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Entre Et-200 Step Up Transformer Japanese SUT. For sale is an Entre ET-200 step up transformer. This is a true high end SUT designed for MC cartridges with an internal impedance of 10 ohms or less, ideally around 3.5 ohms. It has a gain of 30db. The Entre ET-200 was designed by Yoshio Matsudaira, who went on to found My Sonic Lab. It is in good condition, with some marks on the top front edge, but she sounds excellent. Cartridge Designer Yoshio Matsudaira founded Entre in the late 1970's then went on to design very high end cartridges and MC transformers for Air Tight, Lyra, Koetsu, Miyabi b
It's a buyer's market for used step-up transformers like the My Sonic Lab ET-200 right now, with solid examples turning up under AUD4,000 amid steady supply. At AUD800 with unknown condition, this listing screams bargain—well below our database median of AUD4,393 for comparable recent AUD sales (25th percentile AUD1,953, 75th AUD5,065). You'd be hard-pressed to find a fairer entry point into this ultra-low-output MC territory, assuming it checks out.
Before biting, verify the transformer's step-up ratio (should be around 1:26 for ET-200) and impedance matching for your cartridge—mismatches kill detail. Probe for hum or channel imbalance from oxidized windings, a common age-related gremlin in these 20-year-old units, and insist on original loading plugs plus clean input/output RCA jacks.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
My Sonic Lab emerged from the visionary work of master cartridge designer Yoshio Matsudaira, who founded the company in 2004 in Japan to realize his lifelong pursuit of ultimate phono cartridges. With over four decades in the industry, Matsudaira had already shaped landmark designs for prestigious brands like Koetsu, Air Tight, Miyabi, Luxman, Supex, and Audio Craft, beginning his career at Tokyo Sound Co. in 1959 crafting components for NHK broadcasting. The "My" in the name nods to his initials, reflecting a deeply personal endeavor rooted in decades of analog expertise.
The brand focuses exclusively on high-end moving coil phono cartridges, leveraging Matsudaira's breakthrough SH-μX magnetic core material—a high-flux, high-permeability innovation that surpasses traditional iron cores in permeability and density. This proprietary technology minimizes signal loss, internal distortion, and phase issues, delivering natural sound reproduction with exceptional extension, dynamics, and power. Early models like the Eminent high-output MC cartridge and Stage 202 transformer set the tone for a lineup prized by vinyl enthusiasts.
Positioned firmly in the ultra-high-end niche, My Sonic Lab commands reverence among discerning audiophiles for its uncompromising analog purity and rarity. These handcrafted cartridges represent the pinnacle of boutique Japanese engineering, appealing to collectors and serious hi-fi systems where detail retrieval and tonal authenticity reign supreme.
See all My Sonic Lab listings on RADAR.
