DEQX Pre-4 Digital Preamp
DEQX Pre-4 Digital Preamp
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Founded in 1997 and headquartered in Sydney, Australia, DEQX is a pioneering audio technology company renowned for its advanced loudspeaker, crossover, and room-correction solutions. Founded by Kim Ryrie, a co-founder of Fairlight Instruments, DEQX builds on decades of innovation in digital audio processing to deliver unprecedented accuracy in sound reproduction. The company's patented technologies analyse and correct timing, phase, frequency, and room-acoustic distortions at the microsecond level, enabling audiophiles, recording professionals, and music enthusiasts to experience recordings with exceptional clarity, realism, and spatial precision.
SPECIFICATIONS
| Specification | Detail |
|---|---|
| Analogue Outputs | 2x Pairs XLR + 2x Pairs RCA |
| Digital Inputs | Optical x2, SPDIF x1, AES-3 x1 (XMOS USB Optional) |
| Analogue Inputs | 1x XLR Pair + 2x RCA Pair (or 1x RCA, 1x MM Phono) |
| Display | 5.5" HD Touch Sensitive AMOLED |
| Processing | ARM HEX Core 64-bit, 64K Taps |
| Streaming | Roon, Tidal (Native, Connect), Qobuz, Internet Radio, Attached (USB, NAS), UPnP, DLNA, Bluetooth 5.0, AirPlay Compatible, Web-Radio |
| Dynavector Phono Preamp MM (Optional) | |
| Frequency Response | RIAA ±0.2dB, 20Hz - 20kHz |
| THD | 0.001% (1kHz) |
| Input Impedance | 47kΩ // 220pF |
GENERAL SPECIFICATIONS
| Specification | Detail |
|---|---|
| Mains Voltage Range | 100-240VAC, 50-60Hz |
| Dimensions | Width 380mm, Height 110mm, Depth 300mm |
| Display | 5.5" HD Touch Sensitive AMOLED |
| WiFi | 802.11 a/b/g/n/ac |
| Bluetooth | 5.0 |
| Trigger Out | 2 x 12V Phono |
SOFTWARE SPECIFICATIONS (DEQX Cal-II)
| Feature | Detail |
|---|---|
| Web Browser Based UI | PC / Tablet / Phone |
| Processing Engine | DEQX Cloud Processing |
| Active Crossover | Up to 4-way |
| Sample Rate Converter | TI to 192kHz |
| Crossover Filters | Linear Phase, Linkwitz Riley, Butterworth |
| Slopes | 6dB/octave to 200dB/octave |
| EQ Filter Types | FIR, IIR, DEQX Low Latency FIR |
| Parametric EQ | Separate Left/Right Speaker plus Global Multiband |
| Latency | Depends on filter type, FIR 10ms (video sync) |
| TAPS | Typical 4K to 16K, up to 8 channels |
WHAT THE WORLD'S AUDIO PRESS IS SAYING
"I MUST HAVE VISITED 100 DEMO ROOMS AND BOOTHS BUT DEQX IMPRESSED ME MORE THAN ANY..."
— Brent Butterworth, SoundAndVisionMag.com
"GOBSMACKED BY DEQX."
— John Atkinson, Stereophile
"IT MADE MY VERY GOOD SPEAKERS UNDENIABLY BETTER..."
— Kal Rubinson, Stereophile
"THERE WAS NOTHING 'DIGITAL' ABOUT THE PRESENTATION. NOTHING..."
— Michael Fremer, AnalogPlanet.com
"THE MOST JAW-DROPPING DEMO OF THE SHOW..."
— Frank Berryman, UltraHighEndReview.com
"IF I HADN'T HEARD IT WITH MY OWN EARS, I WOULDN'T HAVE BELIEVED IT..."
— Steve Guttenberg, CNET.com
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