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Nelson Pass has been designing audio electronics since about 1971, first with ESS remember Heil transformers?, and then forming a new company, Threshold in 1975. Threshold pioneered the design of high power Class A power amplifiers and later, high power amplifiers using only local feedback the Stasis series
We start with simple FET circuits already having low distortion and noise, and arrange them in two symmetrical halves. The two halves of the amplifier channel are closely matched, eliminating a large portion of distortion and noise without feedback. A small amount of feedback is also applied, not so much for the purpose of reducing distortion but to make the distortion as identical as possible on both polarities of the balanced output
Tel 530 367 Fax 530 367 Pass Labs PO Box
SET UP
The amplifier’s voltage and current rating are indicated on the rear panel. It will be either 240 volts, 230 volts, 220 volts, 120 volts or 100 volts. The larger amplifiers have a circuit breaker of the appropriate capacity. The smaller power amplifiers use a slow- blow 3AG type fuse. The frequency rating of the AC line source is 50 to 60 Hz. Please verify that the amplifiers indicated voltage requirements are consistent with the supplied voltage and current at your location
So the amplifier is sitting there unconnected
You are ready to play music
Product Life
Interconnects and Speaker Cables
Pass Laboratories PO Box 24449 Foresthill Rd
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Warranty Information
Water and moisture Electrical devices should not be used near water as per example, near a bathtub, washbasin, kitchen sink, laundry tub, wet basement or swimming pool . Care should be taken such that objects do not have the opportunity to fall, and that liquid is never spilled onto or into the device enclosure through openings
