As you suggested I "went to town" with my stanley knife on the whole board and now the hiss it gone! Thank you so much, can't believe how good my hack job sounds! :D

After a little testing I'm getting about 5v from the battery to the right output and 0.22v from the battery to the left input - so I think I've found the problem. I just have no idea where to start looking for where the voltage is missing.   Edit: I am getting a voltage between the left...

Funnily enough, most of those solder joints that look a little dull were ones that I did first time. The really shiney ones are the ones I've reheated a bunch of times (although with a 60W iron as opposed to my now disintegrated 25W).   I'll test the resistance when in that left channel when...

Pics are here: https://imgur.com/a/ZfQL5#LKiEM   I know my soldering is.... imperfect.... but I used my DMM at each step and all seemed to add up.

Ok, another weird thing to add - with the power OFF and the input volume up to max, I can very faintly hear the source.

Just had my first attempt at a hi-fi amp (as well as first attempt at any electronic project). Have been following Tangent's guide, using all the recommended parts from Digi-Key.   Amp works perfectly in the right earbud (although a very faint hiss - barely audible). However, the left earbud...

After buying my ATH-M50's, I've decided that my Sennheiser CX300s just don't cut it anymore for listening to music at work. I'm looking for something for really no more than £100, as I do most of my "proper" listening at home on my M50s. For about the past 5 years I've been buying the CX series...