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What I wanted to say originally before this thread went on the deep end. The basic mark lead circuit has remained very much the same since the IIC+ came out. Some variations on that circuit may have combined the two triode gain stages into one tube location and then the design shifted back to...

For those who do not understand relative humidity thinking it cannot affect the tone of an amplifier. It can. I doubt the air density in the environment if indoors is that dramatic but sure it can affect how sound travels in the air and humidity can play a part on that to some extent...

I have only seen them used on rack mounted setups. A few members make use of such as I have seen them on their rig posts. I can see needed one of those power regulators for use with gigs and shows and that sort of thing. There are other regulators from Furman. I did not realize I picked...

Ok, Fine, if you want to call me a troll go ahead. I did not single anyone out as a troll, so sorry if you felt targeted. Variac or adjustable transformers will still transfer line voltage fluctuations. They are helpful in keeping the higher voltages at bay but will just mimic the changes...

If it dramatically changes that much, it could be something with the amp. I would hope it would be tubes as they can be replaced. If it is voltage from the wall outlet, the next question would be does it seem to occur at a specific time of day? If there is that much drift in the voltage...

I wouldn't touch it with a 10 ft pole. Everything can be an impact on how we hear things. What influences sound pressures created by the speaker: Relative humidity, this is more of an issue if you are playing outdoors than indoors in a small room. Still, having high relative humidity...

+1 on this topic

I will start off with a welcome, and a thank you for serving our country. (y) And my apologies for posting a long post... Perhaps I am still on the Honeymoon phase or not. I feel the Mark VII is worthy of ownership. I am one who is rather conservative on spending habits. Well...

I have far more than what I have shown you. Just look at the bottom of my post. I have too much but yet not enough. I assume you have a Badlander based on your original post? It is very much on par with the Mark VII. Not far off from the Mark V90. The difference is how the lead drive...

Good to know.

The Mark V90 method of channel change logic would not be suitable for running parallel to two amps. Not only would you be coupling the power supplies to each other by some common link, it probably would not work. The Mark V90 uses a voltage level to address channel switching when using the DIN...

I can say this, there are some similarities between the Badlander and the Mark VII. Clean channel is almost similar but I can dial in more grind on the clean with the BAD than with either of the two clean modes on the Mark VII (clean and fat). Crunch on the BAD also covers a wider range of...

Volume pedal may work. I have not tried that yet. You need to find one that is compatible with line level signals. Not sure if that will do the trick or not. The channel volume controls on all channels make use of a dual pot, I assume one is either early volume or could be in front of the FX...

Badlander is a different amp, even if there are some common circuits such as the lead drive circuit in the preamp. Totally different amplifier in how it is structured. Tone stack sits in the wrong place to have the full Mark sound, also it uses a dc coupled cathode follower tone stack driver...

Yeah, the STR440 are quite different compared to the other two. Depends on the amp in question when I like them or hate them. I was just making a generalized comment based on what I personally experienced in the past. I have not ventured into the IR stuff, but power attenuators, tried that. Did...

I would agree with only one comment thus far, chasing tone with tubes can be expensive. Just as much as falling into that rabbit hole that speakers make a difference and tone woods of your instrument. Depends on the amp in question, tubes can make a huge difference with some more so than...

Not sure on the OT, depends on the plate voltage you end up with. Keep in mind that the export models run on 50Hz. Those transformers will also have a higher efficiency and may run a higher output voltage when used at 60Hz compared to transformers for the US market. That higher efficiency...

Finding out what you have would be the best start. The last thing you would want is to be taken advantage of. There are some models of amps that have a high value to them. You may be able to get some information from Mesa customer service through email if you can share the serial number, and...

Sounds like power tubes are just not happy. I had a good new set of power tubes to try out in my JP2C, nothing but static. The original power tubes I had in it developed a static noise off and on, sometimes I would never hear it, then it would become an issue and that is all I would get. That...

My toy is a bit more modern. Yes, I have hit the drag strip with it, almost every Friday night when the track was open when I lived up in PA, we (friends) drove up to Island Dragway in NJ to hit the quarter mile. Since I moved to NC, there is a local drag strip in town, just a few miles...