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DIY Simple Headphone Amp Tutorial: Most Simply DIY Instruction on Cmoy Headphone Amplifier.
http://williamneo.blogspot.com/2008/03/most-simply-diy-instruction-on-cmoy.html
Sunday, March 23, 2008. Most Simply DIY Instruction on Cmoy Headphone Amplifier. Most simply DIY instruction on Cmoy Headphone Amplifier. As you can see the layout shown above, Please print it out by click on it to enlarge and save to print. Component Part List;. 2 x 47k ohms 1/4w (R1). 2 x 100k ohms 1/4w (R2). 2 x 1k ohms 1/4w (R3). 2 x 10k ohms 1/4w (R4). 2 x 100 ohms 1/4w (R5). 2 x 220 uf 25v (C1). 2 x 01 uf (C2). 1 x OPA 2227. 1 x 10 k Dual Pot (Volume Control). 1 x On/Off Switch. 2 x 9V Battery Cell.