Pass Labs
AmplifiersPreamplifiers & phono stages
| Country | United States |
|---|---|
| Founded | 1991 |
| Founder | Nelson Pass |
Pass Labs is an American amplifier company based in California, founded in 1991 by Nelson Pass, who had earlier co-founded Threshold. Pass is one of the most respected amplifier designers in the industry and is known for simple, class-A circuits with few gain stages. Pass Labs' Aleph amplifiers of the 1990s were single-ended class-A designs, and the company went on to develop its patented "Supersymmetry" topology in the X series, followed by the XA class-A power amplifiers, the XP preamplifiers and phono stages, and the very large XS monoblocks. Integrated amplifiers such as the INT-25 brought the same approach to a single box. Pass Labs' products are known for warm, natural and effortless sound and for their large heatsinks and blue power meters. Nelson Pass has also shared many designs openly with the DIY community through his separate First Watt company and published articles. Its amplifiers are known for their reliability and long service lives.
Notable Pass Labs products
- Aleph series
- X series
- XA series
- INT-25 integrated
- XP preamplifiers
- XS monoblocks
More about Pass Labs
Pre, Power, DACs and Phono Stages for the discerning. Passlabs X0 The X0 is a line stage preamplifier system housed in three separate chassis, with two chassis devoted to analog gain stages and one for power supply and digital control circuitry. Passlabs X1 The X1 is a line stage preamplifier system housed in a single chassis with an external power supply. Digital and analog power supplies are completely independent.
Passlabs X350 350 watt stereo amp The X350 utilizes the Supersymmetry ™ circuit topology developed by Nelson Pass and patented by Pass Labs. The X350 utilizes the same face plate, meter, and power supply as the X600. Passlabs X600 600 watt mono block The X600 is the second in a series of high power amplifiers to utilize the Supersymmetry ™ circuit topology developed by Nelson Pass and patented by Pass Labs. The X600 utilizes the same face plate, meter, and front end board as utilized in the larger X1000
Sources: en.wikipedia.org