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cMoy Headphone amplifier with standard enclosure

cMoy headphone amplifier kit with fancy aluminum/acrylic enclosure

(2 Reviews) akafugu

Designed by Akafugu Corporation (Yokohama, Japan)
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cMoy Headphone amplifier with standard enclosure 1

cMoy Headphone amplifier with standard enclosure 2

cMoy Headphone amplifier with standard enclosure 3

cMoy Headphone amplifier with standard enclosure 4

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cMoy headphone amplifier kit with fancy aluminum/acrylic enclosure

The cMoy Headphone Amplifier is a headphone amplifier kit suitable for use with portable audio equipment, smartphones, computers etc. The cMoy is a minimalist headphone amplifier based around a sin...

Rates to United States

Shipping Rate	First item	Additional items
Japan Post: Small Packet Air Mail	$3.60	$3.60

Review Breakdown

Average Ratings

Product: (4.00)

Documentation: (4.00)

Shipping: (4.00)

Communication: (4.00)

Thomas | March 29, 2016

Pretty nice

It's a pretty nice kit. Everything seems to be high quality. It has easy to follow instructions and didn't take long to put together. As far as function. I haven't had it long enough to really give it a test.

Daniel | Jan. 3, 2014

Enjoyable project.

PCB is laid out really easy and except for a few errors the online instructions walk you through the enitre build. Just check all your parts with the schematic. I did get sent the wrong resistors but was told that would help me out if I decided to buy from them again. Cost about 2$ including shipping to get the right ones from digi-key. If I continue using it like I have been I might hack it to plug in via USB or something. The nive volt thing gets old quick. If you've been thinking about a quick project this one is painless.

Response from Akafugu Corporation | Jan. 4, 2014

Thanks for the review, and sorry again for the component mixup.
If you send us an email with the instruction errors you found, we'll fix the page.

About running from USB:
The amplifier requires a dual supply of at least +-4V to run properly.
When running it on a 9V battery, +-4.5V is obtained by using a simple voltage splitter (using R2 and C1). Splitting the USB 5V PSU would only yield around +-2.5V, which wouldn't be enough, so to power the amp from USB additional circuitry is needed (for instance a DC-DC boost converter etc.)

Running off a 9V power adapter is possible though, but it might pick up 50/60Hz hum, so some extra filter might be needed for best results.