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The Circuit

303 circuit diagram

Reyes Model H303: The Soul of American Tone

The Reyes Ampliphonics Model H303 isn’t just an amplifier; it’s a piece of American history, reborn. Its heart beats with a circuit inspired by the legendary “All-American Five” radios of the 1930s. These weren’t just radios; they were a symbol of American resilience and ingenuity, bringing music and news into homes during the Great Depression.

The AA5

Imagine a time when owning a radio was a luxury. The challenge was to create a radio that was affordable, reliable, and sounded great. Engineers achieved this through clever design and the development of innovative new tubes. They discovered how to get more from less, a principle that lies at the core of the 303’s exceptional tone.

Minimalism

The AA5 wasn’t about bells and whistles; it was about pure, unadulterated sound. This “less is more” philosophy is what makes the Reyes 303 so special. By focusing on the essentials, the circuit delivers a remarkably clear and direct signal path, revealing the true character of your instrument.

Built for Generations

Built to Last

The components used in the AA5 radios, and now in the Reyes 303, were designed for reliability. Developed in a time where durability was essential, these components have a proven track record. This heritage of robust construction is reflected in the 303, offering an amplifier built to withstand the rigors of regular use.

The Purity of Tone

The AA5’s design, and consequently the Reyes 303’s, prioritizes tonal purity. Every component is essential, contributing directly to the signal path. No elements exist to color or change the sound. This streamlined approach results in a direct, unadulterated tone, allowing the nuances of your instrument to shine through. It’s a responsive and inspiring playing experience, connecting you to the heart of your music.

Points of Interest

AC/DC circuit design: Heater string is operating on AC, B+ is DC

Slow-Start rectifier