Hello.

I'm liking the sounds out of the Spider IV 15, but am unable to record direct because of a loud, persistent noise from the record out port.  This is present even when the amp is not turned on - just plugged in to power supply.  Its pitch is roughly that of the D on 2nd string, and is at least as loud as the actual sound from the guitar at normal recording level.  It is almost independent of volume levels.  I've tried a couple of different power outlets, but no difference.  I noticed it first when plugging into my computer, but read in the forum that this is often problematic because of the mismatched signal levels for mic vs line-in, but I've also checked it with recording interfaces including the M-Audio FastTrack and get the same, which also means I can't use the record out to send to a mixing desk.

Is this an earthing problem, perhaps? If it's a fault with the amp, it's still under warranty, but if not, does anybody have other solutions to try?

Thanks,

Cameron