Clarion CMM-20

Last updated: November 7, 2026

Clarion CMM-20
2.6/5#13 of 18 in dash and panel marine stereos
2.6

A solid two-zone stereo around $200 for a boat that powers its speakers from the head unit. Step up to the CMM-30 for color, SiriusXM and NMEA 2000.

  • 25 W x 4 RMSPower
  • 2Zones
  • IP66Water rating
  • 2.4 in monochromeDisplay
Check price at Amazon$206.77

Price checked November 7, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros
  • 25 W RMS per channel at a 1% distortion rating, strong for the price
  • Two zones and a NOAA weather band
  • IP66 front
Cons
  • Monochrome screen
  • No SiriusXM, app or chartplotter connection
  • 1-year warranty

The Clarion CMM family

Every Clarion CMM model we rank, smallest first. Ratings compare each against its own mount.

ModelPowerRatingPrice
Clarion CMM-20 (this one)25 W x 4 RMS2.6/5$206.77
Clarion CMM-3025 W x 4 RMS3.6/5$427.86

How it scores

The rating comes from 7 measured or published factors, each scored 0-100 against fixed reference points for its mount. How we rank explains each one.

Specifications

Model numberCMM-20 (010-03223-00)
Audio
Amplifier power (RMS, 4 ohm)25 W x 4 RMS
Zones2
RCA output sets2
Sources and control
BluetoothYes
USB playbackYes
Phone appNo
SiriusXM-readyNo
NMEA 2000No
Wi-Fi or AirPlay 2No
Weather bandYes
DAB+No
CD playerNo
Camera inputNo
Build
MountPanel cutout
Front water ratingIP66
Display2.4 in monochrome
Warranty1 year

Alternatives in this mount

Sony DSX-M55BT

An inexpensive single-DIN marine receiver with Bluetooth, USB and SiriusXM. Sony publishes too little about its amplifier and water rating to rank it higher.

Amazon $128
$128
1Single DIN

Compare

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