xDuoo A35 Integrated Vacuum Tube Amplifier | EL34 Push-Pull 45W, ES9018K2M DAC

The xDuoo A35 is a statement integrated vacuum tube amplifier three years in the making — a hand-wired, all-tube masterpiece that combines classic EL34 push-pull power with a built-in ESS ES9018K2M DAC and Qualcomm Bluetooth 5.1 for a complete, modern Hi-Fi source. Delivering 45W per channel of pure tube power, the A35 is built for audiophiles who demand the warmth, dimensionality, and emotional engagement that only a great tube amplifier can provide.

EL34 Push-Pull 45W/ch 12AX7 + 12AU7 Preamp Stage ESS ES9018K2M DAC Bluetooth 5.1 aptX HD Point-to-Point Hand Wiring Ultra-Linear Operation Custom EI Transformer SNR 93dB | THD ≤1% 110V / 220V Available 38 × 34 × 20 cm | 20kg

Key Features

Three-Stage All-Tube Circuit: 12AX7 + 12AU7 + EL34
The A35 employs a classic three-stage tube topology. A single 12AX7 dual triode handles voltage amplification with excellent linearity and pure musical texture. Two 12AU7 triodes form the driver stage, providing low noise, low internal resistance, and ample headroom. Four precisely matched EL34 tubes in a classic push-pull configuration deliver 45W per channel of grand dynamics and delicate musical detail. Every tube is strictly selected and precisely matched.

Point-to-Point Hand-Wired Construction
Core circuits are built using traditional point-to-point soldering — direct component connections that eliminate extra lead interference. Short copper wiring ensures a neat layout, natural shielding, and low crosstalk. Ultra-low impedance stays true to the ideal circuit design, delivering the pure, warm classic tube sound that audiophiles seek.

Ultra-Linear Operation Mode
The A35 operates in ultra-linear mode for outstanding dynamics and wide frequency response (20Hz – 60kHz, +3dB). Solid bass, a layered soundstage, and clear, pleasant sound make it equally at home with orchestral, jazz, vocal, and electronic music.

ESS ES9018K2M Professional DAC
A built-in ESS ES9018K2M high-performance DAC chip provides ultra-low distortion and high SNR, extending dynamic range and delivering refined, layered digital playback directly through the amplifier — no external DAC required.

Qualcomm Bluetooth 5.1 with aptX HD
Equipped with a Qualcomm Bluetooth 5.1 chip supporting SBC, AAC, aptX, and aptX HD, the A35 enables stable, lossless high-fidelity wireless audio from any compatible smartphone or source device.

Custom EI Transformer
The power supply is built around a custom EI transformer wound with imported low-magnetostriction silicon steel cores and high-purity enameled copper wire, vacuum-impregnated at high temperature. It suppresses coil resonance and vibration, eliminates high-frequency noise, and provides a stable, ultra-low noise foundation for the entire circuit.

Premium Audiophile Components
Main filter capacitors are Japan-made TK audio-dedicated models tailored specifically for tube amplifiers, delivering smooth, warm tone, full bass, and crisp treble. Gold-plated input and output connectors ensure reliable, anti-oxidation contact for lossless, long-term signal transmission.

Shock & Interference Resistant Chassis
A high-strength metal casing with a dedicated tube shockproof structure blocks vibration and electromagnetic interference, preserving the original musical texture with stable, pure audio output.

Shipping Notice

Due to the weight (20kg) and value of this product, we recommend shipping via DHL or equivalent express courier for safe delivery. Please contact us before placing your order to discuss shipping options. DDP (Delivered Duty Paid) service with customs clearance is available for select countries. Contact our customer service team for details.

Specifications