Yup - Nearest to the Front (I should have rotated this to match the PDF)
NOTE: you can see the Volume & Presence knobs at the bottom of the PDF (just noticed that)

Not really sure, compare it with the pcb. But from what I can see the jacks are in the back so I "presume" that these are at the front. So double check it when the unit is open.

Thanks man!!
Correct me if I'm wrong, but does that mean the two closest to the FRONT of the unit? That's what it looks like
So, Q6 and Q7 are for channel A?

Here is the loadsing chart for the MT100, the power fet's for the B channel are Q106 and Q107 located on the bottom left of the PDF.

I've been using Macs forever. You can easily mirror your display or use the HDMI port to run a TV for a monitor, I have a 48" monitor (LED TV) hooked up to a 2015 MacBook Pro.

PCs are disposable, you rarely keep them more than a few years, then get another one. My Macs last me 10 years....easily. Why drive a VW when you could drive a Mercedes? 

More expensive? Sure. Worth it? Absolutely

Garageband will get you VERY far to record your ideas. If  you want to 'master' your tracks further, you can open Garageband files with Logic. Cubase is not all that different and you'd probably have a relatively easy time using Garageband.

FYI: I haven't seen a virus since the 90s, maybe it's happening in the background and I don't see it

People often ask about the rack rigs because they don't understand how that's a guitar amp....I describe it like this; remember stereo systems in the late 70s and early 80s? There was this approach to building a home stereo whereby you could mix/match components (tuner, amplifier, phono player, etc.)

Rack gear is the same philosophy, the Preamp is generating all the tones, the Poweramp is just making things louder, and you have an effects unit (or two, or more) to give you the shimmer. It's a component guitar rig. Use the stuff you like, make your rig.

Where the ADA stuff excelled, as Richard and Harley stated, was that ADA gear is fully programmable. That was unheard of until modelers came around. Well, you don't need a modeler with an ADA, you craft your own tones and just trust you ears.

AS to how they get the 'voices' described, I feel like it's a combination of tube circuitry (sometimes only using one preamp tube) and EQ. I think there are some EQ settings we're not seeing behind the scenes. I'm not technical, this is all presumption on my part (which can be very dangerous )

I've stated for years that Modelers are nothing more than fancy EQ settings to emulate the sound (or voice) of a particular amp

Hey Harley, unfortunately the idea MACs aren't affected by virus' or trojans or worms is a myth.  My day job includes researching vulnerabilities and attacks and MACs are right up there these days .  The myth comes from a time when the bad guys went for the biggest footprint, which is Windows.  Now everything gets attacked.  Moreover, worms were first developed for Unix systems, and the MAC OS is based on BSD flavour Unix.

The first thing I did when I got the MSI was uninstall Noton AV (seems to come on everything these days).  The anti virus anti malware built into Windows (defender? the name keeps changing) works fine, gets regular signature updates and doesn't get in the way at all.

One thing to be aware of if you go MAC, and hey they are great PCs, is the base models don't support multiple monitors, you have to go to the M3 Pro for 2 monitors or the M3 Max for up to 4. Either MAC or Windows you'll need a hub/dock thingy.  I went with this one (https://satechi.net/products/thunderbolt-4-multimedia-pro-dock) which works great. So it seems the biggest MAC display is 16", my MSI is 17" and it's too small for what we want to do.  So I have it in the middle with a 24" monitor either side connected via Display port which is a little better than HDMI albeit the hub/dock supports either.

Anyway, don't skimp on the MAC, it will cost more but go high end i.e. M3 Max 16" with as much RAM as it can take (min 64GB).  Hopefully Cubase will be happier on a MAC? that's where they came from way back when (as did Pro Tools). And more so the 18i20, it says it works for MacOS.

As you say, it's going to cost a chunk of change, as it has for me.  In the end I'm glad I spent the money as I now have an up to date system which works really well (little bit of future proofing LoL).

Hey INRI,

   Richard nailed it since he has a better understanding of electronics than I do. Even so, I don't need to be an engineer to see when I look in the MP-1, there is a LOT more circuitry than you'll find in any single tube amp, and this is only a preamp! Even with all that, the MP-1 is the simplest of all the preamps ADA made. There are a lot of mods that have been designed for them. I even own a 3TM MP-1 and to be honest, I really don't need much more than the original MP-1. Maybe I'm getting old, but that level of gain in the 3TM isn't really in my wheelhouse. I might roll some different tubes in it to see if I can tame it down a bit, and if that doesn't do it, then I'll probably put it up for sale. It does have a different character than the original MP-1, but it has no clean guitar sounds unless you go S.S.
  Pair any one of these preamps with a good power amp, and you've got a rig that will stand up to anything anyone else has.

   The MP-1 is the reason this Forum started and still exists. And the other ADA preamps and gear are just as good if not better.

Richard,

   Not easier for networking, but better. None of the virus' or trojans or worms affect Macs. They use a different system. Plus, I don't like the idea of installing anti-virus programs. Those things are running in the background constantly, and they eat up processing power in windows PCs. Nothing is more frustrating than being in the middle of a hot recording and nailing it, then all of a sudden your PC freezes. There was too much going on at the same time and it choked. I've lost count how many times that's happened.

   Yes, a Mac is a more costly investment. I can't argue that, but I will point out another fact. Just about every artist who is anybody, is using Mac. Is that just a coincidence? I think not. Anyway, after 30 some years fussing with win-blows and all the stupid additional software that you have to buy in a lot of cases, I'm ready for a switch to something different.
   I'll start with a laptop and see how it does with what I've got. I've already paid a lot of money for Cubase, and a few other software add-ons for it. I'd like to produce something out of it after all that.

   Oh yes, as a foot note, I was checking into a HP with windows 11 and what I needed for it to do, and it's right there at the same price as the Mac. Either way, it's going to cost me a chunk of change. No way around it.

Hey Harley, I hear you, like me you just want it to work. I have no problem with making things more simple, but I stand by what I said about MACs approach.  I like a scroll wheel and right mouse menus, that doesn't exist in MAC land (it can, MAC is based on BSD Unix but they don't.. ).  That aside, I just posted what I've done recently and it works which is where you are wanting to get to. All easy and now I'm functional.  I don't know if the Focusrite works with a MAC?  I do know (because I tried one) that the PreSonus is better (sounds better, better controls (e.g. level knob for each of the 8 inputs), and connects way better..).  Hey allot of this stuff was developed for MAC in the early days e.g. Cubase was originally written for Ataris running the Motorola 6800 chips set, same as early MACs.  MACs now run an Intel chip set BTW.  I'm sure you can get a MAC to work fine, but that direction is typically more expensive.  You made a comment about MACs being easy to network, not sure what you are basing that on but the opposite is the reality.

From my perspective, I'd just like to see you get a good system up and running, whatever you choose.

I will give a plug for Win11 though.  It's better in lots of ways to Win10.

When I fire up my system now, everything works. I have a hub thingy that drives 2 monitors (it can do 4) with lots of additional USB connections (type C and A) which connects to my MSI laptop via a USB C Thunderbolt 4, PreSonus connects to the hub, everything happy...  just saying.