![]() Lm3886! Also called gainclone after a ludicrous commercial amp called gaincard that used the recommended application notes off product sheet (so I've read) and then sold the amp for around $3000 in year 2000 dollars. But barring that a kit amp would at least be like the workbook problems and force me to think it through a bit and also validate it to some degree. If there is a build a virtual amplifier kit out there, that explains what each part does and lets you play with parameters, I would give that a shot first, since my current amps are certainly good enough. Everything seems to be for experts (here’s the diagram have fun! or here’s a circuit simulator. I tried playing with some online circuit building software, but I need more hand holding than that. I have this feeling like I’m just not getting it, which bugs the crap out of me. Or looking at circuit diagrams and they mostly make sense, but then certain parts don’t. I get in to discussions here or read them, about Zout and its impact on speakers and I get lost. Back in high school calculus, I remember never feeling like I understood until I successfully solved enough problems. I can read about programming language, but if I don’t actually code in it, it feels very fragile. While most have been fine, have had a couple of unsuccessful projects and that is not fun. Should mention that in all cases my DIY goal has always been to have a useful product in the end. ![]() In the end, a simple lower power amp like the Akitika might be educational, but is no substitute for years of experience IMO. This was before op-amps and is somewhat better now, but have read up more on amp design and understand why my EE buddies got cold feet. It never got built unfortunately as I wanted the experience as I think you do. I bought the parts to build and they backpeddled and said they would have to build it to ensure stability. When I was first hired (mid 1980s) some EEs had knocked off a Threshold amp. After some serious studying decades later, am still barely functioning when it comes to analog. That is when I switched to computer science as a major. After my first digital design class, was somewhat dismayed that it was not as clearcut as I expected. Being good at analog circuit design requires real experience.
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