I got a problem with my Korg DTR-2 Racktuner. I have the guitar going directly into the tuner, and the tuner out leads to my Rectifier head. No more effects. The problem with this option is that I've got a very loud humming noise all the time when a distorted channel is selected.
Can I avoid that somehow, it's really awful. I want the tuner before the amp, so I can use the mute function of the tuner.
thx

It sounds like you're getting a "ground loop" from going into two devices.

A "cleaner" solution would be into a specially designed splitter that eliminates ground loop and send the signal to both the tuner and amp seperately. Most of these have a foot pedal that lets you still tune silently.

ToneBone, Framptone and others make these sort of boxes. Be careful not to assume a regular "A/B" splitter will do it... often they lack the ground loop removing circuitry.

Another option is a volume pedal like Ernie Ball's... used by many pro's it has a splitting function that shouldn't "buzz"...

Good luck!

guitplayer

Hey Daveman,

Listen, I don't want to insult you with simple answers if you've already tried them, but I just wanted to save you some quid before you invest in more expensive solutions.
Make sure your cords are all good. Plug each directly between guitar and amp. If no problems, cords are fine.
I also assume that the output of your tuner does not make this noise going into other amps.
I believe that Rectifiers have effects loops. Try running your tuner in between the effects send and return. See what happens. Some guys will tell you not to use the effects loops of tube amps especially if the drive and recovery are internally operated by chips instead of tubes. They say if takes away from the purity of the tube sound. If you can't hear a difference don't worry. Some guys can hear grass grow. Note that you've introduced a solid state device in the chain via your tuner no matter where you put it.
These are just simple, quick things to start with. If the problem persists, e-mail me. There are still plenty of solutions before you invest any money at all. Fortunately you have a tube amp and that is my specialty. Let me know how you do.

Murf
Murf.