Parasound Halo A 21+

Parasound's 71-pound Halo A 21+ delivers a whopping 300 watts per channel, and it's stable enough to drive just about any speakers you might care to hook up. This amp is an improvement upon the company's original Halo A21, which was a popular choice among audiphiles during its own 15-year run. This newer "plus" version has a refined new look, and offers more power and improved specs almost across the board. The large toroidal transformer inside Parasound's Halo A 21+ amplifier delivers a mighty 300 watts per channel of clean power. In bridged mode, the A21+ really turns on the firehose, putting out an amazing 1,000 watts into a single channel. All that power comes from a beefy toroidal transformer and a high-bias Class A/AB amplifier design that help your system reproduce music with stunning clarity and accuracy. You don't see a Class A/AB amplifier 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 an...