A Versatile Phono Preamp

The Parasound Zphono XRM offers two separate input stages — one for a turntable with a moving magnet cartridge, and one for a moving coil cartridge — so you can connect two 'tables simultaneously. The MC stage offers variable load impedance, allowing precise cartridge loading to match high- or low-output MC cartridges. Both inputs offer switchable gain.

The front panel also has a defeatable 40Hz high-pass filter that helps eliminate subsonic rumble, and a stereo/mono switch that can particularly come in handy when playing older records. The back panel includes unbalanced stereo RCA outputs, and balanced stereo XLR outputs for a more secure connection and superior noise rejection. 

Features

- Dual inputs for two turntables ( 1 MM & 1 MC )

- Front panel input select switch

- Front panel mono/stereo mode switch

- Front panel rumble filter switch

- Balanced and unbalanced outputs

- Variable MC impedance adjustment of 50-1050 ohms

- MM Gain options of 40 dB or 50 dB unbalanced ( 46 dB/56 dB balanced )

- MC Gain options of 50 dB or 60 dB unbalanced ( 56 dB/66 dB balanced )

- RIAA accurate to within 0.2 dB

- Ultra-low distortion ( <0.02% THD )

- Ultra high-speed, low-noise opamps

- Audiophile grade resistors and capacitors

- Gold-plated RCA input and output jacks

- Unique half-rack width chassis; 1 rack space high

Parasound Zphono XRM Phono Preamplifier User's Manual

Specifications

Frequency Response: 20-20 kHz, +/- 0.2 dB

Total Harmonic Distortion: 0.02% at 1 kHz

Signal to Noise Ratio, MM 40 dB Setting 
> 94 dB, input shorted, IHF A-weighted 
> 90 dB, input shorted, unweighted

Signal to Noise Ratio, MM 50 dB Setting
> 94 dB, input shorted, IHF A-weighted 
> 90 dB, input shorted, unweighted

Signal to Noise Ratio, MC 50 dB Setting
> 92 dB, input shorted, IHF A-weighted
> 88 dB, input shorted, unweighted

Signal to Noise Ratio, MC 60 dB Setting
> 82 dB, input shorted, IHF A-weighted
> 80 dB, input shorted, unweighted

Inter-channel Crosstalk: > 80 dB at 1 kHz

Input Impedance
MM: 47k Ω
MC: 50-1050 Ω

Output Impedance 
Unbalanced: 150 Ω 
Balanced: 150 Ω per leg

Input Sensitivity at 1 kHz, 4mV Input
40 dB: 5 mV for 500mV output 
50 dB: 5 mV for 1.5 Volts output
60 dB: 5 mV for 3 Volts output

Input Sensitivity at 1 kHz, 1V Output
40 dB: 10 mV for 1.0 Volt output 
50 dB: 3.5 mV for 1.0 Volt output
60 dB: 1.8 mV for 1.0 Volt output

Total Gain
40 dB / 50 dB / 60 dB ( unbalanced output )
46 dB / 56 dB / 66 dB ( balanced output )

Rumble Filter: 40 Hz high pass, 18 dB /oct.

AC Power Requirement
Standby: 0 watts
Power On: 7 watts
115 VAC or 230 VAC 50 - 60 Hz
(Selected on bottom)

Dimensions
Width: 8.5" ( 220 mm ) 
Depth: 10" ( 254 mm )
Depth: 12" ( 305 mm ) - cables connected
Height, with feet: 2" ( 51 mm ) 
Height, without feet: 1.75" ( 45 mm ), 1U

Weight
Net: 3.9 lbs. ( 1.8 kg ) 
Shipping weight & dimensions: 6.8 lbs. ( 3.1 kg ), 12.5" x 14" x 7"

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