. (This unit cannot be used due to protection unless a dedicated shell is used)
Accessories: satellite amplifier (with shell), instruction manual, original box
Main specifications: gain 63.5 dB rated input 7 mV (1 kHz) rated output 150 mV (1 kHz) maximum output 7.8 V (1 kHz, 6 Vrms) output impedance 100 Ω frequency characteristics 20 Hz to 20 kHz ± 0.3 dB W160 × H96 × D274 mm 2.4 kg
An MC head amplifier that strongly boosts orthophone cartridges that used to have low output. The gain is also 34 dB, and the sound comes out forward (a normal MC boost is generally around 26 dB). It is not affected by impedance and can be used with any MC cartridge. An easy-to-use model with a PASS function and subsonic filter function. There is an appearance, dullness, and a feeling of use (Kobayashi Hitoshi)
Maintenance information: 2023.11.15 Operation confirmed
Accessories: none
Main specifications: boost ratio 34 dB, input impedance 75 ohms, output impedance 140 ohms, W80 x H39 x D 225 mm, 1.3 kg
*There is no problem with operation, but it is sold as is. Fidelix head amplifier. It is designed so that not only noise during an input short circuit, but also the best signal-to-noise ratio can be obtained when a cartridge of 100 ohms or less is mounted (Daiki Goto)
Maintenance Information: 2023.12.27 Operation confirmed
Accessories: none
Main specifications: MC cartridge head amplifier input impedance 100 ohms (32db) 130 ohms (26db) output impedance 150 ohms W125 x H48 x D205 mm weight 500 g
Maintained! Pioneer's full-body masterpiece MC head amplifier is still highly popular! The spatial expression is clever, and multiple measures have been taken against noise and distortion. Detailed GAIN (amplification amount) and Cartridge Road Impedance can be set, and it responds firmly to severe demands. The letters on the front panel have disappeared, there are small scratches etc. on the exterior, etc., and there is a feeling of use (Kobayashi Hitoshi)
Maintenance information: 2023.12.18 maintenance (input/output pin jack soldering removal, rear panel slide rotary switch disassembly, cleaning. Mirror polish and reassemble contacts. Power supply main capacitor replacement. (Amplifier board decoupling capacitor added, distortion minimized adjustment.)
Accessories: copy of instruction manual
Main specifications: MC head amplifier input sensitivity/impedance 0.2 mV, 0.0625 mV (gain switching) cartridge load resistance 10 Ω, 47 Ω, 100 Ω, 470 Ω output level rating 2.5 mV, maximum 5 V dimensions W142 x H185 x D392 mm weight 7.6 kg
The price has been reduced! 2023/10/21 sales price 25,000 yen Maintained! Denon's MC head amplifier has HI/LOW MC boost, PASS, and even high-cut filter functions. Thorough noise countermeasures have been implemented, such as a separate power supply and magnetic shielding of the main unit. As a head amplifier, it is popular for its sound that feels like it was in the good days of analog. The exterior has some marble-like stains due to dirt and oxidative corrosion (Hiura Katsuji)
Maintenance information: 2023.10.18 maintenance (MM/MC changeover relay installation process replacement, push switch contact cleaning, electrolytic capacitor replacement. (Internal chassis cleaning.)
Accessories: none
Main specifications: input impedance 100Ω voltage gain 32dB/24dB/mm (Pass) [amplifier part] W125 × H68 × D292 mm 1.8 kg [power supply unit] W107 × H65 × D141 mm 1.4 kg