Hey guys, I've had this early model HD350 for years. But it had this intermittent distortion sizzle way in the background so I just had it mainly as a spare amp even though I like the sound of it very much. I read in one post on this forum about bridging the effects loop. It was said that sometimes the preamp in the older HD350s can have a problem and cause this to happen. I read that connecting the send to the return with a patch cord might fix this. I just did that to see what would happen and to my surprise the amp volume went up quite a bit compared to when I don't have that patchcord connected.I'm not sure if it's just the increase in volume but it seems to me that the amp sounds fuller and clearer with the cord connected. Can someone please tell me what might be happening here. Is this normal or is something wrong with my amp?