Good tone takes time.

CHUCK started with one simple question: Why is there no tube tone you can rely on without compromise – without giving up modern flexibility?

The developer behind CHUCK is a guitarist and an electronics engineer. He knew both sides: the emotional punch of a great tube amp and the limits of classic setups in the day-to-day of studio and stage. What was missing wasn't another product. It was a solution.

• CHUCK came from a real need
• built by guitarists for guitarists
• not a market play, but our own answer

underdog is a brand of IMM electronics GmbH. Development and manufacturing mesh directly here – under one roof, at one site, held to the same quality standards.

For years, IMM has stood for professional manufacturing, clean processes and technical precision in audio. CHUCK wasn't just conceived here – it was engineered production-ready inside IMM. The goal was clear from day one: a product that convinces not only as a prototype, but runs reliably at scale – on stage, in the studio and in a musician's everyday life.

Here, the perspective of a musician who knows how a good amp has to feel meets the industrial experience of a company that builds gear to stay stable and reproducible over the long haul.

CHUCK is assembled, tested and finally dialed in at our own facility in Mittweida – under the direct responsibility of the team behind underdog. Every assembly is brought together, tested and signed off in house – by people who know what they're building for and what counts on stage later.

No CHUCK leaves the line until it delivers exactly what it was built to do.

Try CHUCK in your setup. At your own pace. CHUCK is built for players who compare, understand and only then decide.

• 30-day home trial
• Try it at authorized dealers
• No risk, no pressure