MoFi Electronics MasterPhono Phono Preamplifier
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Created in collaboration with the revered audio engineer Peter Madnick, renowned for his exceptional contributions to the high-performance audio industry, the all-analogue MasterPhono preamplifier is a testament to his expertise. The mission behind the MasterPhono was unequivocal: to replicate the sonic integrity that characterizes the renowned MFSL vinyl reissues. Over a year of meticulous research, development, and prototyping was invested to meet this lofty goal.
MoFi Electronics MasterPhono Phono Preamplifier
One of the most remarkable aspects of the MasterPhono is its versatility. With separate inputs and balanced as well as single-ended outputs, this preamplifier offers a multitude of user-configurable settings, all intuitively accessible via the front panel. The analogue meters on the front panel embody the true essence of MasterPhono's analogue heritage. Notably, a USB input opens doors to future features and software updates, ensuring a forward-looking experience.
Current-mode (transimpedance) input stage, a fundamentally different approach to MC phono amplification.
Most phono stages load your cartridge against a fixed resistance. The MasterPhono presents a near-zero impedance input instead, which automatically optimizes cartridge damping, eliminates the guesswork of manual loading, and removes a major source of noise and distortion before it ever enters the signal path.
The result is what a great MC cartridge is actually capable of: tight, defined bass, an open and natural midrange, and transient dynamics that feel immediate and unforced. Less coloration. More record. No manual loading adjustments. The near-short circuit input automatically damps your cartridge correctly — regardless of its internal impedance. Plug in and play.
LOWER NOISE FLOOR
Operating at low impedance makes the circuit largely immune to cable capacitance and common RF interference, so what you hear is the signal, not the environment around it.
HIGHER ACCURACY
By avoiding high-voltage gain at the input stage, the MasterPhono introduces less distortion at the point where it matters most — keeping the signal linear from stylus to output.
OPTIMIZED FOR LOW-OUTPUT MC
Current-mode amplification is purpose-built for the low-impedance, low-output moving coil cartridges where the most musical information lives.
PRECISE INPUT FLEXIBILITY
Choose between standard signal input ("Voltage Input") via RCA & XLR or "Current input" tailored for low source-impedance phono cartridges, utilizing "Trans-impedance dynamic loading.
PERFECT LOADING
Find the perfect match for your cartridge with 10 switchable impedance loading adjustments, including a “Custom” via RCA plug on rear panel.
DUAL FUNCTION VU METERS
Dual meters can be used for monitoring or calibration of cartridge azimuth.
SPECIFICATIONS
Gain:
Selectable gain for MM or MC 40db, 50db, 60db, 70db
THD:
10mV@1KHZ MM low: 0.005% A-Weighted
10mV@1KHZ MM high: 0.005% A-Weighted
1mV@1KHZ MC low: 0.010% A-Weighted
1mV@1KHZ MC high: 0.013% A-Weighted
Loading:
15 Ohms, 30 Ohms, 50 Ohms, 75 Ohms, 100 Ohms, 500 Ohms, 1K Ohms, 10K Ohms, 47K Ohms+150pF, & “Custom”
Max Output:
@1% THD, 10 Volts RMS
RIAA Accuracy:
-+/- 0.05db
Frequency Response:
10Hz–50KHz ±0.20dB
Weight:
15 lb / 6.8 kg
ADDITIONAL FEATURES
• RCA/XLR: Voltage & Current inputs, Trans-impedance dynamic loading
• Dual-chassis: Power/Signal isolation, low noise, separate grounding
• Gain settings: 40/50/60/70dB, Impedance: 10 settings + Custom
• Fully discrete balanced circuitry, servo-controlled, DC-coupled, high pass filter
• Passive RIAA: Precise parts, NOS capacitors, accurate resistors
• Cascaded voltage regulation, ultra-low noise
• Remote controlled: Input, gain, mute, mono, meter, subsonic filter
• Dual Function VU meters for monitoring or cartridge calibration
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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