Why use a headphone amplifier? Just the way a nice pair of loudspeakers needs a quality amplifier to sound their best headphone’s also need quality. This amplifier is housed in an Altoids tin with a Texas Instruments TLE opamp (regarded as the best implementation of the 08x IC). Each amplifier is built to. Chu Moy designed a very popular headphone amplifier that’s easy to build, and it can be built small enough to fit in a pocket, power supply and all. It’s powerful.

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How to Build the CMoy Pocket Amplifier

Decoupling capacitors are placed as close to the amplifier IC as possible in ascending order of capacitance. Here’s my first test of the boards.

A battery at the end of its life degrades the audio quality of any amplifier. Everything I’ve listened to has sounded very good.

Ships from and sold by stevovee In my case, I was using the last altids I owned from the previous system Get fast, free shipping with Amazon Prime. Here it is mounted inside an Altoids tin.

I 3D printed a guide in order to drill the holes in the altoids tin properly. It really opens the soundstage and makes audio fuller with my AKG s. This amplifier is constructed with only high quality components. Now that I bought the Fiio X1 I don’t have to do that since it has a switch for either headphones out or power out which is significantly louder than HO.


See all customer images. Smooth and effortless reproduction of all the frequencies with tons of power on tap. The Front On the left is the output, on the right is the input, and in the center is the volume knob. Higher voltage enables higher volumes for high impedance headphones Rechargeable, 1×9: It is an audiophile class of high performance headphone amplifier and you will be amazed by the high sound quality it amplified and reproduced.

These items are shipped from and sold by different sellers.

How to Build the CMoy Pocket Amplifier

I’ve had this little headphoe amp for a couple of years now. Ideal for portable use of most headphones. Using a headphone amplifier will not only allow you to listen at increased volume levels but will provide you with much more dynamic, full sounding audio.

After a lot of work I ended up finishing the other 9! Here’s the finished design in EagleCAD! It ended up sounding fantastic!

No matter where in the world you are, these guys will take great care of you. All my amplifiers have a lifetime warranty.


CMOY Headphone Amplifier

High quality fully assembled CMOY headphone amplifier kit. Would you like to tell us about a lower price? See questions and answers.

Javascript is required to view comments normally. I ordered the parts from Digikey and soldered them on by hand. If you want everything to sound better or new again and you don’t mind a little extra gear for the trained ear to not have to listen to tinny or whacky audio get this and never look back.

Page 1 of 1 Start over Page 1 of 1. Amazon Advertising Find, attract, and engage customers. Learn more about Amazon Prime. Just the way a nice pair of loudspeakers needs a headphnoe amplifier to sound their best headphone’s also need quality amplification to sound their best.

Absolutely recommend this shop for high quality audiophile equipment. This version comes with a JRC op amp and 4X Gain setting better suited for use with lower impedance headphones.

Not all cmoy kits are created equal, others use cheap low quality parts and circuit boards.