amp hum!

Ah the dreaded hum problem...does it do it even with your Les Paul?  If so, and ground lifts aren't helping, try checking and making sure your cables are in good shape and of good quality.  Also if your amps are on top of each other or too close sometimes that can cause some humming issues due to the amp's transformers being close to each other.  How old are your tubes?  Have you changed the tubes recently? Maybe try decreasing the amount of gain you are using.  Too many players slop on the gain and wonder why the amps hum so bad.  Do you have any other amps that you can compare with your guitars to make sure it's the amps?  Also, what are you using to split the HRD and Hiwatt?  Unless you are using a HIGH quality ABY selector or splitter you will get terrible hum.  I use quite a bit of gain, two heads that sit right on top of each other, tons of pedals and cables, and an ABY pedal.  My rig is just about silent when I'm not playing.  The thing that saved me was a quality power strip that has a power conditioner and my Voodoo Lab Amp Selector.  The ground lifts on that baby really do get rid of amp hum and just makes the rig sound cleaner than any other ABY pedal I've ever used.  Hope this helps.  Best of luck!

                   -Justin

What I would do is plug a cable that you have that seems reliable straight into the amp with nothing in between.  If it's humming like mad you know that one is shot.  Then repeat the process with every cable you have, even patch cables if they are long enough.  It's not economical to just run through and replace 10 cables with brand new Mogami's if all you need is a few well made replacement cables.  That being said, it sure makes a huge difference when you have all new cables!  I'm still in the process of weeding out the cheaper stuff to improve my sound.  I personally use Monster and Planet Waves and have had no problems.  They sound great and carry lifetime warranties.  All I have to do is walk into any GC and they'll hand me a brand new one, no questions asked.  Mogamis are good, and George L's kill if you have the money.  I'd stay away from Fender, Dimarzio, and the no name brands because in my experieces they just don't last.  Let us know if that works out for ya man!  Good luck!

Ive been using http://www.activemusician.com/item--MC.HOT6-0SL these for sometime now they have been really reliable for me. Planet Wave cables I've used just seem to break too easy aand then you cant really fix the bloody things if they do.... and they are far to expensive..
Just my opinion