Overview

Since 1997 Pass Laboratories has been respected for building some the finest phone stages in the audio industry. The transition from Aleph Ono, through X-0no and now to the XP-15 and XP-25 represents a sophistication and maturation of both thinking and component evolution.

Each new design of that evolution has brought a steady improvement in measured metrics such as diminished background noise and has contributed to a sonic image presented with improved resolution and additional sonic ease.

The popular advent of the moving coil cartridge demanded all this as well as higher available gain. Each successive generation of Pass Laboratories phono-stage has addressed the special needs of these cartridges, while maintaining the ability to bring out the best in more conventional high output moving magnet cartridges as well.

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About the brand

Based in Foresthill, California, USA, Pass Labs was founded by Mr. Nelson Pass, a well known figure in the high end audio community.

Although Pass Labs has only been around for a decade, they have collected more awards than many companies who have been around a lot longer.

Mr. Pass is known for unique and innovative, as well as practical, circuit designs. Pass' first designs, in the Aleph line, were single-ended pure Class A solid state. The current Pass Labs "X" series amplifiers use a distortion canceling balanced audio signal circuit, and continue to receive critical acclaim. Today Pass Labs makes amplifiers, preamplifier and speakers.

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