Woo Audio
Woo Audio WA7tp Tube Power Supply
Best tube upgrade for dedicated desktop headphone amplifier owners.
The Woo Audio WA7tp is a vacuum tube power supply upgrade designed exclusively for owners of the WA7 or WA7d Fireflies. It replaces the original linear solid-state power supply, offering an enhanced audio experience. This unit requires either the WA7 or WA7d to function. It features a 1-foot DC cable and comes with two 12AU7 vacuum tubes. The chassis is constructed from anodized aluminum and is available in black or silver finishes. This power supply is designed and handcrafted in New York, USA, and supports global voltage compatibility.
$749.00
Owner Satisfaction
4.6
/ 5
Category Rank
247
/ 3596
#247 in Power Adapters & Chargers
Price vs Category Average
+156%
Above average
Color
Black, Silver
/ Black, Silver
Who it's for
- Audiophiles seeking enhanced clarity and a wider soundstage
- Design-conscious listeners wanting a cohesive, high-end aesthetic
- Critical listeners prioritizing a silent, low-noise background
Who should skip it
- Budget-focused buyers looking for essential upgrades only
- Desktop users with limited workspace availability
- Minimalists wanting to avoid ongoing maintenance and tube replacements
Performance breakdown
Sonic Enhancement
Vacuum tube integration adds a rich, organic warmth to your audio signal.
Build Quality
Anodized aluminum chassis provides a robust, premium feel on your desk.
System Compatibility
Specifically engineered to elevate the performance of existing Fireflies series units.
Global Versatility
Universal voltage support ensures consistent power delivery anywhere in the world.
Craftsmanship
Handcrafted in New York with meticulous attention to high-end audio standards.
Installation Simplicity
Straightforward plug-and-play design makes the upgrade process quick and intuitive.
Key Specs
Color
Black, Silver
Requires WA7 Fireflies or WA7D Fireflies Duo
1 foot DC Cable
12AU7 tube x 2
Anodized aluminum chassis
Dimensions
5.25 in H x 4.8 in W x 6 in D
Weight
9.4 lbs
Global voltage compatibility
100v–220v
Features
- Vacuum tube power supply upgrade
- Enhances audio experience for WA7/WA7d
- Replaces original solid-state power supply
- Includes two 12AU7 vacuum tubes
- Durable anodized aluminum chassis
- Available in black or silver
- Global voltage compatibility
- Handcrafted in the USA
What customers say
Customers consistently praise the Woo Audio WA7tp Tube Power Supply for its exceptional build quality and the significant sonic improvements it brings to their audio setups. Many reviewers highlight how this dedicated power supply elevates the performance of the WA7 amplifier, delivering a cleaner, more refined soundstage and enhanced detail. While an investment, users frequently express satisfaction with its robust construction and the tangible upgrade in listening pleasure, affirming its perceived value within the premium audio segment. The elegant design also receives positive remarks.
Know before you buy
No, the WA7tp is designed exclusively for the Woo Audio WA7 and WA7d Fireflies. It is not compatible with other amplifiers or external devices.
The WA7tp replaces the standard solid-state power supply to provide a more refined, tube-driven audio character. It enhances the sonic performance of your Fireflies unit by utilizing two 12AU7 vacuum tubes.
Yes, the unit features global voltage compatibility, supporting power inputs from 100v to 220v. You can use it worldwide, provided you have the correct plug adapter for your region.
The package includes the WA7tp power supply unit, a 1-foot DC connection cable, and two 12AU7 vacuum tubes required for operation.
The WA7tp measures 5.25 inches high, 4.8 inches wide, and 6 inches deep. Given its 9.4-pound weight and the heat generated by vacuum tubes, ensure you place it on a stable, well-ventilated surface.
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Ready to buy?
$749