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Anything in particular you'd like to see? I'm not much of a video production person but I think I can come up with something

I’ve noticed that the paint on the chassis hasn’t been holding up as well as I’d like, it’s been coming off with minor handling. A little disappointing, but the metal shop didn’t do a great job centering the graphics anyway. Now I get to figure out a faceplate plan for these!

Yep! To make it switchable, you could do something like your lead bright pull on V4a cathode. 2.2uF is what Boogie used in the Mark IV for the mid gain harmonics switch if memory serves, as you drop the value below 1uF you will start to notice highs being accentuated

Thank you sir! Yes, I’ve seen pictures of multiple C+ amps with and without a cap installed there. I agree that it rolls off the high end

The circled green capacitor is the one I'm wondering about if this is helpful, I'd love to hear what value these are for anybody with a IIC+ simul amp

The amp is alive!! There are a couple minor things to investigate still but I'm happy thus far. I'm loving the pentode / triode switch, the amp is noticeably more compressed in the triode setting and pentode has some serious oomph. I've also had fun with the "Mid-Gain / Harmonics" switch that I...

Very cool! I greatly appreciate the offer and I may take you up on that

Thank you!! It was quite the project indeed and the primary reason why I wanted to make it available to others!

Only thing left is to wire the input jack and front panel pots. The last of the parts will be here Saturday so if I’m lucky I’ll be done wiring this weekend

Getting closer

From what I remember, the forward voltage is much higher on the Xvive VTL5C1 so it won’t really turn on when used in parallel with the Vactecs. There is also a 750 pF ceramic cap that could’ve failed, the pot switch, or the associated wiring. If you turn the power on to the amp, leaving the amp...

I think I made you an offer for this amp in April via Facebook messenger!

Back when I was scouring / testing, I decided they're not a good fit unfortunately. I was pretty disappointed that they are marketed as a direct replacement, they weren't even close from what I remember. Luckily Banzai music sells the real deal, NOS Vactec VTL5C1, three are needed to complete an...

Preamp board is prepped and ready for install. The LDRs tested well so I’m calling it good. I have to make up a few more switched pots and had to order more sacrificial resistive elements, should be arriving later this week. If all continues to go well I should have a completed amp in the...

Here is the current progress on the preamp board. Next step will be attaching some of the flying components and wires before install

I’ve got the preamp board started, time for the bigger components

Thank you!!

I’m working on a Mark style kit that’s based on a IIC+ DRG, it will hopefully be available soon and will not come with tubes

The preamp out jack is located after the FX loop recovery stage where the master volume shunt and EQ input come together. The tip of the jack is the EQ input, so anything you connect there will be in parallel with your power amp. The jack does not break the circuit, it’s a plain old TS jack, so...

Got the proto fired up last night for the first test, I ran the Triaxis into the underside preamp / power amp junction. All the power amp stuff worked as intended and it sounds glorious. It’s a bit of a rats nest currently, I will tighten up some of the wiring after everything has been...