FM266 Fully Balanced Stereo Preamplifier – Hi-Fi Audio

Each left and right channel uses an independent 50W imported toroidal transformer for maximum separation and zero crosstalk performance. Two single-ended inputs + two balanced inputs, two single-ended outputs + two balanced outputs, supporting simultaneous connection of up to four independent dual-channel power amplifiers.

Ultra-low total harmonic distortion (THD) of 0.0005%, a signal-to-noise ratio (SNR) of 117dB, and a completely flat frequency response of 20Hz-20kHz deliver neutral, delicate, and extremely smooth sound reproduction.

Manufactured with high-quality discrete components and top-tier audiophile-grade materials, undergoing over 72 hours of burn-in, and 100% hand-soldered using American ALPHA solder.

Supports manual and remote volume adjustment via the ALPS 27 high-precision potentiometer.

The dual independent mainboard design ensures complete separation of the left and right channels, eliminating all inter-channel interference and achieving an ultra-low -116dB crosstalk—a feat unattainable by ordinary preamplifiers. All signal paths utilize high-purity Taiwanese Teflon oxygen-free copper and single-crystal copper wire, paired with CMC high-quality pure copper RCA terminals and US standard balanced XLR connectors, ensuring zero signal loss.

Each unit undergoes over 3 days of continuous burn-in before leaving the factory, ensuring you enjoy perfectly tuned sound quality right out of the box. The robust CNC-machined all-aluminum chassis eliminates all external EMI interference, presenting a high-end, minimalist look that blends perfectly into any desktop or living room HiFi setup, delivering natural, balanced, and incredibly detailed sound that will satisfy even the most discerning audiophiles.