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DJ Tech Reviews

AlphaTheta euphonia

A four-channel rotary flagship with a Rupert Neve Designs transformer and built-in effects; all reviews note the price.

AlphaTheta euphonia from above

Photos: AlphaTheta

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3 of 3 professional reviews recommend it
Best for
Rotary-mixer DJs who want built-in effects, a USB interface and every input type.
Skip it if
You cut with a crossfader, want channel filters, or have a modest budget.

The Internet’s Opinion

From 3 professional reviews: a fair amount of evidence.

All three professional reviews recommend it for the sound through its Rupert Neve Designs transformer, the build and feel of its rotary and isolator knobs, the boost-send master isolator and the built-in effects, and all three name the price as the drawback. No owner reviews were found, and the reviews all date from 2024.

3 recommend0 mixed0 avoid

What people praise

  • Rich, full sound through the Rupert Neve Designs transformer
  • Build and feel of the rotary faders and isolator knobs
  • Master isolator with Boost Send to put effects on one band
Show 4 more
  • Built-in send effects that can be shaped in depth
  • Energy Visualizer display with per-channel meters and a spectrum analyser
  • Built-in USB-C sound card for DVS and recording
  • Plenty of inputs and outputs, including four digital inputs

What to know first

  • A very high price
See the 3 reviews behind this

3 professional reviews (3 recommend, 0 mixed, 0 avoid); 0 owner reviews: Guitar Center shows none and Thomann does not list the productCompiled 2026-10-17How this is compiled

Prices

Before you buy

Released
March 2024
Status
Current

Works with

  • rekordboxPerformance and DVS unlocked

    Connecting the euphonia unlocks rekordbox Performance mode and DVS control on Mac and Windows Manufacturer spec sheet (rekordbox (AlphaTheta)), checked 2026-10-17

  • Serato DJ ProPaid licence

    HID mode and Serato DVS need a full Serato DJ Pro licence; Control Vinyl or Control CDs also need the Serato DVS expansion pack Manufacturer spec sheet (Serato), checked 2026-10-17

  • Turntables, CDJs and digital sourcesPhono, line, digital

    Each of the four channels takes an RCA phono, an RCA line and a coaxial digital input, plus USB audio from a computer Manufacturer spec sheet (AlphaTheta (euphonia Instruction Manual)), checked 2026-10-17

  • External effectsSend/return and master insert

    Send/return effect pedals and insert-type units such as the RMX-1000 connect separately; insert effects apply to the master Manufacturer spec sheet (AlphaTheta), checked 2026-10-17

  • MicrophoneXLR/TRS combo

    One XLR / 1/4" TRS combo input with its own two-band EQ Manufacturer spec sheet (AlphaTheta (euphonia Instruction Manual)), checked 2026-10-17

You’ll also need

  • Players or turntablesNo decks of its own

    A four-channel mixer for turntables, media players or a computer; the box holds the mixer, a power cord, the Quick Start Guide, Precautions for Use and, in Europe, a warranty Manufacturer spec sheet (AlphaTheta (euphonia Instruction Manual)), checked 2026-10-17

  • Speakers, headphones and cablesNot in the box

    Not supplied; the master output is XLR, the booth output 1/4" TRS, and the headphone outputs 1/4" and 3.5 mm Manufacturer spec sheet (AlphaTheta (euphonia Instruction Manual)), checked 2026-10-17

Key specs

Channels
4 rotary channels, each switchable between phono, line, digital and USB
EQ
3-band per channel, -26 dB to +6 dB; 3-band master isolator (250 Hz / 3.5 kHz, 18 dB/oct) with OFF to 0, +6 or +12 dB boost
Faders
No crossfader: four rotary faders with elastomer-ringed knobs and speed-dependent weighting
Effects
5 send effects (Delay, Tape Echo, Echo Verb, Reverb, Shimmer) and an HPF, with Boost Send to the master isolator bands
Inputs
4 x phono (RCA), 4 x line (RCA), 4 x digital coaxial (RCA), 2 x return (1/4" TS)
Mic inputs
1 x XLR / 1/4" TRS combo with 2-band EQ (±12 dB)
All 15 specifications
Outputs
Master XLR, booth 1/4" TRS with 2-band EQ, rec out RCA, 2 x send 1/4" TS (external and master insert), headphones 1/4" and 3.5 mm
USB audio interface
1 x USB Type-C; 96 kHz, 32-bit A/D on the channel inputs, 32-bit D/A on master, booth and master insert send
Weight
9.5 kg (20.94 lb)
Output stage
All output passes through a transformer circuit co-designed with Rupert Neve Designs
Display
Energy Visualizer: a needle meter for each channel and a spectrum analyser of the master output
Signal-to-noise ratio
107 dB (USB, digital in), 105 dB (line), 88 dB (phono), 79 dB (mic)
Frequency response
20 Hz – 40 kHz (line)
Power
AC 110 – 240 V, 50 / 60 Hz; 43 W
Dimensions (W x D x H)
429.2 x 331.0 x 119.9 mm (16.90 x 13.03 x 4.72 in)

15 of 15 figures sourced; hover one for its source

Our take

Rory TassellWritten from the sources on this page, not from a loan unit.

All three professional reviews recommend the euphonia for the sound through its Rupert Neve Designs transformer, the build and feel of its rotary and isolator knobs, the boost-send master isolator and the built-in effects, and all three name the price as the drawback. No owner reviews were found, and every review dates from 2024. Buy it if a rotary mixer is your instrument and the budget allows; it has no crossfader or channel filters.

What it is

Status, October 2026: current. AlphaTheta still lists the euphonia.

What it is

The euphonia is a four-channel rotary DJ mixer from AlphaTheta, announced on 14 March 2024 as the company's first rotary mixer (DJ TechTools). It mixes digitally at 96 kHz with 32-bit converters, and all output passes through a transformer circuit co-designed with Rupert Neve Designs (AlphaTheta product page).

Each channel has a trim, a three-band EQ, a send knob and a rotary fader whose knob is ringed with elastomer; there is no crossfader and no channel filter. The master section has a three-band isolator whose Boost Send buttons put an effect on one band as the knob turns, with a boost level of 0, +6 or +12 dB. The built-in send effects are Delay, Tape Echo, Echo Verb, Reverb, Shimmer and a high-pass filter, alongside an external send/return and a master insert for units such as the RMX-1000. The Energy Visualizer display shows a needle meter for each channel and a spectrum analyser of the master.

Every channel takes phono, line and coaxial digital inputs on RCA, plus USB audio from a computer through the single USB-C port. Outputs are XLR master, 1/4" TRS booth with a two-band EQ and RCA rec out, and the mic input is an XLR/TRS combo. It unlocks rekordbox Performance mode and DVS, and works with Serato DJ Pro and Serato DVS on a paid licence. It measures 429.2 x 331.0 x 119.9 mm and weighs 9.5 kg, and the box holds a power cord, the Quick Start Guide and Precautions for Use (euphonia manual).

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