Guangzhou DSPPA Audio Co., Ltd.
Tel: 020-28346138
Fax: 020-81305947

D6688 8x8 Audio Matrix Processor


● 8 analog inputs, 8 analog outputs.
● Enable seamless transition between microphone and line inputs.
● Incorporate a 48V phantom power supply for each input, managed through a web switch.
● Include settings for input/output levels, signal generator, delay, noise gate, limiter, etc.
● Provide matrix mixing control.
● Allow a maximum delay time of 1500ms.
● Facilitate TCP/IP support for diverse parameter control through the web interface.
● Integrate RS-232, RS-485, and GPIO interfaces for comprehensive control functionalities.
● Feature a 5-band PEQ for input adjustment and a 9-band PEQ for output adjustment.
● Enable swift switching between various scene modes.

  • Introduction
  • Specification

This series is a high-quality professional audio processor with 8 analog inputs and 8 analog outputs. This product has built-in DSP functions such as input/output gain controller, noise gate, equalizer, matrix mix, crossover, delayer, and limiter. The device can be controlled through RJ45 drive-free connection to computer web page, controlled by the handheld terminal through the route WIFI login page, or controlled remotely through RS-232/RS-485 connection to the central control, suitable for various applications.



DSP Chip

Signal Processing

40-bit floating-point SHARC DSP 450MHz

Digital-to-Analog Conversion


Sampling Rate


Analog Audio Input/Output

Input Channel

8 balanced inputs Mic/line level

Audio Connector

3.81 mm Phoenix plug, 12-pin

Input Impedance


Phantom Power

+48VDC, 6.5mA per input channel

Input Analog Gain


Maximum Delay Setting Per Output Channel


Output Channel

8 balanced outputs line level

Output Impedance


Maximum Output Level


Audio Indicators

Frequency Response Curve

20Hz-20kHz (±1dB)


-85dB (1kHz, A-wt)

S/N Ratio

95dB (1kHz, A-wt)

Connection and Display

TCP/IP Network Port



Phoenix connector (for serial command control)


Phoenix connector (for serial command control)


Phoenix connector, for recalling machine archive (customizable function)

Indicator Light

Power, Link

Display Screen

IP address, version

Electrical and Physical Parameters

Power Supply

AC100V---240V 50/60 Hz



Net Weight

3.35kg, 4.3kg

Operating Temperature


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  • Tel:+86 020 37166520
  • Address:No.1 Xiahe Rd, Jianggao Town, Baiyun District, Guangzhou, Guangdong, China
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