Wet Sounds 4-Band Parametric Marine EQ w/ Mounting Bracket
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Wet Sounds WS 420 SQ + Mounting Harware Package

WS 420 SQ 4-Band Parametric Marine Equalizer w/ 3 Zone Operation & Microphone + Mounting Bracket (WetSounds)

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Take Control of Your Sound!

Wet Sounds represents the ultimate in high performance marine audio. The Wet Sounds WS-420SQ is a state of the art equalizer specifically designed to provide you with outstanding control over your boat's sound system. With this half DIN EQ you'll be able to control your tower speakers and in-boat speakers separately. The WS-420SQ will completely transform your boating experience!

3 Zone Operation

3 Zone Operation

The WS 420SQ allows you to take independent control of your tower speakers, in-boat speakers and subwoofers. It also gives you separate EQ adjustments for your tower speakers and in-boat speakers so you can further fine-tune your sound. It is the world's first true marine audio zone controller/equalizer.

Nylas™ Frame

Transform Your System into a PA

Another feature of the WS 420SQ is that it allows you to turn your tower speakers into a PA system with the push of a button. The included talk back microphone allows the driver to easily and safely communicate with passengers and other boats by simply clicking the button on the mic. When engaged, the system automatically mutes the music.

Nylas™ Frame

Boat-Link for the Ultimate Cove Experience

Wet Sounds exclusive Boat-Link™ feature allows you to link up with other WS 420SQ equipped boats to create the ultimate party on the water. To link multiple WS 420SQs, all you have to do is connect them via the 3.5mm jack in the back of the unit. Once connected, the two systems will be linked and you can really get the party started

Wet Sounds WS 420 SQ

4-Band Parametric Marine Equalizer w/ 3 Zone Operation & Microphone
Quantity: 1

General Features:

  • 4-Band Parametric Marine Equalizer with Microphone
  • 3 zone control of tower speakers, in-boat speakers and subwoofers
  • Talkback microphone transformers tower speakers into a PA system
  • Master and subwoofer volume control
  • Subwoofer frequency and level control
  • Left and right gain adjustments
  • Boat-Link function allows linking to another WS-420 equipped boat via 3.5mm mini-jack
  • Conformal coated circuit board
  • Chassis mounted RCA connections
  • Red or blue illumination
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Product Specifications:

  • Number of Bands: 4
  • Signal-to-noise ratio: 80dB
  • Maximum Output Voltage: 5 volts RMS
  • Cut/Boost: +/-12dB
  • Frequency response: 10-40,000 Hz
  • Bass Equalizer Frequency: 100 Hz
  • Mid-Bass Equalizer Frequency: 300 Hz
  • Midrange Equalizer Frequency: 2 kHz
  • Treble Equalizer Frequency: 15 kHz
  • THD: 0.05%
  • Input Impedance: 20,000 ohms
  • Stereo Separation: 80 dB
  • Dimensions: 7"W x 5"D x 1"H

Want to Learn More?

Check out the Wet Sounds WS 420 SQ Owner's Manual

Wet Sounds WS-EQ IDM - S

Universal Silver Aluminum In Dash EQ Mounting Bracket
Quantity: 1

General Features:

  • Universal Marine EQ Mounting Kit
  • CNC Billet Aluminum construction
  • Durable silver powder coated finish
  • Mounting hardware included
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Equalizer Specifications

Type of Equalizer
This determines the way the equalizer processes the signal from the source unit. A parametric equalizer allows to you adjust the center point of the frequency band you are adjusting as well the bandwidth which can be narrowed or widened. A graphic equalizer has fixed frequency bands and bandwidth and only the frequency bands can be adjusted. A digital equalizer uses a software program to tune your system.
A graphic equalizer typically has more adjustable bands and is less expensive, whereas a parametric will have fewer bands but offer a greater level of control and provide more tuning options. Digital equalizers will tune your system with the most detail and precision but require a computer and are typically a little higher in price.
Equalizer Bands
The number of graphic or parametric equalizer bands the receiver has. The better the EQ, the more likely you will be able to "tweak" your sounds to your desire.
4 band
Display Color
The display color refers to the color of the text and or graphics on the receiver.

Multi-Color: When more than one color is on the display, for example one part of the text is white, while the other part is blue.

Variable-Color: The display colors can be changed by the user. If the default color of text/display is blue for example, the user can change the settings to where the color turns to red. Variable color displays are typically described in detail in the item's description.

TFT-LCD Display: In-dash receivers with a video screen that display multiple colors and often times video such as DVD, navigation or other video sources.

Red or Blue
Signal Boost/Cut
The available signal boost or cut for each of the frequency bands.
+/- 12 dB
Max Output Level
The maximum level (in volts) of signal output. A higher level will increase the clarity and boost your signal.
5 volts
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
10 - 40000 Hz
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.
80 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


Paola, KS

Final piece to the puzzle

December 1, 2015

The following review is for WS 420 SQ, which is a part of the bundle you are viewing.

Definitely worth the money, this EQ allowed me to get the perfect balance between my in boat and tower speakers. It also gives me the option of turning down my tower speakers when we are just cruising around. Love the PA system

0 of 1 found this helpful

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Accessory Tools and Products

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NVX XIV23 V-Series: 2-Channel RCA Audio Interconnect Cable

V-Series: 3m (9.84 ft) 2-Channel RCA Audio Interconnect Cable

Your Price $8.99

NVX XIX23 X-Series 2-Channel RCA Audio Interconnect Cable

X-Series: 3m (9.84 ft) 2-Channel RCA Audio Interconnect Cable

Your Price $11.99

NVX XIV43 V-Series 4-Channel RCA Audio Interconnect Cable

V-Series: 3m (9.84 ft) 4-Channel RCA Audio Interconnect Cable

Your Price $16.99

NVX XIX43 X-Series 4-Channel RCA Audio Interconnect Cable

X-Series: 3m (9.84 ft) 4-Channel RCA Audio Interconnect Cable

Your Price $24.99

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: Wet Sounds WS 420 SQ + Mounting Harware Package

  • Wet Sounds WS-420-SQ Marine Equalizer
  • What is an Equalizer (EQ) and How Does a Parametirc vs Graphic EQ Work?

Item Added to Cart

Wet Sounds WS 420 SQ + Mounting Harware Package

WS 420 SQ 4-Band Parametric Marine Equalizer w/ 3 Zone Operation & Microphone + Mounting Bracket (WetSounds)


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