xDuoo XD05 BAL2 Portable HiFi Balanced DAC and Headphone Amplifier


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The xDuoo XD05 BAL2 is a cutting-edge portable DAC and headphone amplifier designed for audiophiles on the go. The BAL2 boasts impressive specifications, outperforming its predecessors in SNR and THD+N measurements. Additionally, it provides robust power output, multiple input interfaces, fast charging, and easy op-amp replacements, all packed in a sleek, compact unit.

An upgrade that's more than skin deep

The XD05 BAL2 raises the bar with its dual DAC chips, significantly improving the signal-to-noise ratio and lowering THD+N compared to previous models like the XD05 Bal, XD05 Plus, and XD05 Basic. This advanced setup ensures you enjoy an audio experience that's as clear and pure as possible.

Powerful, clear sound

Delivering 1500mW of output power, the XD05 BAL2 ensures that even high impedance headphones provide full musical detail and explosive power. This is a noticeable 500mW increase from the previous model, the XD05 BAL.

Full-bodied bass

The BAL2 features a bass switch that lets you enhance the sensation of the bass. Perfect for headphones with weaker bass responses, this feature adds depth and richness to the low frequencies, making your music come alive.

Versatile inputs, expansive sound

The BAL2 offers multiple input interfaces, including AES balanced input and 4.4mm balanced output. This means from digital input to headphone output, everything is balanced. It results in a wider sound field and higher crosstalk for your balanced headphones.

Wireless convenience with Bluetooth 5.1

Bluetooth 5.1 compatibility enables wireless connection with various devices, with support for high-definition formats such as aptX_HD and LDAC. This means you can enjoy high-quality music wirelessly, with maximum convenience.

Op-amp rolling made easy

The XD05 BAL2 is designed with user-friendly op-amp replacements in mind. You can easily install different op-amp chips to explore different sound qualities, making the BAL2 a versatile tool for fine-tuning your audio experience.

Battery that lasts

The BAL2 houses a 5000mAh lithium-ion polymer battery, capable of more than 12 hours of continuous playback. And when you're indoors, you can use external power to conserve battery.

Clear, informative display

With the BAL2, you're always in the know. The orange OLED display clearly indicates the audio sampling rate, input interface, power status, and DAC filter status.

Product highlights

  • 1500mW output power
  • XMOS XU316 USB chip
  • 0.00065% THD+N
  • Bass switch
  • Turbo mode
  • 12-hour playback time
  • 3-hour quick charge
  • Dual power supply mode
  • 4.4mm balanced output
  • Bluetooth 5.1 wireless transmission
  • Easy op-amp replacement


  • Battery: 3.8V/5000mAh 
  • Screen: 0.91” OLED
  • Applicable OS: Windows, Linux, Mac OS X, iOs, Android
  • Frequency response
    • USB/SPDIF: 20Hz - 20kHz
    • AMP: 10Hz - 100kHz
  • Sampling rate support
    • USB
      • MQA: 8X
      • PCM: 16-32BIT /44.1-768kHz
      • DSD: DOP/Native mode, DSD64-512
    • AES/Optical/Coaxial
      • PCM: 16-24BIT/44.1-192kHz
      • DSD: DSD64 (DOP)
  • Bluetooth formats: AAC, SBC, APTX, APTX_LL, APTX_HD, LDAC
  • Turbo: +6/15dB
  • Bass: +6dB
  • 6.5mm output parameters
    • Output power: 1500mW @32Ω
    • THD+N: 0.0012%
    • SNR: 120dB
    • Crosstalk: ≥72dB
  • 4.4mm output parameters
    • Output power: 1500mW @32Ω 
    • THD+N: 0.00065%
    • SNR: 120dB
    • Crosstalk: ≥100dB
  • Aux out parameters
    • Output level: 2.0Vrms
    • THD+N: 0.0008% 
    • SNR: 120dB
    • Crosstalk: ≥100dB
  • Battery life
    • USB IN: ≥9 hours
    • SPDIF IN: ≥15 hours
    • AUX IN: ≥24 hours
  • Charging time
    • ≤3 hours (fast charging)
    • ≤6 hours (slow charging)
  • Size 5.19” x 2.9” x 0.8” (13.2cm x 7.5cm x 2.2cm) 
  • Weight: 0.6lbs (0.3kg)

What’s included

  • xDuoo XD05 Bal2
  • Quick start guide
  • Warranty card
  • USB-C cable x2
  • USB-C to lightning cable
  • Mini XLR cable
  • 6.35mm adapter 
  • USB adapter 
  • Charger 

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