Pass Labs XP-10 owner manual Description of Operation

Description of Operation

XP-10 Owner’s Manual

10 watts during operation. Please verify that the indicated voltage requirement of this preamplifier is consistent with the utility voltage at your location.

We have provided a standard IEC AC power cord that fits into the IEC 320 line receptacle at the rear of the preamplifier chassis. The preamplifier is equipped for operation with an earth ground provided by the users AC outlet. Do not defeat this ground. The chassis and circuit ground of the preamplifier is connected to earth through a power thermistor, which gives a ground connection for safety but helps avoid ground loop related noise issues.

There are a total of five inputs. Two of the five inputs are balanced XLR only. The other three inputs are single-ended only. There are two pairs of outputs available with identical gain structure. One pair Balanced, one pair single-ended.

Balanced inputs and outputs are via XLR connectors. Single- ended inputs and outputs are via RCA connectors. On the XLR connectors, pin 1 is grounded, pin 2 is the positive signal, and pin 3 is the negative signal. Left channel RCA connectors are marked with “L”. Right channel RCA connectors are marked with “R”. In a similar fashion balanced XLR inputs and outputs are marked with “L” for left and “R” for right channel.

The main outputs are located at the left-hand side (viewed from the rear) of the rear panel, two male XLR connectors, and two RCA connectors, “R” (right) and “L” (left). The RCA connector’s ground is in parallel with pin 1 of the XLR outputs and the RCA hot is fed from an independent summing junction that maximizes the X circuit benefits. The RCA, single-ended, outputs are buffered from the balanced outputs. You may use both the single ended and balanced outputs at the same time. On the XLR, pin 1 is ground, pin 2 is positive, and pin 3 is negative.

In application the XP-10s front panel controls and alphanumeric display are quite straight forward, and intuitive. We encourage you to become familiar with their operation prior to establishing any input connections with this unit. Experience indicates that engaging in a few minutes of exploration will add much to your ultimate enjoyment of this exceptional Pass Labs product.

The left most button on the front panel is Mute. Pressing this button toggles between mute on and mute off. Mute on removes signal from the output of the preamp.

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