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iFi Audio ZEN Phono - Desktop Phono Stage Preamp

  • Compatible with moving magnet and moving coil phono cartridges
  • Unbalanced stereo RCA input and output
  • OV series op-amps and Panasonic ECPU and TDK C0G capacitors
  • Ultra-wide gain from 36dB to 72dB
  • AI subsonic filter intelligently removes rumble without sacrificing bass response
  • Manufacturer warranty: 12 months
  • iFi Audio ZEN Phono

    You’ve spent years building your dream LP collection. We know because we have done the same! The ZEN Phono is a wonderful enhancement to your vinyl setup. It will max out every MM/MC cartridge. Choc full of AMR/iFi trickle-down vinyl technology, it will have you poring over your LPs into the wee, small hours.

    Unlike any other entry-level phono stage. The ZEN Phono has MM/MC from 36dB >72dB gain, Super-silent noise floor -151dBV and precise RIAA with Balanced output, performance comparable to +£1k phono stages. AI sub-sonic filter addresses warp without eliminating bass or causing phase issues.

    Pedigree. Performance. Peerless.

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    Hissless whisper
    Unusually, the ZEN Phono has its own high-tech clean power supply. It creates a 1.2MHz power supply (20,000x mains frequency of 60Hz). In this circuit, a 10uF filtering capacitor = 200,000uF at lower, audible frequencies. With serious levels of noise filtration, it performs at the level of well-designed LC filtering circuits as found in classic tube amplifiers. Further, located on its own ‘island’ PCB, it is isolated so there is no noise pollution of the analogue stage.

    Mil-spec RIAA
    The EQ circuit uses multiple TDK C0G capacitors in parallel. This is for best stability and the least distortion. They beat polystyrene capacitors and are close to Teflon. Read more here. Already using the lowest tolerance capacitors combined with multiples in parallel, tolerance is exponentially improved by the square root of the number of capacitors. The RIAA EQ tolerance level (+/- 0.15dB) is impressive as it is en par with hand-selected capacitors.

    With great circuit comes great components
    The ZEN Phono has some seriously good audio components backing up the fab circuit design which has trickled-down from its ultra-fidelity AMR PH-77 and iFi iPhono siblings.

    Super sub-sonic
    The intelligent sub-sonic filter is from the iPhono range and is quite special. Normal sub-sonic filters remove ‘rumble’ AND bass and cause phase issues. Our unique AI phono sub-sonic filter removes ‘rumble’ only.

    Features

    • Compatible with moving magnet and moving coil phono cartridges
    • Unbalanced stereo RCA input and output
    • OV series op-amps and Panasonic ECPU and TDK C0G capacitors
    • Ultra-wide gain from 36dB to 72dB
    • AI subsonic filter intelligently removes rumble without sacrificing bass response

    Package Includes

    • iFi Audio ZEN Phono
    • Power Adapter
    • RCA Cable
    • User Manual
    • Instruction card

    Technical Specifications

    • Gain settings MC (v lo): 72dB (+/- 1dB)
    • Gain settings MC (lo): 60dB (+/- 1dB)
    • Gain settings MC (hi): 48dB (+/- 1dB)
    • Gain settings MM: 36dB (+/- 1dB)
    • AI Sub-sonic filter (Remedies only the 'warp' in LPs): No negative impact to bass response
    • Max Output Voltage (RMS): 20v RMS bal output into 100k (< 1% THD & N); 13.5V RMS bal output into 600R (< 1% THD & N)
    • Output Impedance BAL: 200 Ohm resistive
    • Output Impedance SE: 100 Ohm resistive
    • Input impedance MM: 47K Ohms (Load: 110pF)
    • Input impedance MC High: 47K Ohms
    • Input impedance MC Low: 1K Ohms
    • Input impedance MC V Low: 110 Ohms
    • Signal/Noise Ratio: 94dB(A) MM re 2V BAL/1V UNBAL; 80dB(unweighted 80kHz BW) MM re 2V BAL/1V UNBAL; 84dB(A) MC Hi re 2V BAL/1V UNBAL; 71dB(unweighted 80kHz BW) MM re 2V BAL/1V UNBAL; 90dB(A) MC lo re 2V BAL/1V UNBAL; 79dB(unweighted 80kHz BW) MC lo re 2V BAL/1V UNBAL; 79dB(A) MC vlo re 2V BAL/1V UNBAL; 69dB(unweighted 80kHz BW) MC vlo re 2V BAL/1V UNBAL
    • EIN (equivalent input noise) 0.6nV|/Hz (unweighted) MC lo/vlo: -151dBV (A weighted); -141dBV (unweighted)
    • EIN (equivalent input noise) 6.5nV|/Hz (unweighted) MM/MC hi: -130dBV (A weighted); -119dBV (unweighted)
    • Harmonic Distortion: <-110dB / 0.0003% MM re 2V BAL/1V UNBAL; <-80dB / 0.01% MC lo re 2V BAL/1V UNBAL; <-86dB / 0.005% MC vlo re 2V BAL/1V UNBAL
    • Dimensions: 160(l) x 113(w) x 35(h) mm (6.3" x 4.4" x 1.4")
    • Power Supply: DC 5V / 500mA
    • Net weight: 515g (1.14 Ibs)
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