Home Amps/DACS JDS Labs cMoy BB Headphone Amp/DAC Review | POWER PUPPY?

JDS Labs cMoy BB Headphone Amp/DAC Review | POWER PUPPY?

by Stuart Charles Black
Published: Last Updated on
JDS Labs cMoy Review

Updated 9/12/19

777 word post, approx. 1-2 min. read

Big Shoutout to JDS Labs for sending me this unit for demo. I am not being compensated in any way by them. I’m simply giving my impressions of the Amp/DAC. Read on to find out what I thought!

Hey there friend, and Welcome aboard!!

Before we get into the JDS Labs cMoy BB Headphone Amp/DAC Review, grab a snack, sit back and relax because..

You’ve come to the right place!!

JDS Labs cMoy Review

JDS Labs cMoy Review

What I will bring you in this review

  1. Specifications
  2. Build
  3. Features
  4. Ergonomics/Sound
  5. Photo Gallery
  6. Video Review
  7. Final Word

Now without further ado, let’s get rolling!!


JDS Labs cMoy


The build of the cMoy is very good considering it’s basically a repurposed Altoids can. It feels very solid in your hand. The input jacks on the front are very respectable, but the charging port is a tad wonky for my liking. Still, it charges fine and there are no technical issues with it. It’s more of a cosmetic thing.

JDS Labs did a great job assembling this unit. Plugging your headphones into the 3.5mm jack feels fine, and the 3.5mm line output is rugged as well.

Bass boost switch is fairly standard and feels good as well.



The only real feature on this Amp is the Bass Boost. Simply flip open the lid and flick the switch. It adds a tasteful amount of bass and isn’t over done like your mom’s meatloaf. 😛

I find the extra bass does well with headphones like the Sony MDR V6 and my HD600. Related: Sony MDR V6 Review!



Ergonomics & Sound

This amp does what it’s designed to do, and that is deliver a neutral, clean, and powerful sound to your headphones. The DAC chip is extremely good, and it’s a lot more powerful than you would think. Related: What is a USB DAC?

My HD600’s require 20mW of power to perform optimally, and the cMoy drives them with ease. As far as options, you have:

  • Standard 1x9V: This is similar to the power output of a smart phone. Battery is not rechargeable.
  • Standard 2x9V: This is likely the model that I had. It works better for headphones 120Ohm and over.
  • Rechargeable 1×9: This comes with integrated charging circuitry and powers most headphones.

Paired with the HD600 I was completely satisfied with volume level and didn’t desire any more. The cMoy is a definite upgrade over my phones internal DAC as it will not drive the 600’s to acceptable listening levels.

Sound quality is very clean and neutral, which we’ve come to expect from JDS Labs products. Make sure that you use a very short 3.5mm interconnect cable to eliminate noise and distortion from your PC/Laptop or phone.

Hook it Up

Just plug one end of the 3.5mm interconnect into your phone or laptop, and the other end into the left jack on the front of the unit. The headphones plug into the jack on the right. Turn the volume knob clockwise to power it on, and you’re ready to go!


Photo Gallery

Power Jack and LED indicator.
Volume Knob, Line Out Jack and 3.5mm Headphone Jack.
Guts. You can also see the bass boost switch in the middle of the DAC Chip.
Another look.
One more with Power Brick in the Background.


My Video Review

Don’t forget to like, comment, and subscribe to my growing channel! Any support is much appreciated 🙂

Final Grade

There’s not much more to say about this little beast. It does it’s job admirably, and sounds clean and pristine. Power jack isn’t perfect, and I would have liked a gain switch, but those are minor nitpicks.


Well that’s about it for today folks! I hope you’ve enjoyed this JDS Labs cMoy BB Headphone Amp/DAC Review and came away with some valuable insight..

Do you need any further clarification on anything? Did I leave anything out? Let me know!!

Questions? Comments? Requests? Did I miss the mark on something? Let me know in the comments below or Contact me!! I would love to hear from you..

Until then, all the best and God bless..





Can’t decide which headphones to purchase? Interested in a complete buyers guide outlining over 40 of the best options on the market? Click on over to the best audiophile headphones to learn more!!

Be sure to also check out my Reviews and Resources page for more helpful and informative articles!

JDS Labs cMoy BB








Ease of Use



  • Easy to Use
  • Insane Value
  • Loads of Power
  • Fantastic Sound


  • Connections are a bit loose/wobbly

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