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FOUR.VALVE Rotary Desktop Mixer

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Description

The Union Audio four.valve is a state-of-the-art 4-channel analog rotary mixer that fuses the timeless charm of valve (tube) technology with the precision and versatility demanded by today's DJ professionals. Crafted with carefully selected components and housed in a rugged metal chassis, the four.valve delivers the warm, musical sound that analog enthusiasts crave.

Each of the four channels offers independent phono and line inputs, making it easy to blend vinyl and digital sources seamlessly. Smooth rotary faders, a high-grade Innofader crossfader, and precise 3-band EQs allow for intuitive control and seamless transitions. At its core lies a finely tuned valve circuit that imparts unmistakable warmth and depth to every mix?ensuring high sonic quality and expressive dynamics, even during long sets.

The thoughtfully designed layout is tailored to the needs of professional DJs, delivering reliable performance whether in clubs, studios, or premium event setups. Whether you're spinning vinyl or digital, the four.valve elevates your performance by combining classic tube warmth with modern functionality.

Features:
4-channel analog rotary mixer with valve (tube) technology
Dedicated phono preamp and line inputs (RCA) per channel
High-quality 3-band EQs with rich detail and no loss of valve character
Premium-quality Innofader crossfader
Aux send per channel for effects units (Send/Return via 2x 6.3 mm jack)
Precision Alps rotary faders for smooth transitions and superior tactile feel
Separate level controls for Master Out, Booth Out, and Aux Return
Two illuminated analog VU meters for accurate level monitoring
High-powered headphone amplifier with split cue and cue/mix control
Universal headphone connectors: 6.3 mm (1/4") and 3.5 mm jack
Flexible output options: Balanced XLR Master Out, 6.3 mm Booth Out, RCA Record Out
Fully analog circuitry and components for a classic warm sound
High build quality and robust metal enclosure for dependable performance in clubs, studios, or home setups
Made in the UK

Technical Specifications - Union Audio four.valve Rotary Mixer
Channels: 4
Signal Path: Fully analog
Valve Technology: Precision valve circuitry per channel
Phono Preamps: Integrated per channel
Faders: Precision Alps rotary faders
Crossfader: High-quality Innofader
EQ: 3-band EQ per channel with detailed response and valve preservation
Aux Control: Per channel for external effects
Master Isolator: 3-band isolator with crossovers at 200 Hz, 800 Hz, and 2000 Hz
Phono Inputs: 4x RCA
Line Inputs: 4x RCA
Aux Send/Return: 2x 6.3 mm jack (TRS)
Master Out: 2x balanced XLR
Booth Out: 2x 6.3 mm jack (TRS)
Record Out: 2x RCA
Headphone Outputs: 6.3 mm and 3.5 mm jack
Headphone Output Power: 750 mW RMS @ 33 Ohm
Headphone Features: Split cue, cue/mix balance
Total Harmonic Distortion + Noise (THD+N): 0.1% typical (unweighted, 0 dBu, 20 Hz-20 kHz)
Frequency Response Line In ? Mix Out: ±1 dB from 20 Hz to 50 kHz
RIAA Accuracy: ±1 dB from 20 Hz to 20 kHz
Fader Attenuation (Shutoff): > -80 dB
Channel Crosstalk: < -75 dB @ 1 kHz
Residual Noise (Output): < -92 dBu (22 Hz - 22 kHz, unweighted)
Line In ? Mix Out Noise (Unity Gain): < -85 dBu
Maximum Output Level (Mix Out, 0.5% THD): +27 dBu
Dynamic Range: 116 dB
High-Pass Filter: -3 dB @ 1500 Hz (fully open)
Power Supply: External switching power supply (SMPSU)
Input Voltage: 90-260 VAC
Output Voltage: 18 V DC, 30-40 W
Efficiency Rating: LEVEL VI
Enclosure: Durable metal housing
Level Monitoring: 2 illuminated analog VU meters
Origin: Made in the UK

Dimensions & Weight:
Mixer Size: 35.0 x 10.0 x 28.3 cm (incl. knobs, W x H x D)
Mixer Weight: 4.75 kg
Shipping Dimensions: 48 x 38 x 20 cm
Shipping Weight: 7 kg
Brand reference number: 550100
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