








UNION AUDIO LIMITED
Union Audio TWO.VALVE Signature Series Rotary Mixer
The hand-crafted “Signature” variants of Union Audio's highly regarded Valve Series are designed for the audio purists, professional DJ and hi-fi enthusiast, who demand the rich character of valve (tube) technology along with an unrivalled sonic, tactile, and visual experience.
The Union Audio Signature Series blends valve circuitry with cutting-edge analogue design, each mixer featuring high-quality phono and line inputs across all channels for versatile integration with all conventional audio sources, and the silky-smooth, highly damped rotary fader assembly from our flagship Orbit.6, which ensures precise level adjustment for a seamless mix. An Innofader crossfader, a natural sounding 3-Band EQ, and an easy to use, intuitive interface, add to a mix tool capable of creating dynamic, engaging mixes with ease.
At the heart of the Signature series lies the unique valve circuitry incorporated on every channel, rich in second order harmonics and capable of natural soft compression when driven hard, they deliver an immersive sonic experience, full of warmth, yet detailed and involving.
The RIAA input stages have been further refined for vinyl reproduction, while paralleled channel VCAs offer increased dynamic range and reduced distortion, all feeding the fully balanced mix summing stage, taken care of by a pair of the legendary MUSES01 op-amps, these refinements elevating the already exceptional fidelity of the Valve Series.
The Signature Series exudes a luxury modern-retro vibe, built around a robust metal chassis, with CNC-machined, anodised aluminium bezels, a metallic bronze coloured faceplate, and hand-polished solid oak side trims, these mixers are perfect for high-end studios, sophisticated listening bars, or mobile DJ setups.
- Versatile Connectivity: Dual phono/line inputs on each channel accommodate a wide range of audio sources, offering flexibility for any setup.
- Intuitive Layout: A user-friendly design ensures quick operation and seamless transitions, tailored for professional performance.
- Premium Power Supply: Each mixer includes the mix.R power Linear PSU as standard, delivering a truly audiophile system out of the box.
- Stunning Aesthetics: Eye-catching blue and white channel metering, inspired by the elara.6, complements the luxurious build.
- Additional Highlights
Distortion plus Noise (THD+N) un-weighted
- 0dBu, 20Hz to 20kHz, Line In to Mix Out +4dBu — 0.1% Typically
Frequency Response
- Line in to Mix Out — +/-1dB 20Hz - 50kHz
- RIAA Accuracy — +/-1dB 20Hz to 20kHz
Shutoff and Crosstalk
- Fader Shutoff — > -80dB
- L/R Crosstalk Line in to Mix Out 1kHz — < -75dB
Noise 22Hz to 22kHz Un-Weighted
- Residual Output Noise — < -92dBu
- Line In to Mix Out Unity — < -85dBu
Maximum Output Level Mix Out
- 0.5% THD — +27dBu
Dynamic Range
- Dynamic Range — 116dB
EQ and Filter Frequency
- Channel High-Pass Filter Fully Clockwise — -3dB/1500Hz
- Master 3 Band Isolator — 200Hz, 800Hz, 2000Hz
Headphone Amplifier
- Maximum Output Level — 750mW RMS - 33 ohms
Power Supply
- Type — External SMPSU
- Mains Voltage Range — 90-260VAC
- Output — 18V DC 30-40W
- Efficiency — LEVEL VI
Dimensions - two.valve
- Mixer Height — 100mm (inc. knobs)
- Mixer Width — 230mm
- Mixer Depth — 283mm
- Weight — 3.5kg








