What Is a Power Amplifier — and Why Does It Matter?
Every music system needs an amplifier — it’s the component that makes your music powerful enough to drive your speakers. You’ll find one inside a TV, a portable Bluetooth speaker, or a car stereo. Without it, all you would hear is a very faint signal.
Today, many high-quality audio products — such as music streamers, DACs, and preamps — are built without an amplifier inside. That’s actually good news: it gives you the freedom to pair them with a dedicated, high-performance power amplifier that delivers cleaner sound, greater control, and far better dynamics than built-in solutions.
This is exactly where IOM amplifiers come in. Designed for music lovers who seek realism, control, and emotional engagement, our amplifiers provide the pure, stable power your speakers need — allowing music to unfold with clarity, depth, and authority.
Metric — The Instrument
At the pinnacle of IOM stands Metric.
Not conceived as a conventional amplifier, Metric is a visible instrument of power — a deliberate fusion of precision engineering, material integrity, and musical experience. Its large dynamic analog power meter reveals the real-time energy delivered to your loudspeakers, transforming listening into a multi-sensory experience where sound and motion exist in harmony.
The meter is not an aesthetic gesture but a purpose-built instrument, engineered for speed, accuracy, and musical coherence. Its movement mirrors the rhythm and dynamics of the music, deepening immersion and strengthening the emotional connection between listener and performance.
Encased in a seamless enclosure CNC-machined from solid aluminium, Metric embodies permanence and restraint. Every surface, proportion, and interaction is resolved to serve a single idea: to make the presence of music tangible.
Metric is created for those who seek more than reproduction.
It is for those who want to witness music as it lives and breathes.
The IOM Range
While Metric represents our most complete expression of form and performance, the IOM range offers solutions for different systems and listening environments.
IOM 500 Stereo
A reference stereo amplifier based on Hypex NCx500 technology, delivering exceptional resolution, effortless dynamics, and absolute control for demanding loudspeakers.
IOM Brick Mono 250
A straightforward yet high-quality 250 W mono amplifier with RCA and XLR inputs. For stereo playback, two units are used — one per channel. Ideal for upgrading AV receivers with clean, dedicated power.
IOM Brick Stereo 250
The stereo version in the same compact housing, offering simplicity and performance in equal measure.
IOM Brick Integrated
A compact yet complete amplifier with volume control and input selection, featuring two RCA inputs and one XLR input. Based on the same board as the Brick Stereo.
IOM Ultra
Designed specifically for the WiiM Ultra, this amplifier integrates seamlessly in both form and function, unlocking the streamer’s full potential while delivering the unmistakable IOM sound quality.
Whether you are building your first true hi-fi system or refining a reference setup, IOM amplifiers provide the foundation for music that is not only heard, but deeply experienced.
All IOM products mentioned above can be found in our shop, where you can explore specifications, configurations, and availability.