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I've been having an issue lately where the sound from my Mark IV will fade out after about 20 minutes of playing then back in after about a minute. This happens on all channels as well as Tweed Power and Full power. I've changed the tubes, eliminated all pedals (Guitar straight to amp), and...

To tell you the truth, I don't think any single line footswitch will work to control all the Mark IV channels and options. But, you may be able to do what you are asking with setting the switch to channel 1 and using the footswitch to switch to the lead channel. The Mesa footswitch has a...

Well...tweaked the settings a little and things seem to be a lot better across all channels. Could probably use some more tweaking, but the enormous bottom end is now well balanced. Here are my settings on my Mark IV Widebody Combo FRONT PANEL TOP ROW R1 Gain 6 1/2 R2 Gain 9 1/2 R1 Treble 6...

The speaker is the C90 Black Shadow. The preamp tubes are Mesa STR-12 AX7-A's. The power tubes are Mesa STR-440 6L6 GC's. All tubes were replaced about 2 months ago. This bottom end thing has been going on since I purchased the amplifier and it's actually across all channels. There doesn't...

What do I need to do to brighten up my Mark IV? I've dropped the bass all the way down, boosted the treble, and set the midrange on 6. I've pulled the corresponding knobs out to brighten, but still there is too much bottom end. I've tried both of my guitars to see if there was any difference...

WOW, everybody is silent. Oh well, thanks anyway.

Just curious...what effects pedals are you guys using with a Mesa Boogie Mark IV Combo? I recently got the amp and was thinking about a Chorus, a Delay, and a Compressor/Sustainer pedal to accompany the awesome tone. Any suggestions would be appreciated. I just want to see what the general...

Lock this one up, please

Yep, I'm still looking. Anybody out there?

Yeah, I know it would be like asking a kid to part ways with his candy. But, I'm looking for a Mark IV combo loaded with the Black Shadow Celestian C90 speaker. Must have footswitch.