Audio Note AN-S4/M MC StepUp Transformer; Moving Coil

Audio Note AN-S4/M MC StepUp Transformer Highlights

Product: Audio Note AN-S4/M MC StepUp Transformer; Moving Coil

Product SKU: 91783

Serial Number: M-2086

Input Voltage: 120V

Cosmetic Description: Very good condition with minimal visible cosmetic wear including one barely visible scuff on the faceplate. This item has some very light wear, but still presents like new from your listening position.

What is Included: StepUp Transformer, Manual

Functional Notes: Operational condition of this item is excellent, fully tested and no issues found.

Age: Less than one year

# of Owners: 1

Tobacco Exposure: No

Service History: None

MSRP: $6198

Other Notes: 

"The Audio Note AN-S4M is a Level 4 moving coil (MC) step-up transformer crafted for cartridges with 4–6 Ohm internal impedance. Built with premium materials, including custom transformers wound with 99.99% pure silver and 0.1 mm laminated super mumetal 250 cores, it delivers a rich, natural sound that immerses the listener in music without drawing attention to technicalities. Mumetal screening ensures minimal noise, while its standardized 47 kOhm output impedance pairs seamlessly with most moving magnet phono stages.

Reviewers praise the AN-S4M for tonal warmth, realistic timbre, and exceptional clarity, creating a soundstage that feels effortless and emotionally engaging. Each note resonates with precision, offering a “wow” experience that elevates vinyl playback beyond expectations. With carefully optimized impedance matching, this SUT brings out the full character of high-quality MC cartridges, letting melodies and musical detail shine in a truly immersive listening experience."

For cartridges with an impedance of 7 to 9 Ohms

Product Specifications

Reviews:  Review 1

Shipping: Cost to ship this item within the contiguous United States is a flat rate of $80.00- including packaging and insurance. For all other locations including Hawaii, Puerto Rico and Alaska, please request a quote prior to purchase. Items with factory packaging will be double boxed. When factory packaging not available re-usable shipping box with custom injected-foam mold will be used. (for all items over 10 lbs). Note that all items valued over $750 will require a signature upon delivery.