cool, is it very clean?
Yes, very clean, wonderful to plug in any effect!
That's a good point, indeed. I made some trials with the LM386 and none of them were satisfactory for a reasonably audible clean power
on guitar, even if I noticed that the speaker had an important influence on the result - I speak about small/miniature speakers, not guitar speakers, indeed !
Here's what I tried for guitar. it wasn't interesting... nor in power, nor in tone... I also tried the Smokey amp : it was the less bad, but not worth...

Conversely, I could derive from it an excellent battery-powered stereo monitor for my PC, very good sounding and powerful, with a volume and a tone control, using 2xLM386 (= 1 per channel) :

But connecting a guitar on that monitor gives inexplicably bad results : saturation, low power output...
A+!