Regenerative power supply

High-end phono preamplifiers create their own power supply off the mains, like a main regenerator. This is the starting point for any good phono stage, since without it it would be difficult to amplify the signal and not add noise.

The Zen Phono uses this regenerative power supply concept to provide excellent audio performance. It creates a 1.2MHz power supply, i.e. 20,000 times the frequency delivered by your home electrical network. Thus, a 10µF filtering capacitor is equivalent to 200000µF at a lower frequency. The result: a large filtering capacity comparable to the LC filtering of tube amplifiers. The power supply is insulated against interference and outputs an extremely clean +/-12V DC signal.

RIAA EQ

The Zen Phono integrates a particularly efficient RIAA equalization circuit, using latest generation AOPs and TDK C0G capacitors in parallel. This design exponentially increases the tolerance of the RIAA equalizer to ±0.15dB.

AI Subsonic Filter

Classical sub-sonic filters suppress "buzzing" but also alter the reproduction of low frequencies. iFi Audio's AI Subsonic Filter, used since 2012 and therefore totally proven, only cancels this humming effect, without impacting the bass.