Woo Audio TUBE mini

The Woo Audio TUBE mini is an ultraportable vacuum tube headphone amplifier and DAC, the result of Woo's pursuit to bring their tube heritage to a pocket-sized format, combining an ESS SABRE high-resolution DAC with a proprietary Mighty-Drive architecture that pairs each vacuum tube channel with MOSFET amplification for the dynamic authority and warmth of tubes in a device smaller than an average smartphone. Designed and assembled in New York.

Type and Technology

Ultraportable vacuum tube DAC and headphone amplifier. Mighty-Drive topology: each channel uses a dedicated vacuum tube for tube character and warmth, combined with MOSFET output stage for drive capability and power, a hybrid architecture unique to the TUBE mini. Spring-loaded mechanical tube suspension system isolates tubes from external vibration, preventing tube microphonics from entering the signal path. ESS SABRE audiophile DAC for high-resolution lossless playback and streaming service compatibility. USB-C input with USB-A adapter cable included. Internal power management system for plug-and-play setup from USB-C power. Balanced 4.4mm headphone output and single-ended 3.5mm headphone output. Designed and assembled in New York. Three-year limited warranty.

Sound Character

Warm, full, and engaging, the tube-driven character of the TUBE mini gives music a dimensionality and tonal richness that solid-state portable devices do not produce. The Mighty-Drive MOSFET stage adds the authority to drive full-sized headphones with genuine control, while the ESS SABRE DAC provides the resolution and detail that the tube stage can then express. A genuinely unique portable listening experience.

Build and Finish

Compact chassis smaller than an average smartphone, housing the tube complement in a spring-loaded suspension system. Supplied with a USB-C to USB adapter cable and a travel case. Available in black. Designed and assembled in New York by Woo Audio.

Best For

Music lovers who want the warmth and engagement of vacuum tube amplification in a genuinely portable form factor, a carry-everywhere companion for full-sized headphones that sounds like nothing else at its size.

What's in the Box

• Woo Audio TUBE mini headphone amplifier/DAC
• USB-C to USB adapter cable
• Travel case
• Quick start guide

Specifications