dac8 PRO

8-channel D/A converter with top-tier analog performance

One device, 3 modes, endless possibilities

Multichannel playback

Home cinema

Active speakers with a PC-based crossover

Real-time, PC-based DSP with AES/EBU inputs

Recording and monitoring

Interfacing with studio crossovers & Oppo players with Audiopraise Vanity board

General AES/EBU usage

With passion for music designed and made in Prague

From CNC machining to PCB assembly, Okto Research products are built for you in central Europe. We keep most of the production in-house and for the rest, we work with local suppliers and manufacturers to ensure the highest quality, because only that will make us proud to deliver our products.

Reviews and testimonials


Analog performance

0.000032% / -130 dB full-scale THD (Total Harmonic Distortion)
0.00011% / -119 dB full-scale THD+N (Total Harmonic Distortion + Noise) or 119dB SINAD
125dB dynamic range (20Hz - 20kHz)
0.000224% / -113 dB THD+N @ 100mW into 32 Ohms headphone output

Digital connections

USB (asynchronous, UAC2.0 compliant) 8-channel I/O, up to 192 kHz / 32 bit, DSD128 or DoP64
4x AES/EBU (resampling-free, up to 192 kHz / 24-bit)
1x AES/EBU output (routed from channel 1 and 2)

Analog outputs

8x XLR balanced
4.1V RMS full-scale
6.3 mm (1/4") headphone output (routed from channel 1 and 2)

Additional features

Designed to directly interface to amplifiers
Per-channel volume
Routing matrix
Choice between 7 PCM reconstruction FIR filters
Configurable auto on / auto off
Configurable display timer 
Remote control learning 
Trigger output (pulse / continuous)
2x 2.42" OLED displays


446 x 183 x 50 mm excluding feet (user removable)
Weight: 4.5 kg (10 lbs)


120 V AC or 230 V AC
Power rating: 15 W


2 years


Owner's Manual


dac8 PRO

Due to supply chain issues, a limited amount of units is being released for sale at a time.

Please contact us if you have an EU VAT number and want to make a purchase with VAT excluded.

Accessories and extras

Apple Remote

Practical, reliable, beautiful. While the dac8 PRO can learn commands from any remote, we recommend the original Apple Remote

Rack mounting brackets

Brackets for mounting the dac8 PRO into a 19" rack. Mounting holes are spaced 1.75" apart vertically.

Custom output voltage

Choose a custom output voltage that matches your amplifier. Available in range from 1 to 12V RMS. Please specify the requested value in your order note.