Music First Audio has a long history in the production of fine moving coil step up transformers or SUT. These MC cartridge phono amp matching units are used in vinyl systems around the world by many happy customers. Please look below and make your choice. Visit the Offers page for some great SUT offers ready to ship.
2021/2022 range.
3 MC step up units are available in the range
MC Step up transformer MC Step-Up 632. Priced at £625GBP excluding VAT.
Baby Classic MC step up transformer. Priced at £1575.00 GBP excluding VAT.
Classic V2 MC step up transformer. Priced at £2475.00 GBP excluding VAT.
MC Step Up 632.
The MC Step-Up transformer 632 is wound to a step up ratio of the customer’s choice. The usual 1:10 step up ratio is normally available off the shelf. Internal loading resistors can be fitted to customer’s specification. All the Music First Audio step up transformers are designed to give many decibels of external passive gain to enable a MC cartridge to feed a MM Phono Amplifier.

Available in Black or Silver casework.
158 mm deep. Inc RCA’s
108 mm wide
44 mm high
Baby Classic MC Step-Up
Choose your step up ratio. 1:5,1:10 or 1:20. Standard off the shelf units are 1:10 step up. Other ratios are available on request. 6 position loading switch available on the front panel


The Music First Audio Baby Classic Moving Coil Step-Up Transformer ( SUT ) uses the legendary Stevens & Billington Limited TX103 MC Step-Up transformer.
Selectable cartridge loading. Via 6 position switch on the front panel.
3 way grounding switch allows any grounding issues to be addressed easily.
Transformer isolates components, breaking ground loop problems and reducing noise.
Transformer offers gain without adding noise or colouration
Available in black or silver casework.
Classic V2 MC Step-Up unit


Copper wound priced at £2475GBP excluding VAT. Silver wound available at £5250 excluding VAT.
The MC Step-Up V2 is the ultimate moving coil step up transformer. A 25% bigger core than the Baby Classic step-up model.
New step up transformer RX103
New transformer casing.
Improved transformer mounting.
3 ratio step up switch (4 position for silver wound )
6 position loading switch.
Available in black or silver casework.