ONIX Beta XI2 – Portable Tube DAC/AMP for Audiophiles

ONIX has a long heritage in high-end audio, originally established in the UK and today continued by Shanling Audio in China. The ONIX Beta XI2 represents the brand’s latest portable innovation – a compact USB DAC/AMP designed to combine state-of-the-art digital processing with the sonic warmth of tubes. According to the manufacturer, the new design elevates the foundation laid by the Alpha XI1, adding refined amplifier architecture, dual-DAC precision and the unique option of a tube output stage.

Key Facts ONIX Beta XI2

• Brand: ONIX (Shanling Audio)
• Dual Cirrus Logic CS43198 DACs for fully balanced outputs
• Redesigned headphone amplifier with TI OPA1662 and TI BUF634A
• Tube output stage with JAN 6418 miniature tubes
• Aluminum chassis, 0.87-inch monochrome display, three hardware buttons
• Hi-Res Audio up to 32-bit/768 kHz and DSD512
• Cross-platform compatibility: Android, iOS, Windows, macOS
• Price: USD $ 349,-, available now

Upgraded Headphone Amplifier

Compared to the Alpha XI1, the Beta XI2 introduces a more sophisticated amplifier design. Using dual TI OPA1662 op-amps and four TI BUF634A buffers, Shanling promises improved transparency, dynamic headroom and better control. This makes the DAC/AMP suitable for both high-sensitivity in-ear monitors and more demanding full-size headphones.

Output Options & Power Ratings

• 3.5 mm SE (Transistor): 45 mW @ 32 Ω (Low Gain), 180 mW @ 32 Ω (High Gain)
• 3.5 mm SE (Tube): 37 mW @ 32 Ω (Low Gain), 152 mW @ 32 Ω (High Gain)
• 4.4 mm Balanced (Transistor): 80 mW @ 32 Ω (Low Gain), 550 mW @ 32 Ω (High Gain)
• 4.4 mm Balanced (Tube): 52 mW @ 32 Ω (Low Gain), 550 mW @ 32 Ω (High Gain)

Tube Output with JAN 6418

A distinctive feature of the ONIX Beta XI2 is its dedicated tube stage, built around two JAN 6418 miniature tubes. Shanling highlights that users can instantly switch between solid-state and tube outputs. The tubes are housed securely within the chassis, with small windows revealing the characteristic warm glow. A custom suspension system minimizes microphonic noise, ensuring stable portable use.

ONIX Design with Premium Details

Like its predecessor, the Beta XI2 continues ONIX’s design language with a sturdy aluminum body that blends durability with refinement. The compact 0.87-inch monochrome display provides quick status feedback, while three hardware buttons allow intuitive control on the move. Each unit ships with ONIX’s signature gold-plated OL1 USB cable made of silver-plated copper.

ONIX – From the UK to Shanling Audio

Founded in the 1980s in Britain, ONIX quickly gained recognition for high-quality amplifiers and Hi-Fi components. After several ownership changes, Shanling Audio took over the brand. The company emphasizes that the ONIX line continues to embody traditional Hi-Fi values while integrating modern digital and tube technology, securing its relevance in today’s portable audio landscape.

Price and Availability

The ONIX Beta XI2 is available now at a recommended retail price of USD $ 349,-.

Conclusion

With the ONIX Beta XI2, Shanling Audio demonstrates how portable audio can bridge the gap between cutting-edge digital conversion and the musical character of tubes. Dual DACs, a newly developed amplifier stage and the option of a tube output make the Beta XI2 a versatile DAC/AMP for discerning music lovers who demand premium sound wherever they go.

Technical Specifications