Website:https://www.passlabs.com/
Est. year: 1991
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.
