---
product_id: 20722791
title: "Woo Audio WA7d Fireflies Duo with WA7tp (Tube Power Supply) Upgrade in Silver"
brand: "woo audio"
price: "FREE"
currency: TND
in_stock: false
url: https://www.desertcart.tn/products/20722791-woo-audio-wa7d-fireflies-duo-with-wa7tp-tube-power-supply
store_origin: TN
region: Tunisia
---

# Woo Audio WA7d Fireflies Duo with WA7tp (Tube Power Supply) Upgrade in Silver

**Brand:** woo audio
**Price:** FREE
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** Woo Audio WA7d Fireflies Duo with WA7tp (Tube Power Supply) Upgrade in Silver by woo audio
- **How much does it cost?** FREE with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/20722791-woo-audio-wa7d-fireflies-duo-with-wa7tp-tube-power-supply)

## Best For

- woo audio enthusiasts

## Why This Product

- Trusted woo audio brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

With WA7tp (tube power supply) upgrade. The Woo Audio WA7d "Fireflies Duo" Amp/DAC is a combination of high performance vacuum tube headphone amplifier with a built-in USB Digital-to-Analog Converter. To accommodate different system setup needs, "Fireflies Duo" adds optical TOSLINK input. WA7d is a pure tube design, utilizing 6C45 tubes in a class-A, single-ended topology, with transformer coupled outputs. There are no semiconductors used in the entire signal path. The D/A converter is designed to be capable of up to 32-bit/192k sampling rates. This maintains pure data integrity, which is transmitted via standard high speed USB 2.0 interface operating in asynchronous mode. The high quality construction features include a pair of Nickel Alloy core output transformers, all-aluminum chassis with no screws visible from any viewing angles, an external linear external power supply for amplification circuitries, a custom built toroidal power transformer, and multi-layer military grade PCBs. The dedicated port for in-ear monitors carries a full range of volume controls ensuring minimal noise. Despite its incredibly compact size, "Fireflies" is a power-house outputting up to 1w of power to drive almost any demanding audiophile headphones.

## Features

- High Performance 100% Vacuum Tube Design Headphone Amplifier with DAC
- 32-Bit, 192kHz DAC for high resolution audio playback
- Ultra quiet 1/4" and 3.5mm (for IEM) headphone outputs, Hi/Lo Impedance switch
- Multi-functional switch for USB input, optical TOSLINK Input and RCA input
- Avaliable in Black or Silver color, High clarity glass top for tubes protection

## Images

![Woo Audio WA7d Fireflies Duo with WA7tp (Tube Power Supply) Upgrade in Silver - Image 1](https://m.media-amazon.com/images/I/61u1ezrg7DL.jpg)
![Woo Audio WA7d Fireflies Duo with WA7tp (Tube Power Supply) Upgrade in Silver - Image 2](https://m.media-amazon.com/images/I/61GyaN0yNTL.jpg)
![Woo Audio WA7d Fireflies Duo with WA7tp (Tube Power Supply) Upgrade in Silver - Image 3](https://m.media-amazon.com/images/I/61zc4WMDU3L.jpg)
![Woo Audio WA7d Fireflies Duo with WA7tp (Tube Power Supply) Upgrade in Silver - Image 4](https://m.media-amazon.com/images/I/91Pn30BKXKL.jpg)

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**Shop now:** [https://www.desertcart.tn/products/20722791-woo-audio-wa7d-fireflies-duo-with-wa7tp-tube-power-supply](https://www.desertcart.tn/products/20722791-woo-audio-wa7d-fireflies-duo-with-wa7tp-tube-power-supply)

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-09-29*