Pass Labs

Reference High End phono preamplifier Pass Labs XS Phono offers compatibility with wide variety of phono cartridge and ultimate sound quality.

Pass Labs XS150 followed by deployment in Nelson's First Watt designs, circuit modification captured the unique tube-like sonic footprint of SITs from much higher-output MOSFET devices used in the Xs series.

As you can see from the model index, the new product is based on the previously released HPA-1 - now Pass Labs HPA-1c offers more accurate wide bandwidth and a direct coupled MOSFET output stage.

The Xs 300 operates in pure Class A and produces 300 watts of power into an 8 ohm load. The gain is 26 dB, providing a very clean and rich sound. Balanced XLR and unbalanced RCA inputs are available for connection. In active mode, the device consumes a solid 900 watts, which reflects Class A and the status of a powerful amplifier.

The Pass Labs XA 200.8 is a Class A mono amplifier with 200 watts at 8 ohms and 400 watts at 4 ohms. It provides a frequency range of 1.5 Hz–100 kHz, a gain of 26 dB and a damping factor of 200. It has very low distortion (1%) and a high power reserve for complex music.

The Pass Labs XA160.8 is a powerful Class A mono amplifier with an output power of 160 watts at 8 ohms, a gain of 26 dB and a frequency range of 1.5 Hz–100 kHz. Equipped with 72 MOSFETS, it provides low distortion, high damping (200) and high input impedance (50/100 kOhm). It weighs 123 pounds and measures 19×21.5×11 inches. It is ideal for transmitting lively, detailed and deep music with powerful attacking sound and excellent musicality.

The Pass Labs XA100.8 is a Class A mono amplifier with a power of 100 watts at 8 ohms, a gain of 26 dB, a frequency range of 1.5 Hz–100 kHz and a damping of 200. It has balanced and unipolar inputs, low noise and provides a realistic scene and dynamics.