MoFi Electronics MasterPhono Phonostage

Color
AVMENTOR.NET

"You may hear new details for the first time, thanks to the MasterPhono’s ultra-low noise floor, which allows it to effortlessly reproduce macro-dynamic profiles andcreate an imposing presence in the room, presenting details in just the right way. The tonal balance is beyond reproach.”

- Dimitris Stamatakos
PartTime Audiophile

“If you’re in the market for a reasonably affordable piece of analog electronics, I encourage you to start with this phono stage aptly named the Master. At its price point, I just can’t think of a better buy than the MoFi MasterPhono.”

- Garrett Hongo
The Tracking Angle

“The made in America MoFi MasterPhono is among the most versatile, easy and fun to use phono preamp available today and it’s also among the most pleasing sounding for its price and well beyond. Highly recommended.”

- Michael Fremer

MASTERPHONO

Created in collaboration with the revered audio engineer Peter Madnick, renowned for his exceptional contributions to the high-performance audio industry, the all-analog 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.

ELEVATING VINYL PLAYBACK WITH PRECISION ENGINEERING

Created in collaboration with the revered audio engineer Peter Madnick, renowned for his exceptional contributions to the high-performance audio industry, the all-analog 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.

VERSATILE INPUTS, INFINITE SOUNDSCAPES

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 analog meters on the front panel embody the true essence of MasterPhono's analog heritage. Notably, a USB input opens doors to future features and software updates, ensuring a forward-looking experience.

Less coloration. More record.

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.

What that means in practice:

No manual loading adjustments. The near-short circuit input automatically damps your cartridge correctly — regardless of its internal impedance. Plug in and play.

A BETTER PHONOSTAGE.
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.

"Even with 45 years of experience, I'm excited to work with MoFi on a project like this —something unique, designed, and built in America — that provides high-end performance for people who love music and vinyl. I sincerely hope you get to experience MasterPhono yourself."

- Peter Madnick

SPECS & FEATURES

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

Warranty:
Five years parts & labor

FEATURES

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

DOWNLOADS

MasterPhono Manual

MasterPhono VU Meter Calibration Quick Guide