UltraPhono Pro

The UltraPhono Pro is an all-analog, single-input phono preamplifier based on the core design of MoFi's MasterPhono. It suits vinyl listeners who want front-panel gain and loading adjustment for their cartridge.

Single-input all-analog phono stage derived from MasterPhono
Discrete J-FET and MOSFET gain stage
Passive zero-feedback RIAA network, ±0.05 dB accuracy
Front-panel gain and loading controls
Mono, subsonic, mute and dim functions
Seven-stage regulated balanced power supply

Fotók

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Leírás

The UltraPhono Pro takes the core circuit design of the MasterPhono flagship and applies it to a single-input phono stage, developed with audio engineer Peter Madnick. It uses a fully discrete J-FET and MOSFET gain stage and a passive RIAA equalization network with no feedback, with precision film-foil parts holding RIAA accuracy to ±0.05 dB.

Gain and cartridge loading are set from the front panel. Three gain settings and five loading values cover a range of cartridges, and listening controls for mono, subsonic filtering, mute and dim are provided. A seven-stage regulated balanced power supply is used to keep noise low.

The input is a single-ended RCA jack in voltage mode. Outputs are available as RCA (unbalanced) and balanced, with different gain values for each. The chassis combines brushed-aluminum panels with a rigid steel frame.

Videó

Műszaki adatok

Márka: MoFi Electronics
Modell: UltraPhono Pro
Kategória: Hi-Fi és otthoni hang › Egyéb Hi-Fi

Inputs

Input: RCA jack, voltage mode, single-ended
Loading: 100 Ohms, 300 Ohms, 500 Ohms, 1k Ohms, 47k Ohms

Outputs

Output impedance (balanced): 230 Ohms
Output impedance (unbalanced): 115 Ohms
Max output @1% THD: 10 Volts RMS

Audio

Gain (RCA output): 40dB, 52dB, 65dB
Gain (balanced output): 46dB, 58dB, 71dB
THD 10mV@1kHz, 40dB gain: 0.005% A-Weighted
THD 10mV@1kHz, 65dB gain: 0.005% A-Weighted
THD 1mV@1kHz, 40dB gain: 0.010% A-Weighted
THD 1mV@1kHz, 65dB gain: 0.013% A-Weighted
RIAA accuracy: ±0.05dB
Frequency response: 10Hz–50kHz ±0.20dB
S/N ratio, balanced 40dB gain (20Hz–20kHz): 82dB, 93dB
S/N ratio, balanced 65dB gain (20Hz–20kHz): 78dB, 85dB
S/N ratio, RCA 40dB gain (20Hz–20kHz): 75dB, 83dB
S/N ratio, RCA 65dB gain (20Hz–20kHz): 69dB, 75dB

Features

Gain stage: Fully discrete J-FET & MOSFET input/output stages
RIAA equalization: Passive, zero feedback
Power supply: Seven-stage regulated balanced power supply
Front-panel controls: Gain, loading, mono, subsonic, mute, dim

Physical

Dimensions: 17" x 2.5" x 11.35"
Weight: 7 lbs
Construction: Brushed-aluminum panels with rigid steel frame

Adatok: mofielectronics.com; fotók: MoFi Electronics product page · frissítve: 2026-10-13 · Hibát találtál? Írj nekünk