XDUOO XD05 BAL Portable Balanced DAC Headphone Amplifier
The XDUOO XD05 BAL is a high-performance portable DAC and headphone amplifier that combines dual ESS Sabre DAC chips, balanced circuitry, and versatile connectivity in a compact chassis. Designed for both mobile and desktop use, it delivers clean high-resolution playback, strong driving power, and flexible input options for demanding headphones and high-resolution audio sources.
Dual ES9038Q2M DAC Architecture
At the core of the XD05 BAL are dual ESS ES9038Q2M DAC chips configured for balanced signal processing. This architecture supports high-resolution decoding of PCM up to 32-bit/768kHz and native DSD up to DSD512 via USB. The dual-chip design contributes to lower distortion and improved channel separation, resulting in detailed and transparent audio reproduction.
Powerful Balanced and Single-Ended Amplification
The amplifier section provides 1000mW of output power at 32 ohms on both the 4.4mm balanced and 6.35mm single-ended headphone outputs. Balanced output achieves THD+N of 0.0009% and SNR of 117dB, while single-ended reaches THD+N of 0.0015% and SNR of 115dB. Dual gain settings of +6dB and +15dB allow the unit to drive a wide range of headphones from sensitive IEMs to higher-impedance models.
Comprehensive Digital and Analog Connectivity
The XD05 BAL offers multiple input options including USB-C, AES, optical, coaxial, 3.5mm AUX, and Bluetooth. Bluetooth supports high-definition codecs including LDAC, aptX HD, aptX LL, aptX, AAC, and SBC. Optical, coaxial, and AES inputs support up to 24-bit/192kHz PCM and DSD64 DoP, enabling flexible connection to computers, digital transports, and mobile devices.
Portable Design with Extended Battery Life
Measuring 13.0 × 7.5 × 2.2 cm and weighing 0.29 kg, the XD05 BAL is built for portability. It incorporates a 5000mAh battery that delivers approximately 9 hours of playback via USB input, 15 hours via SPDIF, and 24 hours via AUX input. A 0.91-inch OLED screen clearly displays sampling rate, input source, filter status, and remaining battery level.
Customizable Sound Options
Users can select from multiple digital filters, engage a boost function, and switch between dual gain levels. The op-amps are designed for easy user replacement, allowing further adjustment of the sound signature to suit different headphones and listening preferences.
About xDuoo
xDuoo is a Shenzhen-based audio brand specializing in the development and manufacture of high-fidelity portable and desktop audio equipment. The company focuses on DAC and headphone amplifier solutions that emphasize solid technical performance, practical features, and competitive value for audiophiles.
Technical Specifications
DAC: Dual ES9038Q2M
USB Support: PCM 16-32bit/44.1-768kHz, Native DSD64-DSD512
Optical/Coaxial/AES: PCM 16-24bit/44.1-192kHz, DSD64 (DoP)
Bluetooth Codecs: LDAC, aptX HD, aptX LL, aptX, AAC, SBC
Headphone Outputs: 4.4mm Balanced + 6.35mm Single-ended
Output Power: 1000mW @ 32Ω (both outputs)
THD+N: 0.0009% (Balanced), 0.0015% (Single-ended)
SNR: 117dB (Balanced), 115dB (Single-ended)
Gain: +6dB / +15dB
Battery: 3.8V / 5000mAh
Battery Life: USB ≥9H | SPDIF ≥15H | AUX ≥24H
Dimensions: 13.0 × 7.5 × 2.2 cm
Weight: 0.29 kg
Q&A
What DAC chips does the XDUOO XD05 BAL use?
It uses dual ESS ES9038Q2M DAC chips.
What is the maximum sampling rate supported via USB?
PCM up to 32-bit/768kHz and native DSD up to DSD512.
Does the XD05 BAL support Bluetooth high-resolution codecs?
Yes. It supports LDAC, aptX HD, aptX LL, aptX, AAC, and SBC.
