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The Magic of First Watt

The Magic of First Watt

There's a saying among amplifier designers that the first watt is the most important one. 

That's mostly true.

Think about it this way. Most of your listening — the quiet passages, the delicate pluck of a guitar string, the breath before a vocalist begins — happens at very low power. Maybe a fraction of a watt. Your amplifier's 200-watt rating? You'll touch that on the loudest peaks for a fraction of a second. The rest of the time, you're living in that first watt.

This is why some of the most magical-sounding amplifiers in history have been low-powered designs. The original Marantz 8B. Early single-ended triode amps. The legendary Nelson Pass First Watt series — named, appropriately enough, for exactly this principle. These designs pour all of their engineering talent into making that first watt as pure and beautiful as possible.

It's also why Class A amplifiers have such a loyal following. A Class A amp is always "on," always conducting, never switching output devices on and off. At lower power levels — where the music lives — it's operating in its sweet spot. No crossover distortion, no switching artifacts. Just pure, uninterrupted signal.*

*Our upcoming PMG M800 monoblock amplifier we're debuting at Axpona, (affectionately dubbed "the beast") has its first 100 watts running in Class A."

Now, does that mean you should throw away your high-powered amp? Of course not. You need headroom and linearity. You need the ability to handle those dynamic peaks without strain. But here's the nuance most people miss: a 200-watt amplifier that sounds mediocre at one watt is going to sound mediocre most of the time. 

This is why matching amplifiers to speakers isn't just about wattage. It's about where the amplifier does its best work and whether your speakers let it stay there.

The first watt sets the stage and the headroom finishes the job.

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