SVPER QVATTVOR Utility True Balanced MC Step-Up Transformer with optional MM/MI Step-Up transformer module


Combining the strengths of the all QVATTVOR line and maintaining the transparency of the 4x4 Reference Model

was not easy: presented at High End Munich 2021, the fully balanced QVATTVOR showed the direction in which we began to move in maintaining a balanced form of the MC cartridge signal.


Simultaneously, over the past few years, thanks to many feedbacks, we have come to understand the need to expand nonstandard functionality and implement a number of solutions aimed at reducing vibrations and improving shielding in general.



As a result, the new SVPER QVATTVOR has got a damped robust steel housing, inside which, in addition to the quartet of fully balanced Step-Up transformers from the 4x4 Reference


Model can be installed an additional shielded module with unbalanced MM Step-Up transformer line with 1:2 ratio.


The Demagnetizer button is also brought to the front to easy to use. Heavy aluminum front panel with original solid sphere knobs on black glossy finish gives a clean stylish aesthetics.



True balanced configuration

New damped steel case

Two matched pairs isolated transformers in MC section selected by a quartet

A wide frequency range of 10Hz-120kHz and a very low distortion of less than 0.05% in the range of 20Hz-20kHz at 1mV input

Optional MM 1:2 Step-Up transformer module

Minimal internal wiring

Silver-plated Neutrik XLR sockets for balanced source

Gold-plated RCA phono sockets with Teflon insulation for two inputs and two outputs


Designed and manufactured in Czechia

Exterior design by Jan Snegov



Input impedance: 0-5 / 40 Ohms

Output impedance: 4k Ohms

Frequency response: 10Hz to 120kHz (+0.5dB–1.0dB)

Channel balance: within 0.5 dB

Ratio: 1:33 / 1:10

Phase characteristics: Within 10° (20Hz–50kHz)


Optional MM/MI module

DC Resistance (primary): 1000 Ohms

DC Resistance (secondary): 2000 Ohms approx

Frequency response: 5Hz to 100kHz (+-0.5dB)

Ratio: 1:2

fonolab has its own engineering department, so we can offer a wide range of bespoke front panel finishes.


If you have a prefered color scheme, we can produce your unique SVPER QVATTVOR Step-Up transformer design complimentary.


Contact your fonolab Dealer or Contact Us and let your imagination run wild.



Optional black case color and RCA only inputs SVPER QVATTVOR


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