T-7500Denmark

This item has been sold.You can't purchase now. 25-46463-10498-00
T-7500
Manufacture:ortofon
Original price: JPY 200,000
Price: JPY 143,636 Sold Out
Step-up transformers
Denmark 1993 made
Shop: Osu shop
Arrival: 2025-06-06 19:56:29
description
※The smell of tobacco remains. Hi-Fi is in stock for the first time! A model commemorating the 75th anniversary of Ortophone. It is also the best match with the anniversary model MC7500. It has a thick, warm sound that goes well with old sources such as acoustic and jazz vocals. (FUJISAWA KOSHI) Maintenance information: 2025.6.6 operation confirmed Accessories: No accessories Main specifications: frequency characteristics 8Hz to 100kHz input impedance 2Ω to 6Ω boost ratio 25dB dimensions W120xH68xD192 mm weight 1.8 kg

AU-305Japan

This item has been sold.You can't purchase now. 25-46088-07613-00
AU-305
Manufacture:DENON
Original price: JPY 29,000
Price: JPY 18,000 Sold Out
Step-up transformers
Japan 1978 made
Shop: Osu shop
Arrival: 2025-06-06 19:50:48

FRT-3Japan

This item has been sold.You can't purchase now. 25-46594-11508-00
FRT-3
Manufacture:FR
Original price: JPY 20,500
Price: JPY 18,000 Sold Out
Step-up transformers
Japan
Arrival: 2025-06-05 20:04:45
description
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, so it is compatible with various cartridges without taking up much space. There is an abrasion on the side (Murakoshi Yoichi) Maintenance information: 2025.6.4 sound output 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

TYPE 0.32M-15.241Denmark

This item has been sold.You can't purchase now. 25-46367-09660-00
TYPE 0.32M-15.241
Manufacture:JS
Price: JPY 77,091 Sold Out
Step-up transformers
Denmark
Arrival: 2025-05-13 19:32:54
description
The price has been drastically reduced. 2025/5/13 sales price 99,800 yen Maintained! A rare boost transformer with TYPE 0.32M-15.241 cased in a self-made chassis. It goes well with the SPU, and you can listen to wonderful vintage sounds with sticky mid to low frequencies and sharp high frequencies. Please note that the gain is quite high (Murakoshi Yoichi) Maintenance information: 2023.8.18 Maintained (RCA jack detachable, wiring corrected, running test) Accessories: none Main specifications: boost ratio 163 times primary impedance 1.5 Ω secondary impedance 40 kΩ size W123 x H82 x D 80 mm weight 244 g (actual measurement)

AU-310Japan

This item has been sold.You can't purchase now. 25-46406-09999-00
AU-310
Manufacture:DENON
Original price: JPY 14,000
Price: JPY 13,636 Sold Out
Step-up transformers
Japan
Arrival: 2025-05-17 19:52:31
description
*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. The exterior has chipped paint, is dull, and has rust (Murakoshi Yoichi) Maintenance information: 2025.5.16 sound output 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

VertoDenmark

This item has been sold.You can't purchase now. 25-46402-09976-00
Verto
Manufacture:ortofon
Original price: JPY 120,000
Price: JPY 72,727 Sold Out
Step-up transformers
Denmark 2007 made
Arrival: 2025-05-16 19:46:15
description
The price has been drastically reduced. 2025/5/16 sales price 90,000 yen The dynamic range is wide, the outline of the sound is clear, and you can hear a beautiful sound in the high range. It is a boost transformer that can be used for a wide range of purposes, from low to high, where impedance can be changed by replacing internal jumpers. There is light rubbing on the front panel (Murakoshi Yoichi) Maintenance information: 2025.5.16 sound output confirmed Accessories: 2 jumper pins, instruction manual 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 200pF

AU-300LCJapan

This item has been sold.You can't purchase now. 25-46532-11082-00
AU-300LC
Manufacture:DENON
Original price: JPY 20,000
Price: JPY 12,545 Sold Out
Step-up transformers
Japan 1986 made
Arrival: 2025-05-29 20:17:15
description
*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. It is a versatile type that is compatible with various cartridges from 3 to 40 ohms. There are no visible scratches on the exterior, etc., and it is only dull (Kobayashi Hitoshi) Maintenance information: 2025.5.29 sound output 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

ST-70Denmark

This item has been sold.You can't purchase now. 25-46449-10383-00
ST-70
Manufacture:ortofon
Original price: JPY 215,000
Price: JPY 116,364 Sold Out
Step-up transformers
Denmark 2019 made
Arrival: 2025-05-26 20:03:44
description
The price has been reduced! 2025/5/26 sales price 138,000 yen beautiful item with box! MC boost transformer equipped with a custom-made transformer unit for orthophones manufactured by Lundahl. While it is the best match for new-age high-performance MC cartridges, it is compatible with a variety of MC cartridges with a delicate and clear sound without habit. The exterior is slightly dull, but it is generally good (Takahashi Nobuyuki) Maintenance information: 2025.5.26 operation confirmed Accessories: original instruction manual box Main Specifications: Impedance Setting A Boost Ratio: 24dB Compatible Impedance (Recommended Cartridge Internal Impedance): 5Ω to 50Ω Frequency Characteristics (10Hz-100,000Hz): +/- 1dB Recommended Load Resistance Value: 47kΩ Recommended Load Capacity Value: 200pF Impedance Setting B ※ Standard Setting Boost Ratio at Factory for Orthophone MC Cartridges: 30dB Compatible Impedance (recommended cartridge internal Impedance): 10 ohms or less Frequency characteristics (10 Hz-80,000 Hz): +/- 1 dB Recommended load resistance value: 47 kΩ Recommended load capacity value: 200 pF body dimensions W150 mm x H58 mm x D135 mm dead weight 1.2 kg

T-300Japan

This item has been sold.You can't purchase now. 25-46452-10413-00
T-300
Manufacture:Phasemation
Original price: JPY 79,500
Price: JPY 31,818 Sold Out
Step-up transformers
Japan
Arrival: 2025-05-28 20:20:55
description
Comes with original box! 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 to high frequency range with a high sense of signal is attractive. The appearance is fine, with no noticeable scratches, etc. (Kobayashi Hitoshi) Maintenance information: 2025.5.24 Operation confirmed Accessories: original box 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

T-20Denmark

This item has been sold.You can't purchase now. 25-46358-09607-00
T-20
Manufacture:ortofon
Original price: JPY 48,000
Price: JPY 31,636 Sold Out
Step-up transformers
Denmark 1980 made
Arrival: 2025-05-22 19:57:52
description
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 (Tamura Eiji) Maintenance information: 2025.5.22 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 dead weight 600 g

T-320Japan

This item has been sold.You can't purchase now. 25-46402-09974-00
T-320
Manufacture:Phasemation
Original price: JPY 54,000
Price: JPY 38,182 Sold Out
Step-up transformers
Japan 2021 made
Arrival: 2025-05-16 19:27:04
description
This model has refined sound quality by following the numerous know-how cultivated with the higher-level model T-550. Equipped with an MM/MC switcher SW, it is now easier to use. Using the same 10mm thick aluminum slant panel as the T-550, it has clear, high-resolution sound without fogging (Murakoshi Yoichi) Maintenance information: 2025.5.16 sound output confirmed Accessories: none Main specifications: Usable cartridge output impedance 1.5 to 40 ohms load impedance 47 kΩ boost ratio (voltage gain) 26 dB W136 x H92 x D 134 mm 1.3 kg

STA6600Denmark

This item has been sold.You can't purchase now. 25-89025-09897-00
STA6600
Manufacture:ortofon
Original price: JPY 25,000
Price: JPY 90,727 Sold Out
Step-up transformers
Denmark
Arrival: 2025-05-14 18:44:04
description
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. There is no problem with operation, but there is a slight wobble in the RCA terminal (Tamura Eiji) Maintenance information: 2025.5.14 Operation 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

FRT-3Japan

This item has been sold.You can't purchase now. 25-46052-07325-00
FRT-3
Manufacture:FR
Original price: JPY 20,500
Price: JPY 15,273 Sold Out
Step-up transformers
Japan 1978 made
Arrival: 2025-04-15 20:04:27
description
The price has been drastically reduced. 2025/4/15 sales price 19,800 yen. *External cable. 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, so it is compatible with various cartridges without taking up much space. There is a feeling of use such as abrasions on the exterior (Murakoshi Yoichi) Maintenance information: 2025.4.14 sound output 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

STA41Denmark

This item has been sold.You can't purchase now. 25-46332-09446-00
STA41
Manufacture:ortofon
Original price: JPY 25,000
Price: JPY 127,273 Sold Out
Step-up transformers
Denmark 1974 made
Arrival: 2025-05-11 19:47:23

AU-310Japan

This item has been sold.You can't purchase now. 25-46196-08388-00
AU-310
Manufacture:DENON
Original price: JPY 14,000
Price: JPY 13,636 Sold Out
Step-up transformers
Japan 1976 made
Shop: Osu shop
Arrival: 2025-05-07 20:23:07
description
*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. The exterior has chipped paint, is dull, and has rust (Mizusaki Ryo) Maintenance information: 2025.5.7 sound output 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

TYPE 0.32M-15.241Denmark

This item has been sold.You can't purchase now. 25-45943-06452-00
TYPE 0.32M-15.241
Manufacture:JS
Price: JPY 90,727 Sold Out
Step-up transformers
Denmark
Arrival: 2025-05-04 20:10:44
description
Maintained! A rare boost transformer with TYPE 0.32M-15.241 cased on an Audionics chassis. It goes well with the SPU, and you can listen to wonderful vintage sounds with sticky mid to low frequencies and sharp high frequencies. Please note that the gain is quite high (Murakoshi Yoichi) Maintenance information: 2025.5.5 maintained (DIRECT/TRANS changeover switch rewired, RCA terminal replaced with a new one, GND terminal, rubber feet installed) Accessories: none Main specifications: primary impedance 1.5Ω secondary impedance 40KΩ

T94/2Germany

This item has been sold.You can't purchase now. 25-46026-08728-00
T94/2
Manufacture:HAUFE
Price: JPY 90,727 Sold Out
Step-up transformers
Germany
Shop: Osu shop
Arrival: 2025-04-30 20:09:47
description
The disposal price has been reduced. Member prices are not applicable. 2025/4/30 sales price 120,000 yen Details unknown, but it seems to be equivalent to the boost transformer built into the EMT139st equalizer. The shield is sweet, so it's easy to pick up ham. I auditioned on the DL-103, and the boost gain was just right, and none of the bugs were bad. I felt that the mid-range had a rich tone. It will be sold as is (Mizusaki Ryo) Maintenance information: 2025.4.30 storefront sound confirmed Accessories: none Main specifications: boost ratio 1:20 input 7.5Ω output 500Ω W70×H65×D100mm weight 200g

FRT-3Japan

This item has been sold.You can't purchase now. 25-45660-04278-00
FRT-3
Manufacture:FR
Original price: JPY 20,500
Price: JPY 18,000 Sold Out
Step-up transformers
Japan 1978 made
Arrival: 2025-03-14 19:50:07
description
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, so it is compatible with various cartridges without taking up much space. There are scuffs on the sides. (FUJISAWA KOSHI) Maintenance information: 2025.3.14 Operation confirmed Accessories: No accessories 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

ST-M25Denmark

This item has been sold.You can't purchase now. 25-46235-08688-00
ST-M25
Manufacture:ortofon
Original price: JPY 29,000
Price: JPY 31,636 Sold Out
Step-up transformers
Denmark 2009 made
Arrival: 2025-04-30 20:01:04

STA-6600LDenmark

This item has been sold.You can't purchase now. 25-46170-08165-00
STA-6600L
Manufacture:ortofon
Original price: JPY 36,000
Price: JPY 63,455 Sold Out
Step-up transformers
Denmark
Shop: Osu shop
Arrival: 2025-04-26 20:11:34
description
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 bumps on the sides and bottom, and overall dullness and scuffs. There are rubber foot marks on the side (Oikawa Tetsuji) Maintenance information: 2025.4.26 operation confirmed Accessories: none Main specifications: primary impedance 1.5 Ω secondary impedance 1.5 kΩ boost ratio with bypass switch for 1:31 MM

AU-305Japan

This item has been sold.You can't purchase now. 25-46013-06957-00
AU-305
Manufacture:DENON
Original price: JPY 29,000
Price: JPY 18,000 Sold Out
Step-up transformers
Japan
Shop: Osu shop
Arrival: 2025-04-19 19:43:53
description
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 is a scratch (Daiki Goto) Maintenance information: 2025.4.19 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

ET-100Japan

This item has been sold.You can't purchase now. 25-45572-03509-00
ET-100
Manufacture:Entre
Original price: JPY 48,000
Price: JPY 40,909 Sold Out
Step-up transformers
Japan 1977 made
Arrival: 2025-04-05 20:14:42
description
Maintained! 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. The exterior has a feeling of use such as dullness. Serial 10013 (Tomoho Asaine) Maintenance information: 2025.4.5 Maintained (disassemble the rotary switch, change the common terminal drawer part and the crimping eyelet drawer part of the slider brush, fix the brush by batch soldering, and confirm operation) Accessories: none Main specifications: primary impedance 3/10/40 ohm switching, bypass, 3 input systems, W130 x H70 x D186 mm, 2 kg

No.7351Denmark

This item has been sold.You can't purchase now. 25-45943-06451-00
No.7351
Manufacture:JS
Price: JPY 134,545 Sold Out
Step-up transformers
Denmark
Arrival: 2025-04-18 15:03:14
description
Maintained. This step-up transformer is cased from Jorgen Schou's No. 7351 transformer with red dot cap, which is familiar from orthophones. It's a pretty big boost of 177 times the boost ratio. It is suitable for cartridges with an output of 0.25 mV to 0.5 mV. The DL-103 makes an extra thick sound. It is also recommended for those who have Ortofon MC Cadenza etc. You can see a feeling of use such as appearance, dullness, scratches, etc. (Kobayashi Hitoshi) Maintenance Information: 2025.4.16 Maintained (Rch input/output ground wire repair, rewiring and soldering. (GND terminal replaced, new rubber feet added) Accessories: none Main specifications: primary impedance 3.2 ohms secondary impedance 100 ohms W90 × H70 × D80 mm 0.4 kg

昇圧トランス

This item has been sold.You can't purchase now. 25-45991-06813-00
昇圧トランス
Manufacture:JUPITOR AUDIO
Price: JPY 45,455 Sold Out
Step-up transformers
Shop: Osu shop
Arrival: 2025-04-10 20:17:13
description
The LOW impedance specification is compatible with SPU and other orthophone cartridges. It is an attractive car with a fresh and glossy sound. The printing is faint (Daiki Goto) Main specifications: W118 x H92 x D120 mm weight 700 g (actual measurement)

STM-72Denmark

This item has been sold.You can't purchase now. 25-45481-02764-00
STM-72
Manufacture:ortofon
Original price: JPY 13,000
Price: JPY 29,091 Sold Out
Step-up transformers
Denmark 1973 made
Arrival: 2025-02-11 19:47:03
description
The price has been reduced! 2025/2/11 sales price 35,000 yen 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. ※The RCA terminals have been replaced. The exterior has metal parts oxidized and paint peeling. (YONEJIMA Satoshi) Maintenance information: 2025.2.11 operation confirmed Accessories: No accessories Main specifications: input impedance 2 ohms to 3 ohms boost ratio 60 times weight 70 g

CA-MCT1Japan

This item has been sold.You can't purchase now. 25-46005-06891-00
CA-MCT1
Manufacture:Classic Audio
Price: JPY 134,545 Sold Out
Step-up transformers
Japan
Arrival: 2025-04-09 20:15:07
description
This is a classic audio heavyweight MC boost transformer. It is designed to be compatible with all cartridges, and is a cost-effective product. As you can see from its weight, it was created by putting in a considerable amount of material, and is recommended for those looking for a thick sound that sits on your back. There are small scratches in places on the exterior (Yonejima Satoshi) Maintenance information: 2025.4.9 operation confirmed Accessories: No accessories Main Specifications: Special Oil Dump System Renewable Frequency Range 10 Hz or less to 100 kHz Boost Ratio: Hi · 27dB (1:22) Compatible Cartridges: DENON DL-103, etc. Low 35dB (1:33) Compatible Cartridges: Ortofon SPU Systems/Audio-Technica AT33, etc. Recommended input impedance: HI, 20 ohm to low, 1 ohm to 20 ohm, recommended load resistance 47 kΩ, W210 x H100 x D190 mm, weight approx. 10.3 kg

SPU-T100Denmark

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SPU-T100
Manufacture:ortofon
Original price: JPY 180,000
Price: JPY 207,273 Sold Out
Step-up transformers
Denmark 1996 made
Arrival: 2025-04-05 20:16:01
description
A boost transformer designed to take advantage of SPU features. If you have an SPU, I definitely want you to use it. It lets you listen to heavy sound with high resolution and thickness in the mid to low range. There is a feeling of use on the exterior, such as dullness or disappearing lettering (Tomoho Asaine) Maintenance information: 2025.4.5 sound output confirmed Accessories: none Main specifications: input impedance 1 to 6 ohms, boost ratio, 26 decibels, 2 channels, completely separate structure, triple shielded input/output terminals, rhodium plating, W160 x H105 x D112 mm, 2.3 kg 

EMT用自作昇圧トランス

This item has been sold.You can't purchase now. 25-45943-06453-00
EMT用自作昇圧トランス
Manufacture:不明
Price: JPY 45,455 Sold Out
Step-up transformers
Arrival: 2025-04-04 19:52:08
description
*The TRANS/DIRECT changeover switch has been passed. A step-up transformer with an unknown transformer cased in an audionics chassis. The previous owner seems to have used EMT cartridges, but specs such as manufacturer, model number, boost ratio, etc. are unknown. There is a feeling of use such as dullness throughout (Murakoshi Yoichi) Maintenance information: 2025.4.3 sound output confirmed Accessories: none Main specifications: W90 x H66 x D80 mm 415 g (actual measurement)

285EU.S.A

This item has been sold.You can't purchase now. 25-45696-04667-00
285E
Manufacture:Western Electric
Price: JPY 516,364 Sold Out
Step-up transformers
U.S.A 1947 made
Arrival: 2025-03-20 20:21:29
description
The price has been drastically reduced! 2025/3/20 sales price 698,000 yen Casing 2 285E famous input transformers made by Western in the United States. It can be used as an MC transformer. You can enjoy the clear and rich sound (Oikawa Tetsuji) Maintenance information: 2025.3.20 storefront operation confirmed (the pressure was boosted without hum using an MC cartridge) Accessories: none Main specifications: 600 ohms: 25 KΩ boost ratio 1:6.45 W 120 x H140 x D 80 mm weight 1.3 kg

STM-72Denmark

This item has been sold.You can't purchase now. 25-45819-05634-00
STM-72
Manufacture:Ortofon
Original price: JPY 13,000
Price: JPY 31,818 Sold Out
Step-up transformers
Denmark 1973 made
Shop: Osu shop
Arrival: 2025-03-24 20:15:35
description
Comes with original box. 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 a dull feeling of use (Sasaki Shota) Maintenance information: 2025.3.24 Operation confirmed Accessories: original box Main specifications: input impedance 2 ohms to 3 ohms boost ratio 60 times weight 70 g
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