The xDuoo TA-32 is a Class-A hybrid headphone amplifier for listeners who appreciate a bit of tube warmth paired with the punch of solid-state circuitry. It delivers up to 3000mW into a 32Ω load, giving it the power for a range of headphone types—from easy-to-handle IEMs to higher-impedance designs. It uses tube rectification and a transistor buffer, with a replaceable DAC card for shaping the sound to your preference. Its multiple digital inputs (USB, coaxial, optical, and Bluetooth) make it perfect for those with music libraries on laptops, phones, dedicated players, and elsewhere.
Tube rectification and hybrid amplifier
The TA-32 unifies tube and transistor technologies in one integrated design. A 5U4G vacuum tube handles rectification, while a pair of matched Ray Tubes 12AU7 CORE lend classic tube characteristics to the midrange and treble; and a Class-A transistor stage supplies a steady flow of current. This marriage of classic tube sonics and modern power delivery produces a signal that’s as warm as it is detailed.
Swappable DAC card
With a replaceable DAC module, you can enjoy different DAC chips (available separately) without having to buy an entirely new DAC/Amp. Shipping with the ROHM BD34301, the TA-32 can also be used with the AK4499EX DAC module, and the ES9039PRO module, both made by xDuoo, which you can bundle with your purchase.
Seamless connectivity
The TA-32 accommodates a broad range of sources like laptops, CD players, streamers, and more. It has coaxial, optical, and Bluetooth inputs, along with a USB connection for digital audio up to PCM 768kHz and DSD512. It also supports MQA 8x decoding through USB.
3000mW output power
Delivering up to 3000mW at 32Ω, the TA-32 supports headphone impedances from 16Ω to 600Ω. This amount of power provides ample overhead, maintaining definition in the bass, midrange, and treble. Whether you’re driving open-back or closed-back cans, the TA-32 keeps the audio clear and controlled at any listening level.
5.1 Bluetooth decoding
Convenience and quality go hand-in-hand with Bluetooth 5.1. Paired with a Qualcomm QCC5125 receiver chip, the TA-32 supports SBC, AAC, aptX, aptX LL, aptX HD (24-bit/48kHz), and LDAC (up to 24-bit/96kHz).
Tube preamp
The TA-32 can serve as a tube-driven preamplifier for your amplifier or speakers. Its matched pair of Ray Tubes 12AU7 CORE brings a touch of smoothness and warmth to your setup, which can be especially helpful if you find digital sources a bit clinical or bright.
Product highlights
Up to 3000mW of power to drive 16–600Ω headphones
USB DAC for Windows, macOS, iOS, Android, Linux, and more
Coaxial and optical inputs supporting up to 24Bit/192kHz and DSD64
Qualcomm QCC5125 chip for Bluetooth 5.1
Tube rectification (5U4G) and matched pair of Ray Tubes 12AU7 CORE for the audio stage
Replaceable DAC card for different sound signatures
ROHM BD34301 DAC chip for low distortion and high resolution
Tube + transistor hybrid amplifier architecture
Capacitors chosen to enhance transparency and smoothness
"I purchased this exceptional tube amplifier a few months ago has been an absolute delight. It seamlessly accommodates a wide range of audio sources, featuring all the necessary digital inputs and a balanced RCA input for connecting turntable phono preamps. Additionally, I have enhanced the system with Ray Select tube amps and the R2R DAC card, resulting in a warm, punchy sound with exceptional tight bass and superior sound separation. CDs and streaming sources produce an analog and natural sound, making this unit an ideal all-in-one solution. I am thoroughly satisfied with my purchase and highly recommend it."
— RayA (5/5)
Amazing with the right tubes
"Incredible with Emission Labs 5U4G rectifier and Apos Ray Select or Brimar NOS CV4003 (12AU7) and the ROHM DAC card."
— Demon3 (5/5)
Using the Ray Select 5U4
"Update 10-05-2025: With the latest offering from RayTubes, I decided to try the 5U4 Select tubes with the TA-32 The 5U4 needed some break-in time. I recommend a minimum of 50 hours (but 100 hours is better). With the Ray Select 5U4, there was more information and detail. Improvements were not as large as with the Ray Select 12AU7 replacement but improvements were made. I recommend first starting with the Ray Select 12AU7 replacement and then with the Select 5U4. They both improve the sound of the TA-32. The improvement in sound/detail using both the Select 12AU7 and Select 5U4 are significant. I would not want to listen to the TA-32 without them."
— Rick (5/5)
Wonderful Musical Satisfying Headphone DAC Preamp
"The TA-32 is a great Headphone amp, great DAC, and great DAC-Preamp. This unit is very Musically Satisfying, easy to use, and operate. The small tubes can be upgraded to Ray Select 12AU7 tubes. This will provide a nice improvement in musical detail and dynamics."
— Rick K. (5/5)
Amazing Piece of kit
"Tube Pream and Dac, direct dac out, full analogue stage with single ended and balanced in, replaceable dac cards, tube rolling with rectification and it sounds great too!"
— Sandor (5/5)
TA 32 review
"amazing headphone tube amp. i have owned many hi fi tube amps for turntables and CD's but this is first dedicated to headphones. and the soundstage. and detail are impressive."
— aaron b. (5/5)
We took it to CanJam
"It is a great product and we took it to CanJam with us. It got tremendous response. The only suggestion we have is for xDuoo to make it easier for swapping the DAC cards."
— Kunal K. (5/5)
Q&A
Do you have any suggestions for upgrading the 5U4G tube rectifier?
Hello. Unfortunately, we do not have any particular recommendations for upgrading the 5U4G tube.
Does the balanced XLR out at the back pass through the tube stage?
No, the balance XLR passes directly through the DAC instead of the tube stage
Does it support international voltage or need to choose between 120 or 220v ?
It supports both voltages. Based on your order's shipping address, the appropriate power cord is included. If you's like a specific power cord for a specific region, please write in to support@apos.audio
