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I have a question. When making minor adjustments to a truss rod, is it necessary to put some pressure on the neck manually to help the truss rod do it's job easier? For instance, if I want to have a little more relief, is it absolutely necessary to put mild pressure by hand to facilitate a...

...not sure if I'm willing to sell yet, but would anyone be interested? It's a 2000 model, 2 channel, with the slip cover, footswitch, papers etc. Any offers?

Here's my MKIV in it's new home. George (gts) did amazing work. It was much better than I expected and was very high quality. It is built just as good, if not better than Mesa's own. I love it. The pictures...

$1100 including shipping through UPS. I'll accept Paypal or a Postal Money Order. The Preamp has been gently used. It's in excellent condition and includes the foot switch and all original printed materials. I'll pack it extremely well. PM me if you're interested and want pictures or more...

Hi, I have an early 90's Mark IV 1x12 combo. Did some of these NOT come with a fan? If I convert to a head, is it imperative that I have a fan installed?

Lately, a few times my Mark IV has been acting funny. It works fine for a while, then I'll put it on standby, come back and the volume is extremely low from all channels. Is it simply overheating, or what could this be?

When playing with a 5 piece band, doing metal-ish music, what volume do people play these things on?

Hi, I'm converting my Mark IV to a short body head to use with a 2x12. So, I'm selling the original shell. It's an earlier model, but in decent condition. A few minor nicks and scuffs in the tolex. Includes the 8ohm C90. PM me for details. Make an offer. Thanks!

I'm sure that this has been asked a million times, but how does one tell the difference between the two? I have a relatively early model 79xx.

Hi, I have a Mark IV short body combo. I was curious as to if anyone knew of a place that could make me a short body head to convert my combo. I don't want the rackmount kit, I want a short head. I'm curious to see if anyone has done this and what the cost was and where.

Hi, I just purchased a used Mark IV short combo. Here's my problem: The master volume on both of the Rhythm 1 and 2 does not seem to be 'effective'. The Lead Master is working fine though. I just re-tubed the head and I believe it was working before. I was curious if it had something to do...