Axiom Audio A1400-8 Digital Multi-Channel Amplifier Review

Axiom Audio A1400-8 Introduction

Technological 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….