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ONIX

Onix Beta Xi2 Portable HIFI Tube DAC AMP Headphone Amplifier

Onix Beta Xi2 Portable HIFI Tube DAC AMP Headphone Amplifier

Regular price $328.06 USD
Regular price $328.00 USD Sale price $328.06 USD
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ONIX Beta XI2 — Portable Hi-Fi Tube DAC/Headphone Amplifier

Dual CS43198 decoding meets JAN6418 tube musicality.

The ONIX Beta (XI2) elevates portable listening with a rare hybrid design that blends dual Cirrus Logic CS43198 DACs for pristine resolution with dual JAN6418 pentode tubes on the balanced output for an organic, analog-like timbre. An upgraded amp stage (4× BUF634 + 2× OPA1662) delivers up to 550 mW @ 32 Ω, while a 0.87" OLED, ring-LED codec indicator, and physical buttons make daily use effortless. Support for up to PCM 768 kHz/32-bit and DSD512 ensures true hi-res performance in a compact, beautifully finished chassis.

Dual CS43198 JAN6418 Tube Output PCM 768k/32 & DSD512 Up to 550 mW @ 32Ω 3.5 mm SE & 4.4 mm Balanced UAC 1.0 / 2.0 0.87" OLED + Ring LED 5 Digital Filters • 2 Gains

Key Features

  • Dual CS43198 DAC Chipset — Reference-grade Cirrus Logic decoding with excellent SNR and ultra-low THD, supporting formats up to 768 kHz/32-bit and DSD512.
  • JAN6418 Tube Balanced Output — Discrete twin pentode tubes integrated inside the chassis (subtle side windows) impart natural warmth and spatial bloom on the 4.4 mm output.
  • Upgraded Amplifier Architecture — 4× BUF634 high-speed buffers + 2× OPA1662 op-amps deliver authoritative drive, dynamics, and control.
  • Dual Headphone Outputs — 3.5 mm single-ended (solid-state path) and 4.4 mm balanced (tube path) to complement different headphones and signatures.
  • Intuitive UI — Physical keys for volume/settings, 0.87" OLED shows sample rate, filter, gain, and status; ring-LED colors reflect active format/sample rate.
  • Portable & Refined — Elegant, rugged body that’s slightly longer/wider than XI1 to accommodate the upgraded stage; ~45.3 g for everyday carry.
  • Flexible Connectivity — UAC 2.0 for hi-res on modern OS; UAC 1.0 mode for broader compatibility with consoles and legacy devices.

Technical Specifications

Model ONIX Beta (XI2)
DAC Dual Cirrus Logic CS43198
Tubes Dual JAN6418 (balanced output path)
Amp Stage 4× BUF634A high-speed buffers + 2× OPA1662 op-amps
Supported Formats PCM up to 768 kHz/32-bit; DSD up to DSD512
USB Mode UAC 2.0 / UAC 1.0 (switchable)
Gain & Filters High / Low gain; 5 digital filter options
Display & Indicators 0.87" OLED; ring LED (codec/sample-rate color)
Headphone Outputs 3.5 mm single-ended (SS); 4.4 mm balanced (tube)
3.5 mm SE Output Power Low gain: 45 mW @ 32 Ω; High gain: 180 mW @ 32 Ω
3.5 mm SE Performance FR 20 Hz–40 kHz (-0.5 dB); THD+N 0.0006% (A-w, 2 V); DR 124 dB; SNR 124 dB; Crosstalk 73 dB; Output Z ≈ 0.3 Ω
4.4 mm Balanced Output Power Low gain: 152 mW @ 32 Ω; High gain: 550 mW @ 32 Ω
4.4 mm Balanced Performance FR 20 Hz–40 kHz (-0.5 dB); THD+N 0.06% (A-w, 4 V); DR 127 dB; SNR 127 dB; Crosstalk 107 dB; Output Z ≈ 0.6 Ω
Ring-LED Color Map PCM 32/44.1/48 kHz: Blue • PCM 64/88.2/96 kHz: Green • PCM 128/176.4/192 kHz: Yellow • PCM 352.8/384/705.6/768 kHz: Purple • DSD: White
Dimensions / Weight ≈ 69.8 × 39 × 14 mm; ≈ 45.3 g

What’s in the Box

  • ONIX Beta XI2 Portable Tube DAC/Headphone Amplifier
  • User documentation

Notes: LED indicator can reflect active sample rates; OLED screensaver helps extend panel life. Specifications are based on manufacturer data and may vary slightly by batch. For best results, select appropriate gain and digital filter for your headphones and preference.




Shipping & Returns

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  • Free 7-Day Return Policy!

⚠️ Important Notice: EU Customs Reform Effective 1 July 2026

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