Focal CMS 40 Powered Studio Monitor (Discontinued)


92 out of 100. Incorporating 80+ ratings and reviews.

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Focal CMS 40
Focal CMS 40

Meta Analysis Overview

Our rating of 92/100 is based on analysis of 80+ sources comprised of online reviews and discussions. Under the Pros and Cons headings below you'll find a condensed analysis of what those owners and users have been saying. Feel free to ask questions or add your thoughts in the comments section.

The Focal CMS 40 is a compact yet versatile studio monitor designed for near field use in small studios, or as satellite monitors for studios with bigger/multiple listening areas.

It sports a smaller 4" woofer, and 1" polyglass cone tweeter with a max SPL of 97dB, soft enough for long mixing sessions, while keeping the same attention to detail that the bigger CMS models provide. Note that because of its smaller woofers, it may not have the same bass response as its bigger siblings and you may want to pair this with a Studio Subwoofer if you need to mix bass heavy music.

To make this monitor compatible with different room types, Focal added low and high frequency shelving filters with adjustable frequencies. And in anticipation of being used as a portable monitor, the cabinet is crafted from die-cast aluminum.


  • Driver: 4" Woofer, 1" Dome Tweeter
  • Amplifier: 25W LF, 25W HF
  • Inputs: 1 x XLR, 1 x RCA
  • Frequency Response: 60hz-28kHz (±3 dB)
  • Enclosure: Ported
  • Controls: LF Shelving, HF Shelving, Input Level, Input Trim
  • Dimensions: 9.38" x 6.13" x 6.13"
  • Weight: 11 lbs.


The Focal CMS 40 exceeded the expectations of many of experienced users, with some reporting that it surpassed their premium power amplifier plus passive monitor speaker setup. Many described it is as natural and open sounding, and very easy to setup, without any control complications. A good number of reviewers and experts commended it for its ability to improve the overall mixing process.


As mentioned this doesn't have a deep bass response but a subwoofer can be added.


The Focal CMS 40 is highly recommended for those who are looking for a high quality plug-and-play compact and portable powered studio monitor.

We were featuring these monitors on our recommended list until we did a major revision of this category in April 2018 at which time we decided to recommend the slightly higher rated and more versatile option from the same manufacturer instead: Focal Alpha 80.