Soundstream HARMONY

31-Band Digital Sound Processor Powered by Cirrus Logic


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This item has been discontinued

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General Features:

  • 31-Band Graphic Equalizer powered by Cirrus Logic
  • Dedicated 8 channel DMA engine streams data without DSP intervention
  • Time Alignment:
    • Up to 16ms independent channel delay
      • 0.05ms increments
  • Integrated:
    • 105dB Dynamic Range
      • -98dB THD+N Analog-Digital converter
    • 108dB Dynamic range
      • -98dB THD+N Digital-Analog converter
  • Independent channel 00/1800 phase control
  • Custom intuitive DSP ComposerTM graphic user interface with response display
  • Up to -40dB independent channel level cut
  • Signal-to-noise ratio: 95dB
  • Includes dash mount remote control
  • Dimensions: 7-7/8"W x 5-1/8"D x 1-3/8"H
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Crossover Features

  • Independent channel, high pass, low pass or bandpass crossover
  • Selectable independent channel: 6dB-48dB/Octave
  • Variable Frequency Crossover: 20-20,000 Hz
  • +12dB Boost / -18dB Cut for each band
  • Variable Independent Band Q Adjustment: 0.5-9


  • 30V 4-channel high level/speaker level input
  • 192khz S/PDIF optical input
  • 8 channel low-level RCA output
  • Master input level adjustment up to +12dB/-18dB
  • Max Output level: 4V
  • 8V Max aux RCA input voltage

Check out the Soundstream HARMONY Owner's Manual

Line Driver Specifications

Signal Boost/Cut
The available signal boost or cut for each of the frequency bands.
+12/-18 dB
Max Output Level
The maximum level (in volts) of signal output. A higher level will increase the clarity and boost your signal.
4 volts
Speaker Level Inputs
Speaker level inputs are commonly referred to as high-level inputs and vice versa. This input type allows you to get your audio signal directly from the speaker wire in your vehicle, instead of using RCA cables. The advantage of this is factory integration, as most stock radios do not have RCA outputs to run amplifiers.
THD (Total Harmonic Distortion)
The amount of change in harmonic content of the signal as it is amplified. A lower figure indicates less change and a more accurate amp. THD below 0.10% is inaudible.
Signal-to-Noise Ratio
This spec compares the strength of the signal to the level of background noise. A higher value indicates less background noise.
95 dB
The width of the item from left to right (side-to-side) measured in inches.
The height of the item, measured from top to bottom, in inches.
The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating


Tracy, CA

Some glitches but great

January 1, 2016

This dsp has some occasional glitches. Every once in a while it likes to turn the sound up.

The quality of sound and x over is excellent. Many options. I am using to run a 4 way system.

A mobile app or tablet capability to run software would be great but wishful thinking.

Spdif will be useful soon as I plan to integrate a full pc with touch screen to my mobile system.

19 of 19 found this helpful

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Browse 3 questions and 4 answers
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Why did you choose this?
Sonic Electronix Store
Amazing audio control in a small package
Kevin M on Jul 16, 2015
What kind of laptop can be used? Mac Pro book?
A shopper on May 17, 2015
Best Answer: According to Soundstreams webpage.

Only Windows 7 and 8 are supported for this device...
Reply · Report · Michael M on May 17, 2015
· Add Answer · I Have This Question Too (1)
Can I still control my volume with my head unit control knob or do I have to use the sound processor control knob?
Trent M on Dec 8, 2015
Best Answer: Yes you can use the head unit volume, you dont have to use the plug in doohickey at all if you dont want to. Just set the master output level in the software and you are good to go.
Reply · Report · Ryan A on Dec 11, 2015
· Add Answer · I Have This Question Too (0)

Product Summary


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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Soundstream HARMONY

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Soundstream HARMONY

31-Band Digital Sound Processor Powered by Cirrus Logic


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