xDuoo A35

The xDuoo A35 integrated valve amplifier is designed to power passive speakers in home Hi-Fi systems. It combines the classic character of vacuum tubes with the power to handle a wide range of speakers. The push-pull design with four EL34 valves offers up to 2×45W of power at 8Ω impedance. A built-in DAC and wireless Bluetooth connectivity expand its usability, allowing the amplifier to serve as the heart of your audio setup.

Three-stage valve architecture

The amplification section uses an all-valve architecture that processes the signal in stages. The 12AX7 valve handles voltage amplification, while the pair of 12AU7s stabilise the current and prepare the signal for the output stage. The final power is provided by four EL34 valves in a push-pull configuration. Operating in ultra-linear mode helps to combine power with linearity and signal control, contributing to a full and natural sound with excellent detail clarity.

Digital and analogue connectivity

The xDuoo A35 amplifier is ready to be the centrepiece of your system. Thanks to the built-in D/A converter with an ESS ES9018K2M chip, you can connect digital sources without needing an external device. For wireless listening, there is Bluetooth 5.1 with codec support for SBC, AAC, aptX and aptX HD. A trio of RCA inputs serves classic analogue sources. Speaker outputs for 4Ω and 8Ω make it easy to match with different types of speakers.

Reliable construction and pure signal

During the design, emphasis was placed on mechanical and electrical craftsmanship. The internal point-to-point wiring helps to reduce interference and maintain signal purity throughout its path. A stabilised power supply with an EI transformer and filtering circuits contributes to low noise. The solid chassis reduces vibrations that could negatively affect the valves. Contact is enhanced by gold-plated input and output connectors, while start-up protection circuits safeguard the amplifier and connected components.