xDuoo A35 | Desktop Tube Amplifier

A35 is a Combo Integrated Vacuum Tube Amplifier and DAC, Built with Premium Components for Audiophile-Grade Expectations

• ESS ES9018K2M DAC
• Built for two-channel listening
• Features Custom 12AX7 and Two 12AU7 Tubes
• Four Matching EL34 Tubes
• Hand-wired Craftsmanship

Three Years in the Making

The A35 is a high-end integrated tube amplifier meticulously developed over three years. Its preamp stage adopts one custom 12AX7 and two 12AU7 tubes to build a long-tail phase-inverter amplifier circuit. The power stage features four EL34 tubes configured in a classic push-pull topology, delivering a robust 45W output per channel.

Built with an all-tube circuit design, every vacuum tube is strictly selected and precisely matched. It faithfully reproduces rich, mellow musical tones and brings vivid vitality to vocals.

Thoughtfully Chosen Tubes

Voltage Amplifier Stage
Equipped with high-gain 12AX7 dual triode for initial signal amplification. It delivers excellent linearity and pure musical texture.

Driver Stage
Dual 12AU7 triodes feature low internal resistance, low noise and high current. It provides solid power and ample headroom.

Power Amplifier Stage
Four precisely matched EL34 tubes form a classic push-pull circuit. 45W per channel output reproduces grand dynamics and delicate musical details.

Hand-Wired Point-to-Point Craftsmanship

A35 features fully tube-based circuitry with traditional point-to-point soldering on core circuits. Direct component connection eliminates extra lead interference. Short copper wiring ensures a neat layout, natural shielding and low crosstalk. 

Ultra-Linear Operation Mode

The xDuoo A35 has ultra-linear amplification for outstanding dynamics and a wide frequency response. It delivers solid bass, layered soundstage and clear, pleasant sound for all genres.

Professional Hardware Decoding

A35 is built with the ESS ES9018K2M high-performance DAC. The ESS chip provides ultra-low distortion and high signal-to-noise ratio, which extends dynamic range. You can expect refined, layered audiophile sound.

Custom EI Transformer

The transformer is made with imported cores and low-magnetostriction silicon steel, tightly wound with high-purity enameled copper wire. It suppresses coil resonance and vibration to eliminate high-frequency noise. With stable performance and ultra-low background noise, it delivers a rich, pure classic tube sound.

Multi-Protection Circuits

Built-in relay protection with 60-second power-on delay warm up tubes and eliminate switch-on pops. It automatically guards against overload and short circuits, protecting speakers and the unit.