Alpha Theta Euphonia Pro 4 Channel Rotary Mixer

The AlphaTheta Euphonia is a flagship 4 channel rotary DJ mixer that fuses pristine 32 bit digital processing with the musical warmth of a custom Rupert Neve Designs transformer stage. Designed for DJs who live for long, expressive blends, it delivers a euphoric, harmonically rich sound while giving you deep, tactile control over every transition, effect and frequency band.

Every signal that passes through the Euphonia is treated with studio grade conversion and processing, then sweetened by an analogue style transformer circuit tuned specifically for this mixer. Add in newly developed rotary channel faders, a powerful Energy Visualizer, next generation master isolator with Boost Send, and flexible built in and external effects routing, and you have a performance tool that invites you to slow down, listen deeper and sculpt your own signature sound.

Hybrid Sound Engine with Rupert Neve Designs Transformer

At the heart of the Euphonia is a high resolution digital engine using 32 bit A/D and D/A converters and 96 kHz / 64 bit floating point mixing in the DSP. This ensures exceptional clarity, wide frequency response and precise reproduction of every detail in your tracks. After processing, all audio passes through a transformer circuit co designed with Rupert Neve Designs, adding musical harmonics and a glossy, energetic character. Low end becomes more stable and punchy, mids gain presence and sheen, and highs feel silky and natural, helping tracks from different eras and genres sit together as if they were made for each other.

Expressive Rotary Faders That Respond to Your Touch

The Euphonia’s newly developed rotary faders are designed to make you feel physically connected to the music. Each knob has been carefully sized and finished with an elastomer outer ring for a secure, comfortable grip and excellent vibration absorption. Inside, a unique mechanism adjusts the resistance depending on how fast you turn the knob, giving you smooth, weighted control for slow, detailed rides and lighter resistance when you move quickly to hit a level instantly. Optimised volume curves, refined with feedback from working DJs, allow you to blend naturally even without touching the EQ, so you can focus on musical phrasing and dynamics.

Energy Visualizer for Confident, Consistent Mixes

Instead of a single traditional VU meter, the Euphonia features an Energy Visualizer that makes it easy to see what your mix is doing at a glance. The Mix Level Meter provides individual needle meters for each channel, so you can instantly compare levels and keep your blends tight and controlled. Alongside this, the Spectrum Analyser shows the balance of the master output across the frequency range, helping you maintain a consistent tonal profile throughout long sets. By watching the Energy Visualizer as you listen, you can make quick, informed adjustments that keep the dancefloor locked in.

Master Isolator with Boost Send and Built In Effects

The three band master isolator on the Euphonia is built for performance. Large, perfectly weighted knobs make it easy to execute fast, dramatic cuts or subtle tonal shaping, with carefully chosen crossover points that naturally separate kick, melody and rhythm elements. The innovative Boost Send function lets you apply built in or external effects to individual isolator bands with one hand, freeing the other for channel mixing. With selectable Boost Level settings, you can decide how aggressively each band lifts when engaged. Five spatial Send FX plus a high pass filter are on board, with a dedicated send level on each channel and a time control that changes feel depending on the effect, giving you both rhythmic precision and smooth, continuous sweeps.

Refined Design for the Modern Rotary DJ

The Euphonia’s visual design reflects its blend of tradition and innovation. A two tone, two layer layout separates the classic channel strip area from the modern display section, using contrasting matte and gloss finishes to keep everything clear and intuitive. Copper coloured primary knobs hint at the warmth of the sound, while black wood side panels complete a sophisticated, club ready aesthetic. Under the surface, flexible send/return and master insert options, DVS compatibility with rekordbox and Serato DJ Pro, and a lockable power cord round out a package built for serious, long term use in demanding environments.

• Hybrid Digital and Analogue Style Sound Engine - High quality 32 bit A/D and D/A converters and 96 kHz / 64 bit floating point DSP mixing deliver ultra clear, detailed audio, while the custom Rupert Neve Designs transformer stage adds musical harmonics and warmth. This combination gives you a powerful, modern sound that still feels organic and inviting on the dancefloor.
• Newly Developed Rotary Channel Faders - Carefully weighted rotary faders with elastomer coated knobs respond differently to slow and fast movements, enabling both precise micro adjustments and rapid level changes. Optimised volume curves make smooth, musical blends easier, so you can focus on phrasing and emotion rather than fighting the controls.
• Energy Visualizer with Mix Level Meter and Spectrum Analyser - Individual needle meters for each channel let you instantly see level relationships across your mix, while the Spectrum Analyser shows the tonal balance of the master output. Together they help you maintain consistent loudness and frequency balance, reducing fatigue and keeping your sets sounding polished from start to finish.
• Master Isolator with Boost Send and Built In Send FX - A high quality three band master isolator with large, performance ready knobs lets you shape or completely cut low, mid and high bands. The Boost Send function allows one handed application of internal or external effects to specific bands, and the onboard Delay, Tape Echo, Echo Verb, Reverb, Shimmer and HPF provide instant depth and movement without extra hardware.

General

• Product: AlphaTheta Euphonia
• Type: 4 channel rotary DJ mixer
• Max. external dimensions (W × D × H): 429.2 × 331.0 × 119.9 mm
• Main unit weight: 9.5 kg
• Frequency response: 20 Hz 40 kHz (LINE)
• S/N ratio (USB, DIGITAL IN): 107 dB
• S/N ratio (PHONO): 88 dB
• S/N ratio (LINE): 105 dB
• S/N ratio (MIC): 79 dB
• Power requirements: AC 110 V 240 V, 50 Hz / 60 Hz
• Power consumption: 43 W

Sound Engine and Processing

• Conversion: 32 bit A/D and D/A
• Internal processing: 96 kHz / 64 bit floating point DSP mixing
• Transformer circuit: Co designed with Rupert Neve Designs

Inputs

• Digital in: 4 × coaxial
• Line: 4 × RCA
• Phono: 4 × RCA
• Mic: 1 × XLR and 1/4" TRS jack (combined)

Outputs

• Master: 1 × XLR
• Booth: 1 × 1/4" TRS jack
• Rec: 1 × RCA
• Headphones: 2 × (1/4" stereo phone jack, 3.5 mm stereo mini jack)

Send, Return and Inserts

• Send: 2 × 1/4" TS jack
• Return: 2 × 1/4" TS jack
• Master insert: Supported
• Send/Return: Supports both send/return type pedals and insert type effect units

USB and Software

• USB: 1 × USB Type C
• Compatible software: rekordbox
• Compatible software: Serato DJ Pro (Serato DVS ready, licence or subscription required)

Built In Effects and Controls

• Send FX types: Delay, Tape Echo, Echo Verb, Reverb, Shimmer, HPF (high pass filter)
• Per channel send level control
• Time knob with variable click behaviour depending on selected effect
• 3 band master isolator with Boost Send
• Boost Level settings: 0 dB, +6 dB, +12 dB
• Energy Visualizer with Mix Level Meter and Spectrum Analyser

Accessories

• Power cord
• Warranty (for some regions)
• Quick start guide
• Precautions for use