MoFi Electronics continues its mission to bring mastering-grade vinyl playback into the home with the UltraPhono Pro a high-performance phono stage developed in close collaboration with acclaimed audio engineer Peter Madnick. This new model takes the essential architecture of the flagship MasterPhono and refines it into a more focused, single-input, purely analog design. The goal remains unchanged: to extract every last detail from the record groove while preserving the natural, unforced musicality that MoFi’s own mastering engineers strive for in the studio.
Preserving Sonic Integrity from Groove to Speaker
At its core, the UltraPhono Pro is built to deliver truth rather than coloration. It employs a fully discrete J-FET and MOSFET gain stage paired with a passive, zero-feedback RIAA equalization network. These design decisions deliberately avoid excessive circuitry and global feedback loops, allowing transients to remain sharp, tonal colors to stay authentic, and low-level information to emerge effortlessly from a silent background.
A sophisticated seven-stage regulated power supply forms the foundation of the circuit, delivering exceptionally clean voltage rails. This ultra-low-noise environment ensures that dynamic swings and delicate micro-details are never masked exactly what serious listeners expect from a modern reference phono stage.
Intuitive Cartridge Matching Right at Your Fingertips
One of the most practical features of the UltraPhono Pro is its front-panel accessibility. Gain and loading are adjustable directly on the unit itself, eliminating the need to open the chassis or power down the system every time you change cartridges.
Available gain settings are 40 dB, 52 dB, and 65 dB (with an additional +6 dB via the balanced XLR outputs), covering the full spectrum from high-output moving magnet designs to low-output moving coil cartridges. Loading options include 100 Ω, 300 Ω, 500 Ω, 1 kΩ, and the classic 47 kΩ, selected via high-quality, hermetically sealed gold-on-gold relays for maximum signal purity.
Real-World Listening Tools That Stay Out of the Way
MoFi understands that vinyl playback happens in real rooms with real records not in anechoic chambers. That’s why the UltraPhono Pro includes a thoughtful set of front-panel controls designed to solve common listening situations without interrupting the musical flow:
- Mono switch — perfect for older mono pressings or for reducing vertical groove noise
- Subsonic filter — gently rolls off unwanted low-frequency energy from warped records
- Mute — instantly silences the output during record changes or stylus cleaning
- Dim function — reduces front-panel illumination for late-night sessions
These tools are immediately accessible and repeatable, so you can fine-tune playback on the fly and stay focused on the music.
Engineered for Silence, Built for Dynamics
The UltraPhono Pro achieves remarkably low distortion and noise levels across all gain settings, with RIAA accuracy within ±0.05 dB and a wide, linear frequency response from 10 Hz to 50 kHz (±0.2 dB). The result is a phonostage that remains composed and transparent even during the most demanding passages, letting the emotional content of the recording come through unaltered.
The Modern Reference for Serious Vinyl Listeners
By distilling the proven performance of the MasterPhono into a more straightforward, single-input format, MoFi Electronics has created a phono stage that combines reference-level engineering with genuine user-friendliness. Whether you’re matching a wide range of cartridges, restoring vintage mono pressings, or simply enjoying the purest possible signal path from groove to amplifier, the UltraPhono Pro delivers the natural, effortless, and deeply involving sound that has long defined MoFi’s approach to analog playback.
