Hey everyone, sorry I've been AWOL for a bit, 95% of my day job involves me sitting in front of a computer so I have Talkbass in front of me all day, but the past couple days I've been in the lab with no computer.
Anyway, re: noise. I know my pedals aren't the only pedals on the market that cause noise with other pedals, but because of the weirdness involved in converting 9-12V into 230-350V, there is an oscillator sitting inside of every single pedal I make, which means there is noise being generated. The oscillators operate at a frequency above audio range, but as discussed several pages ago when you have multiple oscillators going at different frequencies in series the high frequencies cancel out and the difference in frequencies is left as noise.
I'm continuing to add more filtering to the power supplies in newer units, but the fact of the matter is that the power supply design is imperfect; it was originally designed to run nixie tubes (google if you aren't familiar, they're pretty neat) where audio noise isn't an issue, and pedal builders discovered it was "good enough" to run audio tube circuits. I continue to use this design as I haven't yet found a better one, and while I hope that someone will design a better high voltage converter so I can stop using this one, in the meantime I continue to hope that enough filtering and the right kind of filtering will get rid of the problem. It's clear that I'm not there yet.
People have discovered ways to get around the noise that occurs when running multiple Sushi pedals in a chain: buffers, noise gates, loop switchers, or even just rearranging the pedals in the chain; but I agree that ideally these shouldn't be necessary. Ideally any pedal should be able to work in any position with any other pedal next to it without any effect on noise level. I obviously can't promise this, but I'm doing the best I can to make it work. I understand that some feel like my customers are my beta testers, and I apologize if it feels that way. I'm one guy building these by myself in my basement, and I want everyone to like them. I will continue to try to make improvements in an effort to make a better product, but I'm far from perfect, and I don't always catch everything. I will always do everything I can to make it right, and I will continue to try to learn from mistakes and shortcomings to try to improve. I said before that product quality is my first priority, but I think realistically customer satisfaction is my first priority. Improving product quality is one of the best ways to keep customers happy, but from the beginning I've always just tried to do right by the people that buy my pedals, and I will always continue to do that.
Sorry for the ramblings, I'll try to be around to answer any questions or comments because I do care about what you all think. I'm off to grab lunch now, I'll swing back by the computer and eat here before I head back to the lab.