FS: "CMOY Killer" Heaphone amplifiers - 500 milliwatts per channel @ 32ohms! - diyAudio
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Old 2nd September 2010, 08:59 PM   #1
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Default FS: "CMOY Killer" Heaphone amplifiers - 500 milliwatts per channel @ 32ohms!

Hey guys, I have started building some really excellent headphone amplifiers I like to call "CMOY Killers"

All they need is a power supply around +-15Vdc

CMOY KILLER Class-A Headphone Amplifier/Buffer 500mWpc! - eBay (item 190439206746 end time Oct-02-10 13:37:39 PDT)
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Old 3rd September 2010, 03:03 PM   #2
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$90 and no servo?
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Old 3rd September 2010, 06:40 PM   #3
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each of the op-amp devices costs $9-10. then include the board, caps, ebay and paypal fees, shipping, and the price is justified.
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Old 3rd September 2010, 07:14 PM   #4
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Why do you state "No input or output capacitors needed"? Since there is no servo, if a noob buys this, connects a source with DC offset, and proceeds to fry their headphones; will you reimburse the cost of said headphones?

Supply decoupling looks less than optimal. Did you bother to read the datasheets first?

EDIT: Nevermind about the poor layout, I see you didn't design it. It seems to be the same PCB jims_audio sells.

Last edited by theAnonymous1; 3rd September 2010 at 07:44 PM.
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Old 10th September 2010, 12:02 PM   #5
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Right, this is not my design. But heres what matters: it sounds great and is very powerful for a reasonable price.

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