Power Amplifier Reviews

Sort By:  Post Date TitlePublish Date
Michael Fremer  |  Nov 02, 2012
Performance
Features
Ergonomics
Value
Price: $3,500 At A Glance: Enormous power output • Remarkably compact • Class D

Class D amplification has a narcotic-like hold on the audio electronics industry. These switching-mode designs mesmerize with a dazzling array of advantages: high efficiency, high power output, low weight, compact dimensions, and depending on implementation, enormous cost savings.

Daniel Kumin  |  Apr 10, 2012

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.

Michael Trei  |  Feb 22, 2012

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?

uavGary Altunian  |  Oct 17, 2008
I love big, beefy power amplifiers for the same reason I enjoy high-performance automobiles. An economy car will get me to my destination, but it's just not as much fun.
uavGary Altunian  |  Sep 22, 2008
A power amplifier is the last electronic component in the audio chain—well, next-to-last if you count the speakers—and it has several important tasks. It must amplify a very small audio signal without changing the signal's characteristics, it must precisely control each speaker in the system, and it must instantaneously deliver adequate voltage and current to each speaker on demand. As such, the power amp is where the rubber meets the road.
uavKim Wilson  |  Aug 20, 2008

In the world of cars, any make and model will get you where you need to go. Some will get you there faster, and others will get you there in style. However, only a select few exude an air of sophistication and grace.

David Vaughn  |  Aug 01, 2008

Performance
Features
Ergonomics
Value
You've probably never heard of a company called Wyred 4 Sound. Neither had I until I was offered the opportunity to review one of its multichannel power amps for UAV. W4S is a California-based company whose goal is to design, engineer, and manufacture high-end audio products with audiophile performance at affordable prices.
Jerry Kindela  |  Jul 23, 2007
Pushing the technology envelope.

Founded in early 1972 by Ivor Tiefenbrun, Scottish manufacturer Linn Products has consistently been on the cutting edge of audio development and delivered products that have enamored many audiophiles. Just think of the Linn Sondek LP12 turntable, the Sondek CD12 compact-disc player, or even the Komponent speaker system that Michael Trei reviewed in these pages (in the March 2006 issue). Linn has routinely pushed the boundaries and treaded ahead of the manufacturing pack. Case in point: the Chakra range of amplifiers, which rely on switch-mode power supplies, plus other proprietary developments on the audio-circuit side.

 |  Sep 07, 2006

<IMG SRC="/images/archivesart/outlaw7700.jpg" WIDTH=450 HEIGHT=205 BORDER=0>

 |  Sep 07, 2006

<IMG SRC="/images/archivesart/outlaw7500.jpg" WIDTH=450 HEIGHT=203 BORDER=0>

Ultimate AV Staff  |  Jul 10, 2006

<UL CLASS="square">
<LI>Price: $2,500</LI>
<LI>Channels/Power: Five channels; 250-Watts into 8 ohms/385-Watts into 4 ohms </LI>
<LI>Inputs: Single-ended</LI>
</UL>
<IMG SRC="/images/archivesart/706parasound5250.jpg" WIDTH=450 HEIGHT=245 BORDER=0>

 |  Jul 10, 2006

<UL CLASS="square">
<LI>Price: $7,600</LI>
<LI>Channels/Power: Seven channels; 200-Watts per channel into 8 ohms</LI>
<LI>Inputs: Single-ended and balanced</LI>
</UL>
<IMG SRC="/images/archivesart/706macmc207.jpg" WIDTH=270 HEIGHT=175 BORDER=0>

Ultimate AV Staff  |  Jul 10, 2006

<UL CLASS="square">
<LI>Price: $5,000, $5,500 and $6,000, respectively for five, six and seven channels</LI>
<LI>Channels/Power: 5/6/7 channels; 125-Watts per channel into 8 ohms/250-Watts into 4 ohms</LI>
<LI>Inputs: Single-ended and balanced</LI>
</UL>
<IMG SRC="/images/archivesart/706krellshowamp.jpg" WIDTH=450 HEIGHT=205 BORDER=0>

Pages

X