Parasound Zphono XRM Phono Preamplifier

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. (1.8kg)
Shipping: 6.8 lbs. (3.1 kg)