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CMOY Headphone Amplifier

Headphone amplifier #2, #3, #4 and #5.

These headphone amps were constructed from instructions on Tangent's web site. These were made to get practice in using proto-board and to test various op-amps.


I tried various op-amps:

In these particular headphone amps, the op-amp proved very important to performance especially when using a single 9 volt battery.

Test power supply: 1x9V and 2x9V battery.

The noisy CD proved a problem with these amps. I assume they have poor noise rejection. The OPA2134PA op-amp was the only one that gave reasonable results.


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