“Let our rigorous testing and reviews be your guidelines to A/V equipment – not marketing slogans”
Facebook Youtube Twitter instagram pinterest

Axiom Audio A1400-8 Digital Multi-Channel Amplifier Review

by April 14, 2009
  • Product Name: Axiom Audio A1400-8 Digital Multi-Channel Amplifier
  • Manufacturer: Axiom Audio
  • Performance Rating: StarStarStarStar
  • Value Rating: StarStarStarhalf-star
  • Review Date: April 14, 2009 21:40
  • MSRP: $ 3,850 (amp discontinued due to reliability issues)
  • Amplifier Type: Class D

Power (1 channel driven)

  • 8 ohms - 350 watts

  • 4 ohms - 700 watts

  • 2 ohms - 1,200 watts

Power (1 channel full and6 channels at 1/8 power)

  • 8 ohms - 350 watts per channel

  • 4 ohms - 700 watts per channel

  • 2 ohms - 800 watts per channel

Power (7 channels driven)

  • All impedances - 200 watts per channel

  • H x W x D (inches) = 4 x 18 x 17.5

  • Weight: 58lbs

  • Capacitance - 140,000 microfarads

  • Warranty: 5 Years


  • A true powerhouse with sonic chops to match
  • Superb bass response that rivals competitor linear amp designs
  • A true space saver
  • Energy efficient


  • Susceptible to ground loops via unbalanced connections
  • Easier than most amplifiers to blow out/damage due to negligence
  • Too wide for standard 17” rack mounts


Axiom Audio A1400-8 Introduction

a1400001.jpgTechnological progress is a wonderful thing. Over the past 40 years or so, we’ve seen computers that filled an entire room get eclipsed in processing power by ones that can fit in your wristwatch though I’d never admit to wearing one. Thanks to Bell Labs and the invention of the transistor, this and more has become a reality and the reason why today we can get such powerful and reliable amplification. By contrast, years ago 30 watts/channel meant large bulky tube amps that generated lots of heat and often required constant upkeep. For the last couple of decades, solid-state amplifier technology has been pushed to its technological limit. Incredible sound and reliable operation are all hallmarks of the very best designs. However, the problem of bulkiness remains, and they generate lots of heat. Class D amplifiers have been working their way into the consumer marketplace to address these issues. The promised advantage is up to 95% efficiency (at full power), and thus less heat generation, and a smaller footprint. Until recently, Class D amps were used almost exclusively for powered subwoofers and car audio because they were best suited for low-frequency and non-critical audio applications. A lot has changed since the introduction of these amps. With the very same silicon advances we observed in the computer industry, we are seeing a similar trend now for audio. We’ve tested numerous Class D amplifier designs that have achieved mixed results both sonically and objectively. But Axiom claims their Class D amp is of a different breed. What makes the Axiom Class D amp any different and will it be able to sit aside the very best linear amplifiers? Continue reading to find out….

About the author:
author portrait

Gene manages this organization, establishes relations with manufacturers and keeps Audioholics a well oiled machine. His goal is to educate about home theater and develop more standards in the industry to eliminate consumer confusion clouded by industry snake oil.

View full profile