If he is doing an amp for himself, he might as well go with a "more expensive" regulator 
Actually, not all LM7815 are the same. In my local store I found one that went from 17V to 35V (input voltage). I'm sure you can find some similar somewhere (online?).

How high will the voltage to LM1875 be?

Interesting read. I've built a TDA2003 a while back and it was absolutely noiseless and did not distort with just guitar at the input. Maybe your pickups have much more output... or maybe my 18V supply helped with the headroom.

It's a really nice chipamp for bedroom-practice (with some nice preamp/pedals) :tu:

Will do!

I just noticed that tomorrow is sunday :duh so aluminium obviously comes the day after tomorrow

Exams are over, time to wrap this one up  :tu:

I've tinkered with the unused switch for the past few days and ended up using it for diode clipping. I know everyone using a boogey is going "wtf" :loco but it sounds good for my ears, so that's it. I experimented with clipping inside the tone stack after reading this cool AMZ article and ended up using two (3mm) green LEDs for treble and two 1N914 for mids, leaving bass as it is. This compresses mids and tames treble a bit, making a darker, smoother, and a bit more compressed sound. I like it on a V30 and hate it on a CL80

Now that this is sorted out, the labels can be created. I think it's time for me to learn aluminium (khm, aluminum for those in US ) etching. I don't want to etch the enclosure (removing all the pots and switches ) but instead create small "Alu labels" and glue them onto the enclosure (epoxy should do the trick). I think this is the safest way... and should look cool too  :tu: I already have ferric chloride, I'll get an aluminium sheet tomorrow 

Have you tried it with a battery? (that would be the first thing I would do)
Also, please post some photos, so that we can see the wiring :tu:

In my experience with high gain pedals (or preamps),
the problem was often with proximity of in/out signal wires.

My exams are finally over  :loco 

So, a couple of changes from my last post.
In the meantime I've finished my Dr.Boogey/TDA2003 amp (another topic) and learned a few more things. First, I made a "line out" as a buffered output right before the power amp and it works ok (two of them actually). I can hook them up to my Mesa 50/50 power amp and 4x12 cab for insane volume and sound. Next, the 3 watts I get from the TDA... way more than enough for bedroom practice (and recording) even at 1x12, but for band practice about 40 or 50W is needed. So, for my use, I don't see a point in building a 20W amp no more, and that means using a LM3886 chip. I will make a new topic for that, as it will probably have a lot of pics, schematics, pcbs. (and I will probably ask for at least a few advices)  :tu:

This was true even with my first ever electrical project: ruby amp... "pure" power amp distortion 

Thanks!
This is my first amp "head", so I really appreciate all the positive feedback :tu:

About the details. Well yeah, friends often call me... I believe the English translation is "nitpick" 
I always find inspiration in smart simplistic designs that just plain work. Both functionally and aesthetically.
Lots of pre-planning and attention to details are a great part of that, of course.

I would love to etch the symbols/writing, I even have some ferric chloride, but I don't think I have the balls  :lmao:
I never etched aluminum before, but intend to try it on my next stompbox. This chassis is only 1mm thick and I'm afraid of ruining it. I do have on the other hand a 2mm aluminum sheet. Hmm, I have some more thinking and drawing to do.

Since I'll be taking it apart to replace trimpots with fixed resistors, I might as well do something more challenging than simple stickers/labels 

This also means it's going to take a few more weeks until finishing it. Patience.

EDIT: yeah, the big one is the volume knob.
From left to right they are: gain, bass, mids, treble, presence, volume.

I have achieved the desired look of the wood... and made a matching logo
Only one thing missing now: the labels for input, outputs, pots and switch.

Latest pic with my simple logo:

You are right.. I guess I should have thought of this earlier.
Nevertheless, I found THIS nice tool that will help me match the resistance easier :tu:

It took me a whole day, but it's finally finished (construction-wise)  :tu:
This is the final photo before getting my hands dirty with black ink, hehe...



One thing I noticed is, that I have more and more random "waterfall" hum/noise. I'm sure the bias trimpots are the source, since adjusting them a bit helps for a while... looks like I will have to replace them with fixed resistors

The amp will have to wait a few days, because I have to finish another thing first... until then: here is the first sample.
Recorded on a 1x12 openback cab, center mic, one guitar on the left, one on the right, my random chugga riffs 
Settings were somewhere around: a bit too much gain, bass and treble  :loco

I tried that transparent acrylic stuff on it and it looks nice.
It even gives it a tiny hint of green-ish shade which is even cooler  8|

I'll report back in a few days, hopefully with some nice photos  :tu:

Wow, this really looks good  :tu:
The trick might also be in the high flame temperature of that "torch"... what I have is more of a orange-ish flame "burner", so the wood (and glue) heats up too much before actually turning black.

Well, I've tried another of my inks which I like best so far.
After a rough sanding it with a small piece of wet-sanding paper, this spruce suddenly looks a bit older, half rotten and beaten up 
I believe this decadent look could be just dirty enough for the sounds coming out this amp 

Here is the sampled surface (lower left part):
(upper part is overburned and not sanded... don't mind that)

While dripping blood is not a bad idea  burnt look would be even better.
The only problem is... my wood won't do that. It is not a solid piece of wood, but is made from smaller (2 inch wide) parts glued together. I tried that yesterday on a small leftover piece to see if the glue would hold, but it does not 

Also, this spruce wood burns faster than I can say "fire extinguisher"

I also tried to stain it with my fountain pen ink and achieved a really nice effect so I'll try it on a larger piece to see if it works.