i just got back into diy after a year's break. i decided to start with a new psu. 240V in 3-22VDC out. its got two sets of outputs. the one on the right uses a 12 throw switch to choose preset voltages (i know, i havent put any markings on the front panel yet). the other side uses a 10 turn 5k...

i have finished my first cmoy breadboard layout, but the only op amps that i could find locally are NE5534N made by philips electronics. i have looked at the datasheets, but dont really know what parameters to compare with the original TI chip. does anyone know if these chips are the...

just wondering if anyone has bothered with the "boostaroo"? from what i have read on their site (http://www.boostaroo.com/), it does not seem to be a serious headphone amp, but the advertised function is inline with what we are all talking about. it would be interesting to take one apart...