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iFi Audio ZEN Phono - Phono Stage Pre Amplifier
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.
Features:
- MM/MC from 36dB >72dB gain. Super-silent noise floor -151dBV
- Precise RIAA with Balanced output, performance comparable to +$1k phono stages
- AI sub-sonic filter. Addresses warp without eliminating bass or causing phase issues
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Technical Specification
- Gain settings:
- MC (v lo): 72dB (+/- 1dB)
- MC (lo): 60dB (+/- 1dB)
- MC (hi): 48dB (+/- 1dB)
- 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
- SE: 100 Ohm resistive
- Input impedance:
- MM: 47K Ohms
- MC High: 47K Ohms
- MC Low: 1.4K Ohms
- 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)
- 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:
- 158 x117 x35 mm
- 6.2" x 4.6" x 1.4"
- Power Supply: DC 5V / 500mA
- Net weight: 515g (1.14 Ibs)
- Warranty: 1 Year
What Is In The Box
- iFi Audio ZEN Phono - Phono Stage Pre Amplifier
Videos
Manufacture Description
Hissless whisper
Flagship phono amplifiers create their own power supply off the mains, like a mains regenerator. This is fundamental to a well-designed phono stage. Without this, it will struggle to amplify the signal without added noise. This is why phono stages ‘hiss’ so annoyingly.
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.
Just super clean +/- 12V DC.
Measured EIN (Equivalent Input Noise) is -151dBV. It is 20dBV quieter than some Stereophile Class A+ phonos which are -131dBV.
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.
Scroll down for more on the most consequential circuit highlights/boutique components.
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.