SparkFun will be closing early at 3:30 Friday 5/27 and remain closed Monday for Memorial Day (5/30). Orders placed after 2pm MT on Friday (5/27) will process and ship out on Tuesday (5/31).
guitar. Very quick. And dirty. In fact, it sounds remarkably dirty. The amp is
made from some junk I found in my basement, along with two op amp break out boards from (you guessed it) SparkFun Electronics.
OK, a very small amount of extra thought went into it. The op amp breakout boards are AC coupled on their inputs (necessary since I'm not running with a bipolar supply), but not on the outputs. So I did have to add one cap, a 100uF electrolytic to couple to the speaker.
The mounting logistics are just about as simple:
Following the first sound tests, I added the pots from the CB (first yanking out the original pots on the op amp boards), mounted a 6Ahr lipo, and gave it a blue LED for a power indicator:
Followed by more testing with our own Pete Lewis...
That's Choppy on the couch with Pete. I don't think he was all that impressed. And if you're interested, the guitar is a Music Man Silhouette Special.
The final result is one-of-a-kind looks with one-of-a-kind
sound. Does it sound amazing? Well, that depends how you define the term.
Honestly, I haven?t even bothered to put it on a scope to see what the waveform
is doing, but I promise you that it?s deep in saturation when it's cranked. With the knobs all
the way up to 11, it makes some truly profound noises. Turn it down and it's a pretty decent clean channel.
My regular amp is a Fender Blues Jr. With my little cheapo as a preamp, I expect some interesting results. Rock on, my brothers.