Woo Audio
TUBE mini Balanced Headphone Amplifier / DAC
Best portable solution for audiophiles seeking warm tube sound on-the-go.
The Woo Audio TUBE mini is an ultraportable vacuum-tube headphone amplifier and DAC designed to deliver powerful, high-quality sound in a compact form factor, roughly half the size of a smartphone. It combines traditional vacuum tubes with innovative Mighty-Drive technology, featuring MOSFET amplification for a warm tube sound with enhanced power. This device integrates a high-resolution ESS SABRE DAC, supporting up to 24-bit/384kHz PCM and DSD256, ensuring an impressive listening experience for all your music. Its USB bus-powered design offers plug-and-play convenience with various operating systems and devices.
$425.00
Owner Satisfaction
4.7
/ 5
Category Rank
53
/ 766
#53 in Headphone Amplifiers
Price vs Category Average
-70%
Below average
Outputs
4.43.5
/ mm balanced ‘Pentaconn’ or mm unbalanced
Who it's for
- Audiophiles seeking a warm, emotional, and natural listening experience
- Design-conscious listeners wanting a premium, space-saving desktop centerpiece
- Critical listeners using high-impedance headphones requiring balanced power
Who should skip it
- Budget-focused buyers looking for an entry-level audio solution
- Users preferring low-maintenance gear without heat or replacement parts
- Casual listeners who prioritize instant, plug-and-play convenience
Performance breakdown
Portability
Smartphone-sized footprint makes high-fidelity audio effortless to carry anywhere.
Sonic Warmth
Vacuum tube integration provides that signature organic, rich harmonic texture.
Driving Power
Mighty-Drive technology delivers surprising punch for such a compact chassis.
Digital Precision
ESS SABRE DAC handles high-resolution files with exceptional clarity and detail.
Build Integrity
Anodized aluminum construction feels premium and protects the delicate tube suspension.
Ease of Use
Plug-and-play USB operation removes all technical friction for mobile listeners.
Key Specs
Outputs
4.4mm balanced ‘Pentaconn’ or 3.5mm unbalanced
ESS SABRE DAC up to 24-bit/384kHz PCM, and up to DSD256 (11.2MHz)
USB bus-powered, No driver required
Maximum power output
1W @ 8 Ohms
Frequency response (amp)
20 Hz - 46 kHz (-3dB)
Signal to noise ratio
100dB
Chassis
Anodized aluminum
Dimensions (W, H, D)
107mm x 35mm x 7mm
Features
- Ultraportable vacuum-tube headphone amplifier and DAC
- Combines warm tube sound with MOSFET amplification power
- High-resolution ESS SABRE DAC for lossless audio playback
- Plug-and-play USB bus-powered operation
- Designed and assembled in New York, USA
- Includes spring-loaded suspension system for vacuum tubes to minimize microphonics
- Available in multiple colors: black, silver, blue, and red
- Optional upgrade available with POWER BASE for enhanced performance
What customers say
Customers consistently praise the TUBE mini for its exceptional sound quality, delivering a rich, warm, and detailed audio experience that belies its compact size. Many highlight the premium build and elegant design, noting its solid construction and aesthetic appeal. Users appreciate how this device elevates their listening, offering a sophisticated sonic upgrade in a portable form factor. The combination of superb audio performance and robust craftsmanship makes it a standout choice for discerning audiophiles seeking a high quality personal audio solution.
Know before you buy
No, the TUBE mini is entirely USB bus-powered. It draws power directly from your connected device, making it a true plug-and-play solution without the need for charging.
Yes, the TUBE mini features both a 4.4mm balanced ‘Pentaconn’ output and a standard 3.5mm unbalanced output to accommodate a wide variety of headphone cables.
The TUBE mini is designed for portability and features a specialized spring-loaded suspension system. This protects the tubes from microphonics and physical shock during travel.
No, the device is designed for plug-and-play convenience. It works with most operating systems without the need for additional driver installations.
This hybrid design provides the signature warmth and harmonic richness associated with vacuum tubes, while the MOSFET technology ensures the power and control needed to drive your headphones effectively.
The POWER BASE is an optional accessory designed to provide additional stability and enhanced performance for the TUBE mini, helping to further refine the audio output.
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