Here we go with one of my personal favourites. To me, the sound is simply amazing. As Dirk's notes on the schematic suggest, you won't be saving any money by building this. New ones sell for pretty cheap and one should be able to score a used one for a very decent price. I still wanted to see how compact i could possibly get this and yes, i'm rather happy with the results. I did cut a few corners though. I omitted the six 100n power decoupling caps from each opamp as adding those would have made this way bigger (let's just hope this doesn't add to noise floor). The input resistor is 12k on this layout, but to make it verbatim, you should take 5k1 and 6k1 resistors in series in its place - or a value of 11k2. I also dropped the 100k resistor and 47p cap from the output. If you want to add those, just solder them between lugs 1 & 2 of the Level pot. I also made a couple of small changes to the power supply section input. I burned the LT1044 on my original unit, and that was way easy to do. So i added series protection and a zener+100R resistor after that. Should be pretty fool proof like this. Charge pump produces +9V/-9V swing, so you're safe with your 16V rated electrolythic caps. Should be a nice fit for 1590B.
Snippet for the marketing text:
Sometimes it's best to keep it simple. Which is why, in a world of dizzying often over-complex technology, the durable, dependable, and simple stomp box continues to be the most widely used and effective means to expand, color, distort, mutate, sustain, and twist tone. The Ibanez BB9 is a booster that provides a fat bottom end with a powerful sound, perfect for the player who wants to push their amp into overdrive without losing any of their low-end. This pedal is designed to help clean tones reverberate even more and bring more intensity to a player's sound. Combine it with a distortion pedal to create of a wide variety of tone colors.
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