Power Amplifier Reviews

Performance
Features
Ergonomics
Value

AT A GLANCE
Plus
Outstanding dynamics and headroom
Equal power to all channels
Seven-year transferable warranty
Minus
Very, very heavy
Recommended for two independent 20-Ampere power outlets

THE VERDICT
This amp never broke a sweat driving my 4-ohm speakers at insanely loud levels.

There are quite a few people in the audio world who have become household names, at least among audiophiles. I’m talking about legends like Paul Klipsch, Amar Bose, Saul Marantz, Henry Kloss, Bob Carver. But these aren’t the only influential contributors to the business and history of hi-fi. Among the lesser-known audio icons is Morris Kessler, the founder of ATI.

"You test … amplifiers?" the lovely brunette MBA said to me from across the couch in the lobby of a hipster L.A. hotel. Sadly, my reply - "There are people who care about this stuff!" - didn't convince her of the value of my work. On some level, though, I'm in sympathy with her sentiment. While I do, on occasion, test amplifiers, I'm really a speaker and headphone reviewer.

We’ve all heard the old saying, “less is more”, but that doesn’t always translate well to audio surround processors. While audiophile processors of yesteryear concentrated more on core components for the best possible sound quality and less on crazy surround modes and other digital processing, today’s market seems to demand these features.

SP3 Surround Processor
Audio Performance
Video Performance
Features
Ergonomics
Value
 
9B SST² Amplifier
Performance
Features
Ergonomics
Value

If you’ve ever spent an afternoon at a big-box store courting eye strain and knee pain comparing the lineup of AVRs, then you’ve doubtless discovered that, superficially at least, the offerings have more in common than not. Sure, the more you spend, the more buzzwords are silk-screened across the front panel, the more HDMI connections you find around back, and, when it comes to power, the more exaggeration you get. One thing about Bryston and power—it’s not within theirs to lie. My first audiophile speakers, Magnepan MG-IIIa speakers, didn’t turn amazing until they met a Bryston 4B amp. If current is what your speakers crave, a Bryston amp could be their best friend.

Halo P 7 Multichannel Preamplifier
Performance
Features
Ergonomics
Value
 
A 51 Multichannel Amplifier
Performance
Features
Ergonomics
Value
 
JC 1 Single-Channel Amplifier
Performance
Features
Ergonomics
Value

One of the few lessons that was ingrained into me during my time in the Navy was, “Keep it simple.” I admit it wasn’t phrased quite so politically correctly, but the point is still the same. It’s a motto I apply to just about everything I do in my daily life, and when I received the Parasound Halo P 7 multichannel preamplifier ($2,000) for review, it appeared that Parasound sticks to the same philosophy. The strictly analog preamp shrugs off digitaldecoding duties to your source components, shunning any dirty digital processing while providing a high-end, multichannel, analog preamp stage to feed into your amps. With the right front-end source components, this makes for a spectacular two-channel and multichannel listening experience.

I am of the school that believes that more power is always better than less power. That school also professes that amplifiers, while operating within their linear abilities (a big “if”), are not generally distinct in their sonics.

Few audio companies are as closely associated with a single individual as Pass Laboratories is with its founder Nelson Pass, a man who has always blazed his own path when it comes to designing audio gear. Pass founded Threshold Electronics back in the early 1970s, but when he wanted to explore new, simpler circuit topologies in the early 1990s, he created Pass Labs as a way to market his latest creations.

The two integrated amps in the Pass Labs line, the INT-150 and INT-30A, are a good example of his less-than-conventional approach, seeing as both appear to be  identical except for the critical question of output power. Physically the two amps are indistinguishable, with exactly the same functions, weight, dimensions, and even price tag. It's only when you take a peek at the spec sheet that the differences become apparent, with the INT-150 delivering a healthy 150 watts per-channel, while the INT-30A tops out at just one-fifth that amount.

So what gives? Why would anyone buy an inline four when they're offering you the V-12 for the same money?