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JDS Labs, Inc cMoyBB v2.03

Headphone Amplifier with Selectable Bass Boost, Auto On/Off, and Smooth Volume Adjustment Knob

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• Portable Headphone Amplifier
• Exclusive Bass Boost
• DC Auxiliary Power Input Jack
• Standard 9V battery
• Volume Adjustment Knob

Learn more about the cmoybb-tin

We apologize

This item has been discontinued

Description


JDS Labs, Inc brand icon

Authorized dealer

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
  • The unit can be used for listening while connected to the DC auxiliary power adapter
  • Blank mint-tin allows for complete customization and expression of personal style
  • Equipped with a standard 9V battery for reliable and easily replaceable power source
  • Aluminum tin protects electronics from EMI/RF interference
  • Volume adjustment knob does produce noise when adjusting while listening
  • Also found with a NiMH rechargeable battery

Technical Specifications:

  • Approximate Operating Time: 8-50 hrs
  • Frequency Response: 20-20,000 Hz
  • Dimensions: 0.82"W x 2.51"D x 4.56"H
  • Authorized Internet Dealer
  • 2-year Manufacturer's Warranty

Specifications & Details


Headphone Amplifier Specifications
Amplifier Style
Portable
Digital-to-Analog Converter (DAC)
No
Frequency Response
20 - 20000 Hz
Input Connection
3.5mm Mini-Jack
Output Connection
3.5mm Mini-Jack
Number of Outputs
1
Width
.85"
Height
2.51"
Depth
4.56"
Warranty and Return Policy
Parts Warranty Duration
2 years
Labor Warranty Duration
2 years
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

cMoyBB

Weight:

0.23lbs

Internal SKU:

cmoybb-tin

Internal Product ID:

46558

Customer Ratings & Reviews



5 star
67%
4 star
33%
3 star
0%
2 star
0%
1 star
0%



Durability
4.7
Value
4.7
Features
4.7
Design
4.7
Usability
5

Customer Reviews

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Good, but I question the default OPAMP

As far as CMoys go, this one is a pretty good design with good components. I'm not a fan of any bass boost (I prefer neutral) but it has a switch, so I just leave it off and it's no big deal. It's still a great CMoy design regardless. I do question the use of the OPA2227 as the OPAMP that it comes with (I've always felt like it had a pretty bad sound and, ironically, not so great at bass either) but it has a socket so you can put in whatever you want (and I was going to change it anyway since I love the AD8620 the most of all personally.) I think it would be better if it came with the more well-rounded OPA2132 (which is more or less accepted as the "default" OPAMP for CMoys normally) but in my case it's no big deal -- just not everyone necessarily knows about OPAMP rolling and might not think to change it.

The pricetag definitely hurts, but it does seem to be using a good design and quality components and there aren't many better sounding designs you can find for cheaper (in fact, the alternative I was using has disappeared from the market everywhere.) There's even some sort of bipolar transistor (or something which certainly looks like one) which I'm wondering if maybe is there to help protect from reversed polarities (the bane of my existence I swear) but I don't really know enough about them to know for certain and I'm definitely not about to test. (Most CMoy designs fry more or less every component if you accidentally reverse polarity even for just a moment, so I'm not going to test, lol.)

By Josh on November 14, 2013

10

found this helpful.

Great Product!

The item is of great value! It has a powerful bass that is great for watching movie. It produce great sound with Beats Solo headphone.

By Sukofu on October 26, 2014

11

found this helpful.

Hands down, the best Cmoy!

Met all expectations and more! Mine was built with care.

By Emiliano on October 6, 2013

5

found this helpful.

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