Fonolab QVATTVOR Mono – Dedicated Monophonic, Fully Balanced Transmission, MC Step-up Transformer

QVATTVOR Mono is the only fully balanced, mono-only step-up transformer in the QVATTVOR series, designed exclusively for high-end monophonic analog playback. Equipped with a dedicated mode switch that supports both in-phase and anti-phase coil configurations, it always provides the correct electrical matching and optimal signal processing for your mono MC cartridge. The premium Tamura transformer and low-noise balanced XLR output focus the information embedded in monophonic recordings to a precise point.

Optimized entirely for monophonic playback

• "Full compatibility with both in-phase and anti-phase configurations" Mono MC cartridges come with coils wound either in-phase or out-of-phase. This unit correctly handles the difference with a dedicated mode switch, drawing out the cartridge’s original tonal balance without compromising absolute phase or energy. A solid monophonic image appears before you, free from phase errors or partial signal cancellation.

• "Tamura Transformer × Switchable 1:10 / 1:36 × Fully Balanced XLR Output" At the core is a premium Tamura transformer, offering selectable step-up ratios of 1:10 and 1:36. This provides optimal gain matching for a wide range of mono MC cartridge outputs. Low-noise XLR output in a fully balanced topology pairs ideally with high-end balanced MM/MC phono equalizers, delivering signal while maintaining appropriate cartridge loading.

• "Demagnetization function and ground lift provide long-term stability" Equipped with a built-in demagnetization function to maintain the core's long-term stability. Furthermore, the ground lift switch optimizes the overall system noise. From the pitch-black background, even the most delicate details of monaural recordings emerge unwaveringly.

In-Phase / Anti-Phase — Why the "Switch" Determines the Sound

Mono MC cartridges fundamentally handle signals differently depending on the internal coil configuration. The essence of the QVATTVOR Mono lies in correctly accommodating this difference with a single switch, extracting accurate phase and energy from any mono cartridge.

1. In-Phase and Anti-Phase — Two Coil Configurations

• In-Phase: Two coils generate the same signal with the same polarity. These cartridges require a configuration that directly sums the signals to maintain correct absolute phase and channel consistency.

• Anti-Phase: Two coils are wound or connected with opposite polarities. Without electrical correction before summing, phase errors or partial signal cancellation may occur.

The In-Phase / Anti-Phase switch optimizes transformer signal processing according to your mono cartridge design, ensuring correct polarity, full energy, and accurate tonal balance.

2. Uncompromising Architecture: Fully Balanced Design Dedicated to Mono Playback

• Floating Differential RCA Input: Although an RCA input, the signal is instantly lifted from the ground, ensuring true fully balanced processing within the transformer. Consistent symmetry is maintained from the entrance.

• Low-Noise XLR Balanced Output + Ground Lift: Balanced output can be taken via XLR, ideally connecting to high-end balanced phono stages. The ground lift switch minimizes hum noise and allows optimal grounding according to the system.

• Demagnetization Function: Removes magnetization from the transformer core, maintaining clear, unclouded sound over the long term.