MoFi Electronics UltraPhono Pro Phono Preamplifier

Created in collaboration with renowned audio engineer Peter Madnick, UltraPhono Pro distills the core architecture of MoFi's flagship MasterPhono into a streamlined, single-input, all-analogue phono stage. The mission is the same: preserve the sonic integrity MoFi’s mastering engineers capture in the studio by extracting maximum information from your cartridge with as little loss as possible—delivering a natural, unforced presentation without unnecessary complexity. MoFi Electronics UltraPhono Pro Phono Preamplifier Setup is fast and repeatable with gain and loading controls right on the front panel. Choose the setting that fits your cartridge, then use practical listening tools—mono, subsonic, mute, and dim—to tailor playback for real records in real rooms, without breaking the flow of a listening session. UltraPhono Pro is built around a fully discrete J-FET and MOSFET gain stage and a passive, zero-feedback RIAA network—choices made to preserve natural transients and tonal realism without editorializing the source. A seven-stage regulated power supply provides an exceptionally quiet foundation, letting dynamics and low-level detail come through with ease. A passive RIAA equalization network with zero feedback preserves natural transients and tonal realism. Precision film-foil parts maintain equalization accuracy within ±0.05 dB. Gain and loading are right on the front panel for fast, repeatable setup. Dial in a cartridge in seconds, then lock it in with confidence. SPECIFICATIONS Input: RCA jack, voltage mode, single-ended Gain: RCA output: 40dB, 52dB, 65dB Balanced output: 46dB, 58dB, 71dB THD: 10mV@1kHz 40dB gain: 0.005% A-Weighted 10mV@1kHz 65dB gain: 0.005% A-Weighted 1mV@1kHz 40dB gain: 0.010% A-Weighted 1mV@1kHz 65dB gain: 0.013% A-Weighted Loading: 100 Ohms, 300 Ohms, 500 Ohms, 1k Ohms, 47k Ohms Output Impedance: Balanced: 230 Ohms Unbalanced: 115 Ohms Max Output: Maximum Output @1% THD, 10 Volts RMS RIAA Accuracy: ±0.05dB Frequency Response: 10Hz–50kHz ±0.20dB S/N Ratio (20Hz–20kHz): A-Weighted Balanced 40dB gain: 82dB, 93dB Balanced 65dB gain: 78dB, 85dB RCA 40dB gain: 75dB, 83dB RCA 65dB gain: 69dB, 75dB Dimensions: 17” x 2.5” x 11.35” Weight: 7 lbs ADDITIONAL FEATURES • Single-input implementation of MasterPhono’s core architecture • Fully discrete J-FET & MOSFET input/output stages • Passive RIAA equalization with zero feedback • Seven-stage regulated balanced power supply • Front-panel gain and loading controls • Ultra-low-noise design with carefully selected components • Precision RIAA accuracy (±0.05 dB) • Brushed-aluminum panels with rigid steel frame DOWNLOAD MOFI ULTRAPHONO PRO PHONO INSTRUCTION MANUAL - CLICK HERE