Hybrid Tube Class-A Amp with Swappable DAC Card

We’re thrilled to announce that we’re now selling the xDuoo TA-32 on Apos. The xDuoo TA-32 is a Class-A hybrid headphone amplifier with a swappable digital-to-analog converter (DAC) card. It combines tube rectification with transistor technology, bringing a dose of warmth to your music. It also delivers enough power to drive a variety of headphones.

Class-A Hybrid Design

A Class-A amplifier continuously runs at a high bias current. In the TA-32, this approach pairs with vacuum tubes and transistors. A 5U4G tube handles rectification, while a matched pair of Ray Tubes 12AU7 CORE lends that classic tube musicality. On the solid-state side, the transistor buffer stage delivers the current flow. The result is a blend of tube warmth and transistor power.

Swappable DAC Card

The TA-32 allows you to switch out the DAC card when you feel like changing up the sound profile. The stock configuration includes a ROHM BD34301 DAC chip. xDuoo also offers an ES9039SPRO and an AK4499EX option (available separately).

Seamless Connectivity

The TA-32 is designed to work with a range of sources. There’s USB for connecting to your computer. There’s also coaxial, optical, and Bluetooth. The USB input decodes digital audio at up to PCM 768kHz and DSD512. It supports MQA 8x decoding as well. The Bluetooth 5.1 interface—powered by a Qualcomm QCC5125 receiver chip—handles SBC, AAC, aptX, aptX LL, aptX HD, and LDAC.

3000mW Output Power

Some headphone amplifiers struggle to drive higher-impedance headphones. The TA-32 provides up to 3000mW into 32Ω. That means it can handle headphones in the 16–600Ω range. The available overhead helps preserve clarity and prevents distortion at varying volume levels.

Tube Preamp Option

If you already own an amplifier or powered speakers, you can put the TA-32 to use as a tube-driven preamplifier. The matched pair of Ray Tubes 12AU7 CORE in the signal path can lend more smoothness to certain recordings. This may appeal to those who prefer a bit of warmth with their music.

Product Highlights

• Up to 3000mW of power for 16–600Ω headphones

• USB DAC for various platforms, including Windows, macOS, iOS, Android, and Linux

• Coaxial and optical inputs for up to 24Bit/192kHz and DSD64

• Bluetooth 5.1 reception via Qualcomm QCC5125 chip

• Tube rectification (5U4G) in tandem with a matched pair of Ray Tubes 12AU7 CORE

• Replaceable DAC card design

• ROHM BD34301 DAC chip included

• Class-A hybrid amplifier circuit with components selected for clarity

• Available for use as a tube preamplifier