“I have wanted a good delay effect box for a long time. There are uncountably many delay plugins out there, but hardware has its own merits. I had experimented with the concept of deeply modulated delay lines several years ago in a buzz effect called “ld zdelay”, and it would be lovely to have something like that in my hands, in a box.”
Read his blog: evolution of one design.
His write-up is a great example of the phases a design needs to go through before getting anywhere close to production.
Lauri also collaborated on our design guide document