Surely there must be loads of people in here have a lead running from the line out of their guitar amp to the line in(or whatever )of their sound card.I have a Yamaha SW1000XG soundcard which has a preamp thingy in it.So ive tried my crappy Marshall valvestate line out to the soundcard and all i get is a loud hum,ive just bought a Mesa Boogie DC5 which just happens to have a 'recording' out socket on the back panel,great i thought,plugged a lead into this and into the 'line in' of my card,a hum again!although this time i did hear some distortion coming out of my pc speakers,so a signal is getting through,but why is it so crappy?Whats the secret to getting a good recordable signal from an amp to a soundcard?