I was using my friend's Tascam 414 Portastudio to record some stuff. This was the first time I've used a 4-track recorder. I set the EQ's flat, turned the line-in all the way up but set the track fader and master fader to about 8 (as per the manual). After mixing down to a regular cassette, I noticed the output was good quality but very quiet. Is this by design? Is it a problem with my amp (an 80 watt Samick that makes my house rattle)? I didn't jack the faders to 10 because I read that you should have some play. Any tips?