Parasound Halo A 31 Black 250 wpc x 3 power amplifier

Plenty of power for your front speakers The front left, right, and center speakers do most of the heavy lifting in your sourround sound system, and Parasound's Halo A 31 three-channel power amp has the juice to drive them very well. This 65-pound dynamo delivers 250 watts per channel with all three channels driven, and it's stable at very low impedances, so it's compatible with a very wide range of speakers. With its sheer power - and thoughtful circuit design courtesy of Parasound's audio guru John Curl - this amplifier delivers impressive volume, clarity, and dynamics with your surround sound speaker system. Each channel features an unbalanced RCA and a balanced XLR input, with individual gain knobs with a -6/+6dB attenuation range. The amp offers three power-up options: manual, signal-sensing, and 12-volt trigger. Class A/AB operation for smoother sound The A 31 uses a Class A/AB power circuit. You don't see an amplifier described that way every day, so let's break down the benefits. Engineers and audiophiles generally agree that Class A designs offer the purest sound, but they tend to run hot and take up a lot of space. As a result, home audio amplifiers often use a compromise known as Class AB , which hands off part of the audio signal to a different set of output transistors at high power levels. AB can sacrifice a bit of signal purity, but it lets the amp run cooler and more efficiently. So this Class A/AB amp operates in pure Class A mode up to a higher power level than most other amplifiers in its price category, before the second set of transistors kick in. The result is a sound that's smoother, less fatiguing, and more natural. The legacy of John Curl The A 31 features circuitry designed by John Curl, a legend in audio engineering. He started his career in the 1970s, designing tape and video recorders at Ampex, and he had a hand in building the Grateful Dead's famous Wall of Sound. Curl has worked with Parasound since 1989, designing all of their high-pow