JDS Labs cMoy (cMoyBB v2.03)

Rechargeable Headphone Amplifier with Selectable Bass Boost, JDS Labs 12V Adapter, and Auto On/Off


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Modernizing A Classic

JDS Labs is a relatively young manufacturer, with wisdom far beyond their years. A Personal hobby turned obsession, and finally evolving into one of the most innovative audio accessory manufacturers of the modern era. The original cMoy was really the beginning of it all. Small enough to fit in the palm of your hand or pocket, using quality parts at an affordable price, and delivering "Eye-Opening, Jaw-Dropping" sound quality, it was destined for greatness. Once audio community got wind of it, it was love at first sight. As time went on, the cMoy continued to get better, and better. So good, that imitators even started making "knock offs" or "clones" (Beware of UN-AUTHORIZED RESELLERS). Now available in a variety of options, the JDSLabs cMoy (cMoyBB) can be purchased in two different designs, with or without a rechargeable battery in both designs. Plain Silver Mint Tin, or the All-Time Classic Altoid Mint Tin. Both are sure to turn heads everywhere you go. Its the best thing that has ever happened to headphones, and headphone amplifiers. This is one wagon you must jump on!

What's In The Box?
  • JDS Labs cMoy Rechargeable Headphone Amplifier
  • Rechargeable 9 Volt Battery
  • Standard AC Charging Cable Adapter
  • Owners Manual & Users Guide
  • Authorized 2-Year Warranty

Product Features:

  • Portable Headphone Amplifier with Exclusive Bass Boost
  • The bass boost switched can increase sound up to 9.4dB, which amounts to a doubling of the perceived sound
  • Unlike most cMoys with protoboards, JDS Labs uses printed circuit board (PCB) for clear signal transfer and minimized signal distortion
  • JDS uses only the best power instruments in order eliminate noise and poor signal transfer
  • Equipped with a DC auxiliary power input jack compatible with any regulated 9-24V adapter with 1.3mm x 3.5mm DC jack, for recharging
  • Includes the JDS Labs, Inc 12VDC Power Adapter
  • The unit can be used for listening while recharging
  • Blank mint-tin allows for complete customization and expression of personal style
  • Equipped with a NiMH battery for reliable power retention
  • Aluminum tin protects electronics from EMI/RF interference
  • Volume adjustment knob does produce noise when adjusting while listening
  • Primary Color Tone: Silver (Brushed Aluminum)
  • Manufacturer Part Number: cMoyBB v2.03 (cMoy BB)
  • Also Found As: JDSLabs cMoy Amp, J.D.S.Labs cMoy Amplifier, J.D.S. Labs cMoy Tin Amp (v2.03r), JDS Labs cMoyBBr Amp
  • Rechargeable 9v cMoy Amp Also Available In: Altoid Mint Tin (Rechargeable)
  • Also Available with a standard 9v Battery in Blank Silver Tin , and Altoid Mint Tin
  • Authorized Internet Dealer
  • 2-year Manufacturer's Warranty

Technical Specifications:

  • Product Series: cMoyBB (cMoy)
  • Product Version: 2.03/2.03R
  • Frequency Response: +0.01, -0.01 dB 20 - 20,000 Hz
  • Power & Volume Control: Alps RK097
  • Volume Potentiometer Taper: 3B
  • Audio Features: Bass Boost Switch
  • Bass Boost Performance: 9.4 dB
  • Custom 2-Layer PCB: Compact Layout with Ground Plane
  • Texas Instruments OPA2227 Opamp in Gold-Plated DIP Socket
  • Texas Instruments TLE2426 Precision Virtual Ground (2x optional, See Manufacturer)
  • Power Supply: Battery or AC Power Adapter (Both Included)
  • Decoupling Capacitors on All IC Supply Pins
  • Battery Type: 9 Volt
  • Battery Playback: 8 - 50 hours (Varies by Usage and Battery Capacity)
  • Approximate Dimensions: 0.82"W x 2.51"D x 4.56"H
  • Approximate Weight: 86.75 Grams (3.6 Ounces)

Headphone Amplifier Specifications

Amplifier Style
Some headphone amplifiers are designed to be portable and others are meant to be placed on a desk. This will tell you what style of amplifier this item is.
Digital-to-Analog Converter (DAC)
A Digital-to-Analog converter (also known as a DAC) converts a digital audio signal into an analog signal. This is especially helpful for listen to music from digital sources, such as iPods and smart phones.
Frequency Response
The range of frequencies the amplifier 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).
20 - 20000 Hz
Input Connection
This is the manner in which the headphone amplifiers receive an input audio signal.
3.5mm Mini-Jack
Output Connection
This is the manner in which the headphone amplifier will output the audio signal.
3.5mm Mini-Jack
Number of Outputs
Some headphone amplifiers have a built-in splitter so multiple pairs of headphones can be connected to it. The number specified here is the number of headphones that can be connected to the amplifier.
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.

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
2 years
Labor Warranty Duration
2 years
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating



really happy

April 16, 2013

Adding my JDS Beyer D to my T990 or my sleek audio SA1 expanded the soundstage and really brings clarity to the music.
I am really happy.

5 of 7 found this helpful

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Product Summary


Model Number

Rechargeable cMoy Amp



Internal SKU


Internal Product ID


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: JDS Labs cMoy (cMoyBB v2.03)

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JDS Labs cMoy (cMoyBB v2.03)

Rechargeable Headphone Amplifier with Selectable Bass Boost, JDS Labs 12V Adapter, and Auto On/Off


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