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Pass Labs XS Preamplifier

This large, dual-chassis preamplifier is built in true dual-mono arrangement. Each channel has its own power supply board with over 100,000uf of capacitance for unfettered transient response. Noise levels have been dropped from the already low-noise XP30. Refined circuit design and layout, new gain-stages with auto-bias and DC compensation all combine for optimal performance. But it all comes down to sound; once you listen to the Xs preamplifier, there is no going back.

Ultra High-End Preamp

When we began development of the Xs power amplifier five years ago, we knew that we would also need a companion piece.

We were given “carte blanche” on the design and an unlimited budget, the result of this is the Xs Preamp.

True “dual-mono” design
only component shared between channels other than casework, being the AC power connection to house power

Control section
includes its own regulated power supply

Minimal noise

Negligible channel to channel “cross-talk”

 

SPECIFICATIONS

Overall Gain  =  -89.5 dB to +9.5 dB
Volume Steps  =  99
Remote  =  Yes
Inputs  =  6
Outputs  =  4
Frequency Response  =  -3dB @ 2 Hz and 60 kHz
Input Impedance  =  42k balanced
Output Impedance  =  120 Ohm bal, 120 Ohm SE
CMRR  =  -65 dB, 1 kHz
Cross-talk  =  -100 dB, 1kHz Ref 1V
Signal to Noise Ratio  =  < -110 dB, Ref 5V
Power Consumption (W)  =  55
Number of Chassis  =  2
Dimensions, Each Chassis  =  19”W x 14”D x 6.25”H
Weight (LBS)  =  80
Shipping Box Dim  =  24 x 19 x 23
Shipping Weight (LBS)  =  90