Aune BX2 Magnum Headphone Amplifier
Class A headphone amplifier
Tube and transistor modes
Fully balanced amplifier architecture
Twin JFET input stages
Dual 6P1 KORG Nutube tubes
R2R volume control
30 V high-voltage power supply
Dual power supply: ±12 V / ±5 V
14,000 mAh 7-cell battery
Latching relays
CNC-machined full aluminum chassis
External 12 V input
Aune BX2 Magnum
Unprecedented Power Reserves for Uncompromising Sound
The amplifier that opens up space.
The BX2 Magnum was developed around generous power reserves. Extensive headroom in the power supply, amplification stage, and signal path ensures complete control at all times, delivering stable, dynamic sound with authentic detail under any condition.
Design Philosophy:
Headroom as the Foundation of Great Sound
Outstanding amplifier design never operates at its limits. The BX2 Magnum is built on three core principles:
Power Supply Headroom: Seven independent power cells with complete analog/digital isolation eliminate interference.
Amplification Headroom: A fully balanced four-channel architecture combined with a 30 V high-voltage supply delivers exceptional dynamics and control.
Signal Path Headroom: Physical relay switching and a precision R2R volume control ensure lossless signal handling without coloration while keeping every stage in its optimal linear range.
The result is stable dynamic headroom, balanced frequency response, and natural musicality.
Powerful Technology Inside:
Portable Amplification Redefined
Dual Nutube 6P1 Vacuum Tubes: Actively integrated into the amplifier circuit and responsible for its distinctive tube character.
Fully Balanced Four-Channel Architecture: Four independent signal paths for precise imaging and minimal crosstalk.
30 V Anode Supply: Increased dynamics and control.
Physical Relay Switching Between Tube and Transistor Modes: Lossless switching without affecting sound quality.
31-Step Digital R2R Volume Control: Precise adjustment with excellent channel matching.
Seven-Stage Isolated Power System: Separate supplies for analog and digital circuits.
Two Sound Signatures:
Instant Switching, Optimized for Every Headphone
Tube Mode: Warm, rich, and musical. Ideal for vocals, instruments, and extended listening.
Transistor Mode: Linear, fast, and highly detailed. For maximum precision and dynamics.
The two signal paths are physically separated and can be switched instantly to match different headphones and music styles.
Desktop-Class Amplifier Architecture
Two KORG Nutube 6P1 vacuum tubes with a JFET input stage provide layered, natural sound reproduction.
Flagship-Class Power Supply
Integrated battery system with 7 × 2000 mAh:
One cell for digital control.
Six cells for ±12 V analog supply.
Dual four-level battery indicators on the rear.
The 30 V anode supply keeps the tubes operating in their ideal range.
Extensive Connectivity & Intuitive Operation
Ready for Any Listening Scenario
Outstanding Specifications
The Foundation of Great Sound
≤ 3 µV output noise, THD+N as low as 0.0005%, and up to 5 W output power at 32 Ω ensure a silent background, exceptional precision, and substantial power reserves.
Professionally Tuned Sound
Natural and Musical
Carefully tuned using real instruments and reference-grade measurement equipment. The result is a natural, balanced, and musical presentation with authentic character.
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