How to open a Peachtree Nova?

I have the Peachtree Decco and if the construction is the same the way you do it is to take out the screws that hold the feet to the case. That will free the outer case from the interior metal case and allow you to slide the interior out from the rear by pushing on the front.

On my Decco a thin line of the exterior finish around the rear edges was acting as a glue to hold the two together even after the screws were removed but I was able to work it free.

You're welcome. It baffled me for awhile.

If the Nova is like the Decco and has an obnoxiously bright LED under the center of the tube socket you can put a couple of drops of fingernail polish on the LED to tone it down or change the color. The Decco has a bright yellow LED which looks nothing like the real glow of a tube but I put two coats of dark red polish on it, waiting for the first one to dry before applying the second, and the result is a much nicer, soft orange.

I swapped the tube in the Decco for a Telefunken 7DJ8/PCC88, which works fine, but I can't honestly say I can hear much difference between it and the stock tube. Since the 7DJ8/PCC88 tubes work just as well as the 6DJ8, and they're often easier to find at reasonable prices, you might consider them for tube rolling.

Yeah, I'm thinking of buying fingernail polish in bulk and selling tiny bottles of it here as 'Stanley's Stereophile LED Liquid' for $69 an ounce. Think there's a market?

I'm getting good at the process. I bought a Jolida FX10 which has six tubes, each with a bright blue LED underneath. It's a great little amp and it no longer blinds me after having the LED's turned to a deep purple by that same dark red polish.

Great point. I think a week in my freezer should easily add $30 to the value.

I know what you mean about the FX10. If I'd seen it powered up first I probably never would have bought it but I'm glad I did. It's a wonderful sounding little amp and exactly what I was looking for. I may have to put a third coat on those LED's, though. What were they thinking?

I would guess that the finish at the back edge of the exterior case is overlapping the edges of the interior case. That's why Danlib1 cautioned to be careful in chipping the finish. If you really want to get the case open you may have to use an Xacto knife or something similar to trim back the finish beyond the edges of the interior case.

I think the Decco I have is a great sounding integrated with a lot of flexibility but part of the reason it's so reasonably priced is that the construction isn't first-rate. I expect the same thing is true of the Nova.