A1 Integrated Amplifier, Clone Musical Fidelity A1 Circuit, Pure Class A 25W*2 Hi-Fi Amp with ALPS Potentiometer

CAOWEI A1 - A Tribute to a British Hi-Fi Legend

Step back in time and experience the magic of one of the most iconic amplifiers in audio history. The CAOWEI A1 is our masterful recreation of the legendary 1982 British A1 circuit, originally designed by the genius Tim de Paravicini. Our studio, with over 15 years of dedicated experience perfecting this specific circuit, proudly presents a modern amplifier that fully captures the warm, sweet, and incredibly musical "tube-like" sound of the original Pure Class A masterpiece.

Key Features at a Glance:

Legendary British A1 Circuit: A faithful tribute to the classic Tim de Paravicini design, renowned for its rich, immersive, and non-fatiguing sound.

Pure Class A Power: 25W+25W of high-current, zero-crossover-distortion power that sounds far bigger and more dynamic than its rating suggests.

Dual Mono & Star-Grounding: A true audiophile topology that eliminates crosstalk between channels for a vast, three-dimensional soundstage and a dead-silent background.

Custom Shielded Transformer: A custom-wound toroidal transformer with an electrostatic shield provides clean, stable power while rejecting grid noise.

Premium Japanese Components: Features a high-precision Japanese ALPS RK series potentiometer and a 40,000µF filter bank using original imported Rubycon capacitors.

Robust All-Aluminum Chassis: A beautiful and solid chassis that provides excellent heat dissipation and protects the sensitive circuitry from interference.

The Magic of Pure Class A Sound

The heart of the A1 is its Pure Class A design. Unlike more common Class AB amplifiers, the A1's transistors are always on, eliminating crossover distortion and producing a sound of exceptional purity and linearity. This allows the A1 to reproduce music with a liquidity, warmth, and harmonic richness that is simply captivating. While rated at 25 watts, its high-current delivery can effortlessly drive high-quality bookshelf speakers and small floor-standers, presenting a grand and detailed sonic performance.

Modern Engineering Meets a Classic Soul

We have taken the soul of a classic and fortified it with the best of modern engineering and components.

The Power Supply: The custom shielded toroidal transformer, high-speed rectifier circuit, and a 40,000µF Rubycon capacitor bank with a CRC filter ensure that the amplifier always has a reserve of pure, stable current to draw from.

Purity in Design: Our dual-mono and star-grounding layout ensures the shortest possible signal path and superior channel separation. This results in pinpoint imaging and a deep, quiet background, allowing the finest musical details to emerge.

Hand-Selected Components: We use a genuine Japanese ALPS RK series volume potentiometer for its reliability and smooth feel. The power transistors (TIP35/36) are hand-matched to reduce distortion and improve linearity, ensuring the final product is a perfect sonic mirror of the designer's intent.

An Immersive Listening Experience

The A1's most outstanding feature is its incredibly infectious musicality and vast soundstage. It draws you into the performance, allowing you to clearly place each instrument in space. The emotional expression of the music is conveyed with richness and detail, making every listening session an unforgettable, immersive experience.

Specifications: