Comes with a wooden box! This is the L-type TH-9708, which is the highest peak step-up transformer along with cotters. The detailed, glossy, and deep sound is the true essence of analog playback. There is a small wound (Oikawa Tetsuji)
Maintenance information: 2026.3.1 operation confirmed
Accessories: wooden box
Main specifications: MC boost transformer for LOW impedance, primary impedance 3 ohms, size W165 x H120 x D 100 mm, dead weight 2.75 kg
It is a fairly well-built MC boost transformer that inherits the technology of the AT-1000T, which is the company's highest-grade model. Uses high-grade winding/transformer cores. There are spots and small scratches on the exterior (Wang Zhan)
Maintenance information: 2026.2.12 operation confirmation OK
Accessories: none
Main specifications: MC boost transformer, primary impedance switching, 3 ohm/20 ohm, 40 ohm, secondary (load) impedance 47 kΩ, boost ratio 34 dB (when 3 ohms are selected) 26 dB (20 Ω) 23 dB (40 ohms), W182 x H75 x D141 mm, approx. 3.1 kg
*Currently sold. A popular step-up transformer from Antre. It can be switched between 3 ohms and 40 ohms, and bypass is also possible. It has brilliance in the mid-high range, and features clean and delicate expression. There is dullness and bruising (Oikawa Tetsuji)
Maintenance information: 2026.2.22 operation confirmed
Accessories: none
Main specifications: 3/40 ohm switching size W90 x H80 x D 200 mm weight 1 kg
Comes with original box! RF Enterprise regular import model. Cotter's most popular MARK2 TYPE L has arrived. This is an MC boost transformer for low impedance, such as an Orthophone cartridge. The fresh and powerful sound created by the strong housing and internal wiring using silver wire is attractive. The transformer itself is different from P/PP/S. ※Silver wire breaks easily, so be careful when handling it (Daiki Goto)
Maintenance information: 2026.2.14 Operation confirmed
Accessories: original box
Main specifications: primary impedance 1 to 6 ohm silver wire triaxial output cable, adopted size W76 x H55 x D150 mm, approx. 1.3 kg
This step-up transformer is ideal for SPUs, etc. It is an MC transformer with excellent thickness and sense of energy, and fully brings out the characteristics of cartridges (Wang Zhan)
Maintenance information: 2026.2.12 operation confirmation ok
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
A step-up transformer cased by Audionics using a transformer from Partridge, a prestigious British transformer manufacturer. The natural band balance has a sense of intonation, and a pleasant tone that feels good against the skin. High 40 ohm and low 3 ohm compatibility due to cable replacement avoids sound quality deterioration due to switches, etc. There is no seal on one side of the transformer part, and there is dirt and a feeling of use. (FUJISAWA KOSHI)
Maintenance information: 2026.2.16 Operation confirmed
Accessories: instruction manual
Main specifications: input impedance 3 ohm/40 ohm switching boost ratio 35 dB frequency band 20 to 50,000 Hz load resistance 47 kΩ size W165 x H120 x D 100 mm weight 2.8 kg
A 15th anniversary limited edition model of the famous DL-103 cartridge that Denon is proud of. This is a boost transformer that was sold as a set as an DL-103 T2. There are scratches on the exterior. (TAMURA Eiji)
Maintenance information: 2026.2.14 Operation confirmed
Accessories: none
Main specifications: frequency band 20 Hz to 70 kHz 40 ohms crosstalk 60 dB or more W92 x H55 x D145 mm 720g
An MC boost transformer that uses pure silver wire for the metal coil, all terminals are gold-plated, and the left and right channels have a dual mono structure to prevent mutual interference with hum, noise, etc., and is particular about the purity of sound. It has a thick, warm sound that goes well with old sources such as acoustic and jazz vocals. The exterior has small scratches, dullness, and paint loss (Fujisawa Yukishi)
Maintenance information: 2026.2.11 Operation confirmed
Accessories: No accessories
Main specifications: frequency characteristics 8 Hz to 100 kHz input impedance 3 ohm to 5 ohm gain 30 dB dimensions W120 x H70 x D195 mm weight 1.8 kg
*Currently sold. Audio-Technica step-up transformer. The left and right independent transformers are shielded with a permalloy case. Impedance can be switched between 3, 20, and 40 ohms. The fact that it is equipped with 20 ohms is a nice point. There is a feeling of use such as dullness (Murakoshi Yoichi)
Maintenance information: 2026.2.1 sound output confirmed
Accessories: none
Main specifications: MC switchable step-up transformer, primary impedance, 3/20/40 ohm switching, bypass possible, dimensions W110 x H65 x D150 mm, weight 920 g
Maintained! L type with reinforced shields from the Danish famous Trans JS No. 6600. Since the boost ratio is high, the weak point where it is easy to pick up hum is overcome with a strong shield. Ideal for SPUs and older MC series with poor output, the rich tone is exquisite. There are small dullness scars (Sasaki Shota)
Maintenance information: 2026.2.6 Maintained (The PASS/ON changeover switch was causing poor contact. The inside was opened, the changeover switch was disassembled, the contact part was cleaned with a contact cleaner, and contact grease was encapsulated to eliminate poor contact. In addition, the input/output RCA terminals were polished and cleaned. Also, since the rubber feet were missing, they were newly repaired. (Currently, there is no poor contact between each output terminal and changeover switch, and switching operation is good)
Accessories: none
Main specifications: primary impedance 1.5 Ω secondary impedance 1.5 kΩ boost ratio with bypass switch for 1:31 MM
The price has been reduced. 2026/1/14 sales price 18,000 yen. Currently sold. Popular connector-type MC step-up transformer. It uses an ultra-compact double voice coil, and although it is small, it boosts the voltage well. A powerful machine that lets you hear realistic sounds. It can be used for a wide range of purposes, from SPUs to MC cartridges such as DL-103. In addition to the exterior and bald paint, you can see a feeling of use such as dullness, abrasions, etc. (Kobayashi Hitoshi)
Accessories: none
Main specifications: boost ratio 26 dB adaptive impedance 3 to 40 ohms frequency characteristics 20 Hz to 30 kHz W13 x H13 x D55 mm 20.8 g
This MC boost transformer is ideal for SPUs using the No. 6600 JS transformer. The sharp high frequencies and the tenacious sound in the mid and low frequencies make the SPU sound even more energetic. There are dull stains. The exterior has small scratches, paint peeling, etc. (Ryo Mizusaki)
Maintenance information: 2026.1.12 sound output confirmed
Accessories: none
Main specifications: boost ratio 31 times with bypass function, primary impedance 1.5 ohm/secondary impedance 1.5 kΩ dimensions W90 x H68 x D88 mm weight 420 g
A classic MC boost transformer. With 2 input systems, the impedance can be switched between 3-40 ohms, and a PASS line is included, so you can freely enjoy various cartridges and tone arms. There is a feeling of use (Sasaki Shota)
Maintenance information: 2026.1.12 Operation confirmed
Accessories: none
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 x H65 x D155 mm 0.8 kg
*Since the cable has been replaced, it is inexpensive and is currently sold. DENON's MC type cartridge step-up transformer. Since it is equipped with a pass circuit, it is convenient when listening by exchanging 2 types of cartridges (MM type, MC type). Also, since it uses a transformer designed for the DL-103 and DL-103S, it fully demonstrates the capabilities of the models described above. There are age spots, small wounds, etc. (Oikawa Tetsuji)
Maintenance information: 2026.1.11 Operation confirmed
Accessories: none
Main specifications: primary impedance 40 ohms secondary impedance 4 kΩ boost ratio 1:10 frequency band 20 to 40 kHz W51 × H53 × D181 mm 0.65 kg
Comes with original box This step-up transformer is ideal for SPUs, etc. It is an MC transformer with excellent thickness and sense of energy, and fully brings out the characteristics of cartridges. There are no noticeable scratches (Sasaki Shota)
Maintenance information: 2026.1.12 Operation confirmed
Accessories: original box, manual
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 boost transformer optimized for SPU. The sound creation that is only slightly distorted with a small transformer embodies superb music playback by connecting the SPU. There is dullness, dirt, etc. appropriate for the model year (Oikawa Tetsuji)
Maintenance information: 2026.1.11 Operation confirmed
Accessories: none
Main specifications: input impedance 2 ohms to 3 ohms boost ratio 60 times weight 70 g
There is no problem with operation, but the transformer inside rattles slightly when the main unit is lowered, so it is inexpensive. Low impedance step-up transformer! The cost performance is high, and the treble range is clearly reproduced in a wide range while well covering the bass range, so it is suitable for all genres (Sasaki Shota)
Maintenance information: 2026.1.12 Operation confirmed
Accessories: none
Main specifications: input impedance 10 ohms or less (3.5 ohms optimal) boost ratio 30dB W160 × H70 × D146 mm 2.2 kg
Mono dedicated step-up transformer. Excellent compatibility with orthophone CG25D mono MC cartridges. Due to the weak boost ratio of 12 dB, just the right volume can be obtained in the mm position. It is in good condition with no conspicuous scratches etc. (Mizusaki Ryo)
Accessories: none
Main specifications: boost ratio 12 dB input impedance 5 ohm to 50 ohm frequency characteristics 10 to 100 kHz recommended cartridge CA25D/CG25D/CA25DI/CG25DI W65 × H39 × D98 mm 410 g
The disposal price has been reduced! (Member prices are not applicable) 2025/11/22 sales price 69,800 yen MC boost transformer using American UTC transformers. The cut is sharp and the sound is slightly tight, and it seems to be a good spice. Jazz is sharp, and classical music clearly expresses fine contours. On the exterior, there is a feeling of use over time such as small scratches and dullness, etc., and there is writing on the body (Asaine Tomoho)
Maintenance information: 2025.11.22 sound output confirmed
Accessories: none
Main specifications: MC transformer boost ratio 1:35 input 100Ω output 100kΩ size 150 x 120 x 120 mm weight 1,073 g (actual measurement)
The price has been drastically reduced! 2025/12/21 sales price 128,000 yen 1990s orthophone SPU boost transformer. The core was carefully selected from the specially ordered Hi-Mew Super Permalloy with high magnetic strength for the first time and used. If the impedance is low, it is compatible with various cartridges. Dullness and a feeling of use can be seen. (FUJISAWA KOSHI)
Maintenance information: 2025.12.21 operation confirmed
Accessories: No accessories
Main specifications: input impedance 1 ohm to 6 ohm boost ratio 26 dB frequency characteristics 10 Hz to 100 kHz load impedance 47 kΩ or more size W150 x H108 x D112 mm weight approx. 1.7 kg
MC step-up transformer. It features a body structure that thoroughly eliminates magnetic noise. The sound is fresh and smooth. The range is also wide and the sound quality is relaxed and elegant (Mizusaki Ryo)
Maintenance information: 2025.12.21 sound output confirmed
Accessories: none
Main specifications: Compatible cartridge impedance 1.5 to 40 ohms load impedance 47 kΩ boost ratio 26 dB W133 x H85 x 129 mm 1 kg
UESUGI MC boost transformer, low impedance model. We are loading transformers developed in collaboration with Tamura. Adopts a completely independent structure for the left and right, including the earth system. This model is ideal for orthophone MC cartridges. A sticker is attached to the back (Oikawa Tetsuji)
Maintenance information: 2025.12.16 Operation confirmed
Accessories: none
Main specifications: primary impedance 3 ohms secondary impedance 2 kΩ boost ratio 25.8 times W174 x H125 x D121 mm 2.5 kg
An easy-to-use Antray boost transformer with 3 inputs and 3 impedance types selectable in addition to PASS. It is simple and carefully made, and has good balance and precise sound quality, so it can be lifted honestly and firmly. You can see a feeling of use such as appearance, dullness, scratches, etc. (Kobayashi Hitoshi)
Maintenance information: 2025.12.12 Operation confirmed
Accessories: none
Main specifications: primary impedance 3/10/40 ohm switching, bypass, 3 input systems, W130 x H70 x D186 mm, 2 kg
FR MC boost transformer using a toroidal core. Create a natural sound that makes it easy to understand the characteristics of cartridges. In addition to switching the impedance of 10 to 30 ohms, there is also a bypass position, making it compatible with various cartridges without taking up much space. The exterior and terminals have been changed to external products, and a feeling of use such as dullness and scratches can be seen (Kobayashi Hitoshi)
Maintenance information: 2025.11.22 Operation confirmed
Accessories: none
Main specifications: impedance 10 ohm/30 ohm/PASS playback frequency band 20 Hz to 30 kHz W64 x H64 x D105 mm weight 455 g
*Currently sold. The final model of the DENON step-up transformer using all LC-OFC lines. Small and affordable, yet clear sound with high S/N. Versatile type compatible with various cartridges from 3 to 40 ohms (Shota Sasaki)
Maintenance information: 2025.11.30 Operation confirmed
Accessories: original box, manual
Main specifications: All LC-OFC lines used, LR independent permalloy double shield compatible cartridge impedance, 3 to 40 ohms, boost ratio 1:10, connection cord, 40 mm, frequency characteristics, 20 Hz to 50 kHz, W50 x H37 x D110 mm, 260 g
*Currently sold. The final model of the DENON step-up transformer using all LC-OFC lines. Small and affordable, yet clear sound with high S/N. Versatile type compatible with various cartridges from 3 to 40 ohms (Oikawa Tetsuji)
Maintenance information: 2025.11.24 Operation confirmed
Accessories: none
Main specifications: All LC-OFC lines used, LR independent permalloy double shield compatible cartridge impedance, 3 to 40 ohms, boost ratio 1:10, connection cord, 40 mm, frequency characteristics, 20 Hz to 50 kHz, W50 x H37 x D110 mm, 260 g
The price has been reduced! 2025/11/24 sales price 34,800 yen This MC transformer for high boost 32 dB low impedance is ideal for MC20 etc. with low output. It can also be matched with SPUs, etc. The thick mid-range sounds great. 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. The exterior is dull. ※Only one rubber foot is attached, which is slightly smaller. (FUJISAWA KOSHI)
Maintenance information: 2025.11.24 Operation confirmed
Accessories: No accessories
Main specifications: boost ratio 32 dB (3 ohms) primary impedance 2 to 4 ohms toroidal transformer external dimensions W80 x H40 x D130 mm dead weight 600 g
Phasemation's MC boost transformer. It is the successor to the company's classic model T-3. It features a structure that thoroughly eliminates magnetic noise, and its smooth mid-high range with a high sense of SNR is attractive. There are no noticeable scratches (Daiki Goto)
Maintenance information: 2025.12.10 operation confirmed
Accessories: original box, manual
Main specifications: Compatible cartridge 1.5 to 40 ohms, boost ratio, 26 dB, frequency characteristics, 10 to 50 kHz, W136 x H88 x D128 mm, 1.2 kg
*Currently sold. DENON's MC type cartridge boost transformer. Since it is equipped with a pass circuit, it is convenient when listening by exchanging 2 types of cartridges (MM type, MC type). Also, since it uses a transformer designed for the DL-103 and DL-103S, it fully demonstrates the capabilities of the models described above. There is a feeling that kusumi has been used over time (Sasaki Shota)
Maintenance information: 2025.11.9 operation confirmed
Accessories: none
Main specifications: primary impedance 40 ohms secondary impedance 4 kΩ boost ratio 1:10 frequency band 20 to 40 kHz W51 × H53 × D181 mm 0.65 kg
MC step-up transformer from UESUGI. We are loading transformers developed in collaboration with Tamura. Low impedance model. Adopts a completely independent structure for the left and right, including the earth system. This model is ideal for orthophone MC cartridges.
Maintenance information: 2025.12.6 sound output operation confirmed
Accessories: none
Main specifications: primary impedance 3 ohms secondary impedance 2 kΩ boost ratio 25.8 times W174 x H125 x D121 mm 2.5 kg