Mark IVa and G-Major levels

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Daniso

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Hey!

I got myself a G-Major unit today and hooked it up with my Mark IVa combo. I run it through the loop but noticed that it is impossible to get the levels from the G-Major to reach 3db.
My volume settings are master volume: 1.5, lead channel volume: 2.5. I have changed the input rng on the G-Major to consumer and still it wont go higher than aprox 18db. Also my switchable effect loop makes a really strange noise when i engage it, like a high pitched noise that wont let any effect come through. Could one of the preamp tubes mess up my levels?
 
Yes.

I suspect one of your preamps is causing your problem. I run a G-Major with my Mark IVA and have no problem with getting enough output or any of the problems you mentioned.
 

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