A step-up transformer cased by Audionix using a transformer from the prestigious British transformer manufacturer, Partridges. The natural band balance, the tone has a sense of intonation, and feels good against the skin is attractive. Sound quality deterioration due to switches etc. is avoided with High40ω/Low3Ω compatibility by replacing cables. There is rust on the exterior due to paint peeling off. (Miura Kimiya)
Maintenance information: 2023.4.16 operation confirmed
Accessories: no accessories
Main specifications: input impedance 3 ω/40 ohm switching boost ratio 35 dB frequency band 20 to 50,000 Hz load resistance 47 kΩ size W165 x H120 x D100 mm weight 2.8 kg
※The exterior is in poor condition and the cable is short, so it's cheap. An FR MC boost transformer using a toroidal core. Creating a natural sound that makes it easy to understand the characteristics of the cartridge. In addition to switching between 10 and 30 ohms of impedance, there is also a bypass position, making it compatible with various cartridges without taking up much space. There are scratches and rust spots on the exterior. Also, the cable is getting shorter (about 20 cm) (Tamura Eiji)
Maintenance information: 2023.4.4 operation confirmed
Accessories: no accessories
Main specifications: impedance 10/30/PASS playback frequency band 20Hz to 30kHz W64 x H64 x D105 mm approx. 455 g
*Currently on sale. A limited edition model commemorating the 15th anniversary of the famous DL-103 cartridge. It's a booster transformer that was sold as a set as DL-103 T2 at the time, and it's a thick sound with a firm skeleton (Oikawa Tetsuji)
Maintenance information: 2023.3.30 operation confirmed
Accessories: none
Main specifications: frequency band 20Hz~70kHz 40Ω crosstalk 60dB or more W92 x H55 x D145 mm 720 g
An easy-to-use entray boost transformer with 3 inputs and the ability to select 3 impedance types in addition to PASS. It is made simply and carefully, and the sound quality is well-balanced and precise, and it lifts up honestly and firmly. There are dents on the bottom of the front panel, slight dullness on the exterior, and a feeling of use (Murakoshi Yoichi)
Maintenance information:2023.3.24 sound output confirmed
Accessories: original box
Main specifications: primary impedance 3/10/40 ohms switchable bypass, 3 input systems, W130 x H70 x D186 mm, 2 kg
A booster transformer for mono use only. Excellent compatibility with Ortophone CG25D series mono MC cartridges. Just the right volume can be obtained in the mm position with a weak boost ratio of 12 dB (Oikawa Tetsuji)
Maintenance information: 2023.3.26 operation confirmed
Accessories: none
Main specifications: boost ratio 12 dB input impedance 5 ohm to 50 ohms frequency characteristics 10 to 100 kHz recommended cartridge ca25d/cg25d/ca25di/cg25di W65 x H39 x D98 mm 410g
The price has been reduced. 2023/3/16 sales price 99,800 yen MC boost transformer using an amorphous toroidal core transformer. It makes you hear a heavy, silky sound that you can't imagine from its size. The impedance is switched in 4 stages, including PASS, and is compatible with various cartridges. There are no major scratches, etc., but there is a slight feeling of use (Fujisawa Koshi)
Maintenance information: 2023.3.16 operation confirmed
Accessories: none
Main specifications: 4 position recommended cartridge impedance/pass (when using MM cartridges) Low3ω・Middle15ω・High30Ω W60 x H90 x D210 mm Weight 4.5 kg
The price has been reduced. 2023/3/11 sales price 90,000 yen The dynamic range is wide, the outline of the sound is clear, and the high frequencies make you hear a clear sound. It is a booster transformer that can be used for a wide range of purposes, up to low and high, where impedance can be changed by replacing internal jumpers (Fujisawa Yukishi)
Maintenance information: 2023.3.11 operation confirmed
Accessories: instruction manual, original box
Main specifications: Connection terminal A: recommended cartridge (impedance 5 to 50 ohms) Connection terminal B: recommended cartridge (impedance 10 ohms) recommended transformer output impedance: 47 kΩ 200 pF
Comes with original box! A classic MC step-up transformer. You can freely enjoy a variety of cartridges and tone arms with 2 input systems, a switchable impedance of 3.40 ohms, and a PASS line. The exterior is dull (Kimiya Miura)
Maintenance information: 2023.2.15 operation confirmed
Accessories: instruction manual, original box
Main specifications: MC boost transformer input 2 systems can be switched, primary impedance 40 ohm/3 ohm switching, secondary impedance 4 kΩ, boost ratio 1:10, frequency characteristics 10 Hz to 100 kHz W97 x H65 x D155 mm 800 g
It seems that it was sold exclusively for the CG25DI, which has a winding ratio of 1:2 and an output of 1.5 mV, but those who use other high output MC cartridges should take this opportunity. A boost transformer made assuming a connection between a high gain phono equalizer amplifier and MC cartridge. You can enjoy the thick and taut tone that sets it apart from when you were listening in the MM position (Fujisawa Koshi)
Maintenance information: 2023.3.16 operation confirmed
Accessories: none
Main specifications: input impedance 1 to 6 ohms load impedance 100 to 1 K ohm boost ratio 6 dB no bypass W160 x H108 x D112 mm 2.3 kg
Boost transformer for MC cartridges. Low impedance type. MC booster transformer loaded with transformers developed jointly with Tamura. Ideal for Ortophone MC cartridges. Serial S001 (Takasaki Atsushi)
Maintenance information: 2023.3.12 sound output confirmed
Accessories: none
Main specifications: primary impedance 3Ω secondary impedance 2kΩ boost ratio 25.8 times W174 x H125 x D121 mm 2.5 kg
A classic MC step-up transformer. You can freely enjoy a variety of cartridges and tone arms with 2 input systems, a switchable impedance of 3.40 ohms, and a PASS line. The exterior is slightly dull and there is a feeling of use (Murakoshi Yoichi)
Maintenance information:2023.3.12 sound output confirmed
Accessories: none
Main specifications: MC boost transformer input 2 systems can be switched, primary impedance 40 ohm/3 ohm switching, secondary impedance 4 kΩ, boost ratio 1:10, frequency characteristics 10 Hz to 100 kHz W97 x H65 x D155 mm 800 g
This MC boost transformer is ideal for SPUs using a TYPE0.32M No.6600 JS transformer. The sharp high frequencies and the tenacious sound of the mid and low frequencies make the SPU sound even more energetic. The INPUT terminal has been changed to gold plating. There is a small scratch (Murakoshi Yoichi)
Maintenance information:2023.3.10 sound output confirmed
Accessories: none
Main specifications: boost ratio 31 times, primary impedance with bypass function, 1.5 ohm/secondary impedance 1.5 kΩ Dimensions: W90 x H68 x D88 mm Weight: 420 g
A classic MC step-up transformer. You can freely enjoy a variety of cartridges and tone arms with 2 input systems, a switchable impedance of 3.40 ohms, and a PASS line. The exterior has a feeling of use such as dullness and small scratches (Takahashi Nobuyuki)
Maintenance information: 2023.3.10 operation confirmed
Accessories: none
Main specifications: MC boost transformer input 2 systems can be switched, primary impedance 40 ohm/3 ohm switching, secondary impedance 4 kΩ, boost ratio 1:10, frequency characteristics 10 Hz to 100 kHz W97 x H65 x D155 mm 800 g
※It is inexpensive because the paint peels off noticeably and has a slight tobacco smell. This is an FR boost transformer for MC cartridges (Type L version). This low impedance model is perfect for FR-7 and ORTOFON SPU series. There is a sense of clarity, and the sound is crisp and straight. On the exterior, there are noticeable paint peeling, rust spots, and scratches. Serial 070692 (Satoshi Yonejima)
Maintenance information: 2023.2.26 operation confirmed
Accessories: no accessories
Main specifications: input impedance 3 ohms or less, output impedance 47 to 50 kohms W158 x H60 x D120 mm 2.1 kg
A booster transformer for mono use only. Excellent compatibility with Ortophone CG25D series mono MC cartridges. Just the right volume can be obtained in the mm position with a weak boost ratio of 12 dB (Murakoshi Yoichi)
Maintenance information:2023.2.13 sound output confirmed
Accessories: none
Main specifications: boost ratio 12 dB input impedance 5 ohm to 50 ohms frequency characteristics 10 to 100 kHz recommended cartridge ca25d/cg25d/ca25di/cg25di W65 x H39 x D98 mm 410g
JENSEN's step-up transformer. Specs such as the boost ratio are unknown, but the sound is clear and the treble range is pleasant and easy to see. The exterior is dull (Tamura Eiji)
Maintenance information: 2023.2.15 operation confirmed
Accessories: none
Main specifications: W100 x H70 x D140 mm weight 424 g
The final model of the DENON boost transformer, using all LC-OFC lines. It's small and reasonably priced, yet has a high S/N and clear sound. A versatile type that is compatible with a variety of cartridges from 3 to 40 ohms. The exterior is dull, there is a feeling of use such as small scratches (Takahashi Nobuyuki)
Maintenance information: 2023.2.10 operation confirmed
Accessories: original instruction manual box
Main specifications: LR independent permaloy double shielded compatible cartridge with all-LC-OFC line impedance 3 to 40 ohms boost ratio 1:10 frequency characteristics 20 Hz to 50 kHz W50 x H37 x D110 mm 260 g
A booster transformer for MC using TH-7559 made by the prestigious British transformer manufacturer Partridges can be switched to low high. You can enjoy a clear, solid sound. Perfect for Denon's DL103 series and Altophone MC series. The muting lever switch is attached (Murakoshi Yoichi)
Maintenance information:2023.2.9 sound output confirmed
Accessories: none
Main specifications: input 2 system input impedance pass/low/3ω/high/32ohm switching size measured W150 x H99 x D113 mm weight measurement 845 g
A step-up transformer cased by Audionix using a transformer from the prestigious British transformer manufacturer, Partridges. The natural band balance, the tone has a sense of intonation, and feels good against the skin is attractive. Sound quality deterioration due to switches etc. is avoided with High40ω/Low3Ω compatibility by replacing cables. The exterior is crushed by a single rubber foot, and there is light dullness throughout (Murakoshi Yoichi)
Maintenance information:2023.2.7 sound output confirmed
Accessories: original box
Main specifications: input impedance 3 ω/40 ohm switching boost ratio 35 dB frequency band 20 to 50,000 Hz load resistance 47 kΩ size W165 x H120 x D100 mm weight 2.8 kg
A classic MC step-up transformer. You can freely enjoy a variety of cartridges and tone arms with 2 input systems, a switchable impedance of 3.40 ohms, and a PASS line. There is dullness over time (Sasaki Shota)
Maintenance information: 2023.2.6 operation confirmed
Accessories: nothing
Main specifications: MC boost transformer input 2 systems can be switched, primary impedance 40 ohm/3 ohm switching, secondary impedance 4 kΩ, boost ratio 1:10, frequency characteristics 10 Hz to 100 kHz W97 x H65 x D155 mm 800 g
A step-up transformer cased with UTC's high-grade transformer, LS-10X. Details are unknown, but the volume changed when I turned the knob. It has an unobtrusive, crisp, and clear sound. The fastener on the RCA terminal is slightly sweet, but this is the current situation (Murakoshi Yoichi)
Maintenance information:2022.1.26 sound output confirmed
Accessories: none
Main specifications: LS-10X primary impedance 50kΩ secondary impedance 50,125/150,200/250,333,500/600Ω W86 × H151 × D190 mm 3 kg
Boost transformer using RCA MI-12399. Originally, only transformers designed and manufactured for the purpose of being used as input transformers for commercial sound equipment, especially commercial vacuum tube amplifiers, are attractive. There is a dent in the corner of the transformer (Oikawa Tetsuji)
Maintenance information: 2023.2.5 operation confirmed
Accessories: none
Main specifications: W120 x H94 x D99 mm (actual measurement)
This low-impedance MC boost transformer is ideal for MC20, etc., which have a low output. It can also be matched to SPUs, etc. The thick mid range is excellent for listening. There is 1 input/output system, but since it can be bypassed, it is a convenient design that can be used by switching between both MM/MC (Mizusaki Ryo)
Maintenance information: 2023.1.3 operation confirmed
Accessories: none
Main specifications: boost ratio 32 dB (3 ohms), primary impedance 2 to 4 ohms toroidal transformer, external dimensions W80 x H40 x D130 mm, own weight 600 g
Disposal prices have been reduced. Member discounts do not apply. 2022/12/23 sales price 30,000 yen*Currently on sale. Step-up transformer by Bartolucci, Italy, whose details are unknown. The red and black back terminals are input terminals, and the underside looks like PASS. The upper and lower parts of the outside were pressurized, and the gain was higher on the lower side. I was able to enjoy the vibrant and clear sound with the DL-103. There is dullness all over (Murakoshi Yoichi)
Maintenance information: 2022.12.14 sound output confirmed
Accessories: none
Main specifications: W112 x H57 x D150 mm 0.759 kg
A classic MC step-up transformer. You can freely enjoy a variety of cartridges and tone arms with 2 input systems, a switchable impedance of 3.40 ohms, and a PASS line. The exterior is dull, oxidized, and rubbed. (Miura Kimiya)
Maintenance information: 2022.12.21 operation confirmed
Accessories: instruction manual
Main specifications: MC boost transformer input 2 systems can be switched, primary impedance 40 ohm/3 ohm switching, secondary impedance 4 kΩ, boost ratio 1:10, frequency characteristics 10 Hz to 100 kHz W97 x H65 x D155 mm 800 g
Hi-Fi is in stock for the first time. A boost transformer with low distortion and powerful sound using only parts that have been thoroughly carefully selected. Compatible with a wide range of impedances, you can enjoy it without choosing a cartridge. The extremely high resolution and clear sound quality are attractive. There is a small scar (Sasaki Shota)
Maintenance information: 2022.12.16 operation confirmed
Accessories: none
Main specifications: frequency range 10Hz~70kHz input impedance LOW3~15Ω MID10-30Ω HIGH25~50Ω output impedance 2.5kΩ load resistance 47kohm W196×H92.5×D165mm 10.2kg
The price has been reduced! A standard MC booster transformer with a sales price of 35,000 yen on 2022/11/20. You can freely enjoy various cartridges and tone arms with 2 input systems, a 3.40 ohm impedance switchable, and a PASS line (Kimiya Miura)
Maintenance information: 2022.11.20 operation confirmed
Accessories: instruction manual
Main specifications: MC boost transformer input 2 systems can be switched, primary impedance 40 ohm/3 ohm switching, secondary impedance 4 kΩ, boost ratio 1:10, frequency characteristics 10 Hz to 100 kHz W97 x H65 x D155 mm 800 g
A boost transformer casing Western Electric's KS16608-L1 power amplifier input transformer KS-16611-L1. The balance between depth and sound is perfect. The hum comes out easily, so please firmly attach the ground in line with the phono cable and amplifier. The brass part where the transformer is attached is dull.
Maintenance information: 2022.12.14 sound output confirmed
Accessories: none
Main specifications: 1st order 37.5 ohms, 2nd order 100 kΩ W120 x H188 x D92 mm 0.6 kg
※Operation not confirmed. Silver wire-wound MC step-up transformer for CL-36 for SILVER WIRED TROIDAL CORE 3Ω (ORTOFON, etc.) Good appearance without feeling of use (Hitoshi Kobayashi)
Accessories: original box
Prices have been reduced. 2022/11/6 sales price 79,800 yen This is a rare micro MC transformer. It's not the click-through sound seen on record players, but the natural tone brings out the individuality of cartridges and players. There is a feeling of use such as paint peeling, scratches, etc. (Goto Daiki)
Maintenance information: 2022.11.6 operation confirmed
Accessories: none
Main specifications: Compatible frequency characteristics 15 to 60 kHz 3 kg with 40ω/3Ω input replacement
Denon step-up transformer for MC cartridges. There is a 3ω/40Ω impedance switch including PASS and 2 system input switching, making it a very convenient one. A must have for anyone who uses DL-103 cartridges. There is dullness and feeling of use (Shota Sasaki)
Maintenance information: 2022.11.28 operation confirmed
Accessories: none
Main specifications: MC boost transformer boost ratio 1:10 (40Ω), 1:33 (3Ω), primary impedance 40Ω, 3ω/secondary impedance 4KΩ frequency characteristics 10Hz to 120kHz W155 × H70 × D215mm 2.1kg
*Currently sold. DENON step-up transformer for MC type cartridges. Since it is equipped with a pass circuit, it is convenient when listening by exchanging two types of cartridges (MM type, MC type) with one arm. Also, since it uses transformers designed for DL-103 and DL-103S, it fully demonstrates the capabilities of the models described above. There are a lot of abrasions (Murakoshi Yoichi)
Maintenance information: 2022.11.26 sound output confirmed
Accessories: none
Main specifications: Primary impedance 40 Ω Secondary impedance 4 KΩ boost ratio 1:10 Frequency band 20 to 40 kHz Dimensions W51 x H53 x D181 mm Weight 0.65 kg
* There is no problem with the operation, but since it is inexpensive, it will be handed over as is. Comes with original box Fidelity-Research step-up transformer for MC. A toroidal winding is used for the ring-shaped core, and it has a fine, smooth, and moderately thick tone. The exterior has dullness and small scratches. Serial 067444 (Satoshi Yonejima)
Maintenance information: 2022.11.25 Operation confirmed
Accessories: instruction manual, original box
Main specifications: Primary in 3 to 10 Ω, HIGH 15 to 40 Ω boost ratio low · 33 DB/high · 27 dB bypass possible W64 × H64 × D116 mm 490 g
Self-made step-up transformer with unknown details. Details such as gain are unknown, but it can be used sufficiently as a boost transformer. The exterior has a feeling of use such as dullness (Takahashi Nobuyuki)
Maintenance information: 2022.11.25 Operation confirmed
Accessories: none
A step-up transformer from DAC Denshi Dou, a long-established store in Osaka. It uses the US TRIAD A-10J, which is said to be “equivalent to Western,” and it is a powerful sound character full of vintage feel. It's a bit of a narrow range, but it's perfect for old sound records. The exterior is dull (Murakoshi Yoichi)
Maintenance information: 2022.11.15 sound output confirmed
Accessories: none
Main specifications: primary side 150 ohm/600 Ω, secondary side 60 KΩ W100 × H85 × D75 mm 428 g
The price has been reduced! 2022/11/7 sales price 15,800 yen The final model of the DENON boost transformer using all LC-OFC lines. It's small and affordable yet has a clear sound with high S/N. Versatile type compatible with a variety of cartridges from 3 to 40 ohms. The exterior has a feeling of use such as dullness and magic writing on the side (Asane Tomonori)
Maintenance information: 2022.11.7 sound output confirmed
Accessories: none
Main specifications: All LC-OFC lines adopted, LR independent, permaloy double shielded compatible cartridge impedance, impedance, 3 to 40 Ω, boost ratio 1:10, frequency characteristics, 20 Hz to 50 kHz, W50 x H37 x D110 mm, 260 g
Prices have been drastically reduced. 2022/11/9 sales price 450,000 yen The detailed specs are unknown, but it is wonderful that the lines do not become thin even though it has a very delicate and clear impression. The company's combination with Koetsu's MC cartridges is approaching LINN's high-spec cartridge+Eureka. The exterior is dull (Hitoshi Kobayashi)
Maintenance information: 2022.11.9 Operation confirmed
Accessories: none
Main specifications: W170 × H105 × D120 mm 1.7 kg
* Operation has been confirmed, but since the gully remains when switching, it is inexpensive. Sold as-is. A popular step-up transformer from Entre. It can be switched between 3 ohms and 40 ohms, and bypass is also possible. It has sparkle in the mid-high range, and is characterized by a clean and delicate expression. The exterior has minor scratches and dullness over time. Serial 1501691 (Yamato Yuki)
Maintenance Information: 2022.11.13 Operation confirmed
Accessories: none
Main specifications: 3/40Ω switching size W90 x H80 x D200 mm Weight 1 kg
A must-see item for SPU fans. It is a model loaded with 2 JS transformers of Type0.32m/No.6600, and the characteristics of the Ortofon/SPU system are fully brought out, and the depiction of thickness and stickiness is amazing (Itsuro Mizushima )
Maintenance Information: 2022.11.11 Operation confirmed
Accessories: none
Main specifications: boost ratio 31 times primary impedance 1.5 ω/secondary impedance 1.5 kΩ dimensions W90 x H65 x D80 mm weight approx. 400 g
Phasemation MC step-up transformer It is the successor to the company's standard model T-3. It features a structure that thoroughly eliminates magnetic noise, and the smooth mid-high range with a high sense of SNR is attractive (Murakoshi Yoichi)
Maintenance information: 2022.11.9 sound confirmed
Accessories: none
Main specifications: Compatible cartridge 1.5 to 40 ohms boost ratio 26 dB frequency characteristic 10 to 50 kHz W136 x H88 x D128 mm 1.2 kg
This step-up transformer is ideal for SPUs, etc. It is an MC transformer with excellent thickness and energy feeling, and brings out the characteristics of the cartridge to the fullest. There are no noticeable scratches (Sasaki Shota)
Maintenance Information: 2022.10.10 Operation confirmed
Accessories: none
Main specifications: Input impedance 2 to 6 ohms boost ratio 28 dB load impedance 47 kΩ or more channel separation 80 dB (1 kHz) dimensions W80 x H40 x D128 mm weight 400 g
MC step-up transformer that diverted a transformer equipped with an ALTEC 1567A mixing amplifier. Commonly known as mint candy. The thickness and power of the sound, and the exquisite sense of tone are also popular gems. (Miura Kimiya)
Maintenance information: 2022.11.2 operation confirmed
Accessories: There are no accessories
Main specifications: size W95 x H95 x D130 mm weight 533 g
*Currently sold. A limited edition model commemorating the 15th anniversary of the famous DL-103 cartridge. It is a step-up transformer that was sold as a set as the DL-103 T2 at the time, and it has a thick sound with a solid skeleton. The exterior has a feeling of use over time, such as dullness and small scratches. (Hiroki Aso)
Maintenance Information: 2022.11.1 Operation confirmed
Accessories: none
Main specifications: frequency band 20Hz to 70kHz 40Ω crosstalk 60dB or more W92 x H55 x D145 mm 720g
A classic MC step-up transformer. With 2 input systems, an impedance of 3.40 ohms switchable, and a PASS line, you can freely enjoy various cartridges and tone arms. There is a dent in the upper left corner (Oikawa Tetsuji)
Maintenance Information: 2022.10.23 Operation confirmed
Main specifications: MC boost transformer input 2 systems switchable primary impedance 40 ohm/3 ohm switching secondary impedance 4 kΩ boost ratio 1:10 frequency characteristics 10 Hz to 100 kHz W97 × H65 × D155mm 800g
A self-made MC step-up transformer using Tamura's TKS-24. The knob is not wired and does not work. When I tested it with DL-103, I was able to use it without problems, but the details are unknown. There is rust on the transformer (Oikawa Tetsuji)
Maintenance Information: 2022.10.23 Operation confirmed
Main specifications: W160 × H118 × D150 mm 1.14 kg (actual measurement)
The price has been reduced! 2022 10/1 selling price 29,800 yen This is an ideal step-up transformer for SPUs, etc. It is an MC transformer with excellent thickness and energy feeling, and brings out the characteristics of the cartridge to the fullest. The exterior has a feeling of use over time, such as dullness and small scratches, and some rubber feet have melted. (Hiroki Aso)
Maintenance information: 2022.10.1 operation confirmed
Accessories: none
Main specifications: Input impedance 2 to 6 ohms boost ratio 28 dB load impedance 47 kΩ or more channel separation 80 dB (1 kHz) dimensions W80 x H40 x D128 mm weight 400 g
The price has been reduced. The 2022 3/14 selling price is 25,000 yen. *Currently sold. Audio Development Company Details Unknown A booster transformer for mono cartridges made by casing a transformer. With 250-ohm and 600-ohm switching, the rear input terminal is independent. It's an energetic and glossy sound with a good overhang (Murakoshi Yoichi)
Maintenance information: 2022.3.12 sound output confirmed
Accessories: none
Main specifications: W100 × H90 × D185 mm 1.6 kg