Tube Headphone Amp, 32-bit/192-kHz USB DAC with separate Tube Power Supply
All pre-owned product is tested in our service department and have been passed for sale... and comes with a 90 day warranty! Tubes have all been tested.
In beautiful condition! Original box and packing are NOT included, but we will pack carefully. See last two images for specs on each.
This is an excellent sounding Pure Class-A Single-ended Vacuum Tube Headphone Amplifier. Includes Sovtek 6C45Pi and Westinghouse 12AU7 Tubes. note: 1st generation fireflies does NOT have an optical input. Circa 2013 This is an excellent combo for both low and high impedance headphones.
From Woo: The WOO Audio WA7 “Fireflies” Amp/DAC is a combination of high performance vacuum tube headphone amplifier with a built-in USB Digital-to-Analog Converter. It employs a pure tube design, utilizing 6C45 tubes in a class-A, single-ended topology, with transformer coupled outputs. No semi-conductors used in the entire signal path. The D-A converter is designed to be capable of up to 32-bit/192k sampling rates. Pure data integrity is maintained while it 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, a 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 with the capacity to drive almost any demanding audiophile headphones. To accommodate different system setup needs, “Fireflies” can also be used as a stand-alone D-A Converter.
Features of the WA7fireflies:
Handmade output transformer with Nickel Alloy core
32-Bit, 192kHz high resolution playback
Ultra-low jitter USB 2.0 runs on Asynchronous mode
High and low impedance output facilitated via toggle switch on back panel
Open load protection will automatically engage to prevent the amp from damaging when no headphones are plugged in
Multi-functional switch for USB input, RCA input, and RCA output via D-A.
The RCA connectors can be used either as RCA analog inputs or USB DAC line-out outputs.
All-aluminum chassis with no screws visible from any viewing angles
High clarity tube protection glass; Multi-layer military grade PCBs
USB Audio Class 2.0 is natively supported by Apple OS X version 10.6.4 and above without installing driver
WA7tp is a high performance vacuum tubes linear power supply for WA7 Fireflies and WA7d Fireflies Duo. It utilizes a pair of 12AU7/ECC82 tubes as rectifiers. This commonly available tube allows the user to tube swap among other brands available for a personalized, tailored sound signature. WA7tp boast the same all-aluminum chassis design with no visible screws from any viewing angles as the award-winning WA7 Fireflies. A thick block of the finest grade high-clarity glass that serves to protect the vacuum tubes rests on the chassis giving the WA7tp the same unmistakable appearance as WA7 Fireflies and WA7d Fireflies Duo. We carefully engineered the hefty over-sized volume knob found on WA7 to operate as power ON/OFF on WA7tp; paying close attention to how it feels when pressed. Moving up from the solid-state power supply (PSU) to the new WA7tp (vacuum tubes PSU) improves the overall sound quality with enhanced stereo separation, smoother treble, more air, and more effortless sound.
Features of WA7tp:
Custom Toroidal power transformer
All-aluminum chassis with no screws visible from any viewing angles
High-clarity tube protection glass
Multi-layer military grade PCBs
Hand selected, matched pair 12AU7
