Pass Labs Debuts Two New Models: XP-22 Preamp & XP-27 Phono

We are constantly working on and listening to new things and increasing our knowledge of circuits and components on sound. Eventually we find some things worth putting into production because they are significant enough. That time has come with a new series of preamplifiers.

Replacing the XP-20 Preamplifier that was introduced in 2008, the new XP-22 uses double shielded, low-noise toroidal transformers in an external supply connected via aviation-grade circular connectors using silver over oxygen-free copper. The power supply is dual mono, with two transformers offering lower radiated and mechanical noise. Noise is the most prominent part of THD+N at low levels, so by lowering noise we get better resolution and dynamics.

The gain circuitry continues to use our favorite transistors from Toshiba but has a larger, higher-biased, output stage like the Xs Preamp, and includes auto bias. The larger output stage makes longer, and multiple cable runs easier to drive and gives us the advantage of simplifying our single-ended output circuitry while increasing performance.

The volume control is a single stage instead of two stages and has more range; it is quieter and more accurate. This is the same volume control as used in the XP-30.

Overall this makes for a quieter, more neutral, musical and versatile control center for your system. Suggested Retail Price: $9,500.

The XP-22 measures spectacularly well — but it really stands out sonically.

The twin-chassis XP-27 Phono Preamp eclipses the already exceptional performance of the well-reviewed and well-received XP-15, XP-25 (introduced in 2010) & XP-17: delivering enhanced RIAA performance at a fraction of the previous distortion.

The new design uses double-shielded, low-noise toroidal transformers in an external supply, connected via aviation-grade circular connectors using silver over oxygen-free copper. The power supply is dual mono with two transformers with lower radiated and mechanical noise. Noise is the most prominent part of THD+N at low levels, so by lowering noise we get better resolution and dynamics.

The XP-27 input and gain circuitry are similar to that found in the Xs Phono. This means switching and loading is done at higher signal levels, minimizing noise and improving low level performance.

Suggested Retail Price: $11,500.

XP-22 SPECIFICATIONS
Power consumption 40 watts
Gain 9.6dB Balanced, 3dB single-ended.
Output Impedance: 25 Ohms RCA, 50 Ohms XLR
Input Impedance: 22K Ohms
Frequency response: +/- 0.05 dB 10Hz to 20KHz
-2dB @ 150KHz
Crosstalk 100dB
THD < 0.001 @ 1V 1Khz
Max out 33V RMS 0.1%
Residual Noise 2uV RMS, SN -125dB ref max out
Dimensions: 17”w x 12.5”d x 4”h each chassis
Weight: 55LBS

XP-27 SPECIFICATIONS

Gain 53dB, 66dB, 76dB
RIAA response +/- 0.1 dB 20-20KHz
Distortion < 0.005 % @ 1mV MC input
<0.002 % @ 10mV MM input
Max out 22V RMS
Output Impedance: 200 ohms
Input Impedance: 100pF – 750pF on any input
30 ohm – 47K ohm on any input
Unweighted Noise -93 dB ref 10mV (MM)
-85 dB ref 1mV (MC)
Power consumption 50 watts
Dimensions: 17”w x 12.5”d x 4”h each chassis
Weight: 55LBS