MoFi Electronics UltraDeck + Turntable - Ultra Tracker Cartridge

MoFi's American-Made Entry Point Into Reference Turntables

Mobile Fidelity Sound Lab has spent four decades remastering records. MoFi Electronics is its turntable division, and the UltraDeck was its first design — built in the USA with input from Spiral Groove's Allen Perkins.

An isolated AC synchronous motor turns a stepped Delrin pulley for manual belt-move speed changes between 33⅓ and 45rpm only; 78rpm playback and electronic speed switching aren't offered on this model.

This package ships with MoFi's UltraTracker moving-magnet cartridge factory-installed — a dual-magnet design built around a damped billet-aluminum body and a nude elliptical stylus for low tip mass and superior tracking.

A Simpler Path to MoFi's Turntable Philosophy

A Massive Platter and a Hardened-Steel Bearing

The UltraDeck's 1.3-inch-thick Delrin platter weighs 6.8 pounds and rides on a hardened-steel inverted bearing built from steel, bronze, and sapphire. That combination is more often found in far more expensive turntables. Three aluminum plates are bonded to an MDF core to add mass and damp unwanted resonance.

Four height-adjustable feet, developed in collaboration with Harmonic Resolution Systems, isolate the plinth from the shelf it sits on. That isolation keeps outside vibration — anything that isn't already in the record grooves — from ever reaching the stylus and coloring playback.

The 10-Inch Ultra Tonearm

Custom-developed and made in the USA, the Ultra tonearm rides on smooth ball bearings in a gimbaled design. Its aluminum arm tube is built for low friction in both the vertical and horizontal planes.

Cardas Audio wiring carries the signal from the headshell leads through to gold-plated RCA connectors. That keeps the path from stylus to amplifier as clean as the rest of the design.

What Reviewers Are Saying

The Absolute Sound gave the UltraDeck a 2019 Editors' Choice Award, calling it "a smartly conceived and finely honed design that's already earning its place as an instant classic," citing its isolated motor, Delrin platter, and HRS-designed feet.

Who Is This Turntable Best For?

• You want a matched MoFi cartridge without picking your own — the UltraTracker arrives factory-installed on the Ultra tonearm
• You want real MoFi engineering at the line's entry point — the same platter, bearing, and tonearm philosophy found on pricier MoFi models
• You're comfortable moving a belt to change speeds — 33⅓ and 45rpm are supported manually, with no electronic switch
• Vibration control matters on a budget — HRS-designed feet and a hardened-steel bearing keep noise out of the groove
• You want a cartridge any phono input can drive — the UltraTracker is moving magnet, so almost every MM stage will run it

How Does It Connect to Your System?

The UltraDeck has no built-in phono preamp, so the factory-installed UltraTracker's moving-magnet signal needs an external phono preamp with standard MM gain and correct loading to sound its best.

Once matched, one RCA cable (with the tonearm's own Cardas wiring and gold-plated connectors) runs to your amplifier or receiver's phono input, or to a separate outboard phono preamp.

Pairs Well With

Where the UltraDeck goes from here:

• Phono cartridges — a future step up to a moving-coil design is an option once you're ready
• Phono preamplifiers — a moving-magnet-capable phono stage matched to the UltraTracker
• Integrated amplifiers — with a moving-magnet phono input, or paired with a separate phono preamp
• Audio racks — a rigid, level shelf lets the hardened-steel bearing and HRS feet do their job

Frequently Asked Questions

Does the UltraDeck include a cartridge?

Yes. This package ships with MoFi's UltraTracker moving-magnet cartridge factory-installed.

Does it have a built-in phono preamp?

It needs an external phono preamp with standard moving-magnet gain and loading — there's no phono stage built in.

Is the UltraDeck automatic or manual?

Fully manual, with belt-move speed changes between 33⅓ and 45rpm only — there's no 78rpm support or electronic switching on this model.

Is a dust cover included?

This package ships without one, so you'll want to budget for a dust cover separately.

Can I upgrade the cartridge later?

Yes. The Ultra tonearm also accepts MoFi's MasterTracker and UltraGold cartridges, or a cartridge of your own choosing.

See It in Action

Music Direct compares the UltraDeck to its MoFi siblings:

Audio Advice compares the UltraDeck head-to-head with the StudioDeck:

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Learn More

Want to learn more about turntable setup, cartridge selection, or phono preamps? Visit our Learning Center for guides, tips, and expert advice.