Eleven XI Audio Eleven Audio Broadway Battery-Powered Fully Balanced Class A Headphone

Battery-Powered Fully Balanced Discrete Class A Headphone Amplifier

Combining refined musicality with exceptional transparency and an ultra-quiet background. Designed for listeners who value natural tone, precise detail retrieval, and effortless musical expression, delivering a remarkably smooth and immersive headphone experience.

Power Supply Architecture

Uses four replaceable Li-Ion batteries as part of its power supply architecture, dramatically reducing AC line noise and providing an exceptionally clean power foundation.

Operating Time

The amplifier can operate for 6-11 hours on battery power alone, or remain connected to AC power for continuous listening while maintaining the same highly refined sonic character.

Balanced Amplification Topology

Accepting balanced XLR inputs only, featuring a four-channel fully balanced amplification topology with direct signal paths to the balanced headphone output.

Power Output and Performance

With 1.5 watts of pure Class A power into 32 ohms, provides smooth, effortless drive capability while preserving fine detail, tonal richness, and spatial realism.

Design Reference

Developed with ABYSS Diana series headphones as a reference, created to complement high-performance headphone systems with a natural and engaging sonic character.

Single-Ended Variant

The single-ended variant is specifically tuned for low-impedance, high-sensitivity headphones. The connectivity features a pair of RCA inputs, while outputs are updated to an XLR 4-Pin and a 6.35mm stereo jack. Gain, sonic quality, and drive capability have been completely re-engineered and optimized, allowing a wide range of low-impedance, high-sensitivity flagship headphones to perform at their absolute best.

Optimized for: Sennheiser, AKG, Sony, Grado, Fostex, Final Audio, Denon