So. It seems I have been bitten by the amp building bug. After I finished my Princeton 5F2A Frontman conversion I have been itching for another project to get into. Also since I've had the Princeton finished I discovered that I don't really like pedals anymore, there is something that guitar straight into amp does that I love which my pedal board doesn't give me. My main overdrive usually is a Bluesbreaker mk1 clone I built, so I've decided I'm going to build an amp to do this instead. Also I like the idea of a mini JTM45 style head. I'll be building everything from scratch, chassis and cab. I've started collecting parts already, transformers are here Hammond 370AX PT, 155H Choke and 125B OT. Mainly I got these first so I can start planning the dimensions on the chassis and head cab. I'm sourcing the rest of the components from Modulus in the UK, although I have laid the wiring diagram out in Illustrator and added a few mods/changes so I want to make sure I have enough of everything before placing the order. I originally wanted to stay true to the look of a JTM 45 with 4 inputs and planned to use the FX loop to do this. I know Rob moved the FX loop after the volume pot due to noise issues from other's builds. I was wondering if using shielded cable to V2A grid stopper might help this? See the grey wire in the mock up below. Admittedly I probably won't use the effects loop that much, if at all. So I'll probably not include it. But still undecided. The switchable bright cap seems a much better route to go for me. So I made a version with this instead of the loop. Again I'm a sucker for aesthetics, I will be using a full size toggle switch for this. So I have added 1 more input over Rob's layout and another V1A grid stopper. I'm also going to do the tone bypass Raw switch with a switched Bass pot, this cleans the wiring up and does away with the need for another toggle switch. I've added a bleed resistor to B+ as these make a ton of sense to me. If anyone see's anything out of place please let me know, I have literally copied Rob's layout and twekaed it ever so slightly. I'll be using a kettle lead to go along with Marshall styling, also makes it easier to wire. I'll be reducing the bypass cap as I'll be using humbuckers with this a lot. Size wise it will be 450mm wide by 180/190mm tall and the same again deep, (Approx 18 x 7 x 7 inches) this shoud give me more than enoguh room. I added transformer and tube dimensions to the mock up to sense check it. I'm going to make the chassis out of aluminium this time I think, much simpler this time all being 90 degree bends. I'll be drawing up the chassis soon. And I've not yet decided on the logo, maybe I'll do the script?? Thanks for reading, hoping to get properly started in the coming month or so once I've got my current little projects done, namely refinishing my tele in nitro.