More CMOY KILLERS now available!

[gripracer]

CMOY KILLER Class-A Headphone Amplifier/Buffer 500mWpc! - eBay (item 190460079967 end time Nov-22-10 15:06:14 PST)

These sold pretty quick last time I had them, they are simply one of the lowest distortion headphone amp designs I have ever seen, and they have an OVERKILL amount of output current ability

Thanks guys
-Ted

 

[maxw]

What's the gain? Got a schematic?

 

[jmillerdoc]

What type of power supply do you recommend for this? Regulated, unregulated, etc...

 

[gripracer]

What's the gain? Got a schematic?

voltage gain is 21, but I can make it any value you want.

What type of power supply do you recommend for this? Regulated, unregulated, etc...

Honestly anything will work, as long as it's bipolar, can deliver about 3 amps max, and anywhere between +-12 and +-18. The op-amps have an amazing PSRR, so power supply noise doesn't affect anything. Even a bipolar SMPS would be just fine.

I would just throw together a transformer, a bridge rec, and 2 decent caps. Easy.

 

[jackies]

Evidently, schematic is straight from the datasheet?
What exactly makes it Class A?

 

[gripracer]

Evidently, schematic is straight from the datasheet?
What exactly makes it Class A?

pretty much, except there are two buffers instead of one. using a buffer as an output stage after an op-amp forces the op-amp into class-a (always on).

 

[theAnonymous1]

pretty much, except there are two buffers instead of one.

....and no servo.