Legacy products


DSP-based crossover, streaming-enabled 32-bit preamplifier and ultra-performance, 8-channel DAC


Analog performance

0.000056% / -125dB full-scale THD (Total Harmonic Distortion)
0.00015% / -118dB full-scale THD+N (Total Harmonic Distortion + Noise)
125dBA dynamic range
0.000224% / -113dB THD+N @ 100mW into 32 Ohms headphone output


USB (asynchronous, UAC2.0 compliant, up to 192 kHz / 24-bit, ASIO support)
AES/EBU (up to 192 kHz)
SPDIF (up to 192 kHz)
Optical (up to 192kHz)
Ethernet (through Raspberry Pi)
Wi-Fi (through Raspberry Pi)


8x XLR balanced, 4V RMS differential (or per request up to 15V RMS)
Headphones (routed from channel 1 and 2)

DSP capabilities

NanoSHARC module with Analog Devices SHARC DSP
Low / High pass filters: Butterworth, Linkwitz-Riley, Bessel, up to 48dB/oct
Parametric equalizers: peak/shelf, 10 EQ bands per input/output
Custom biquads
Delay: up to 35ms per channel with 0.01ms increment
FIR filters: up to 3400 taps total and 2048 taps per channel
Delay: up to 35ms per channel with 0.01ms increment
Custom 2x8 matrix routing
96 kHz / 32-bit floating point internal processing

Additional features

Choice between 7 Sabre's internal FIR filters
Individual channel volume
Trigger output (pulse / continuous)
Configurable auto on / auto off
Full control with either pushable knob or remote
Remote control learning 
32-bit volume control
2x 2.42" OLED displays


450 mm x 240 mm x 55 mm
Weight: 4.5kg (10 lbs)


120VAC / 60Hz (American version) or 230VAC / 50Hz (European version)
Power rating: 15W


2 years


Due to a shortage of the NanoSHARC modules, we currently do not take new orders for DAC8 DSP.

Okto Research Modules

DAC8 Module

A heart of all current Okto Research products

Sabre ES9028PRO D/A chip

8 balanced outputs available on XLRs and headers

I2S/DSD input (up to 384k/32bit or DSD256)

Fully-differential signal path with Burr-Brown/TI OPA1632 amplifiers

-124dB (0.000063%) total harmonic distortion

Headphone amplifier delivering 100mW into 32ohm with -113dB (0.00022% ) THD+N

Pop-free turn-on and turn-off thanks to unique protection circuit

Compatible with USBStreamer, NanoSHARC and MiniSHARC by MiniDSP and other popular products

Extensive support for flawless integration

OktoPSU Power Supply

Designed for DAC8 module

Low-radiation Talema toroidal transformers

Schottky rectifiers avoid diode switching noise

10,000 µF of filtration capacitance for each voltage

Spare galvanically isolated 5V voltage at your disposal

Selectable mains voltage 120V/230V

Comes with cables and connectors