Here's a cheeky Mag review:
Here's a demo of the Zenkudo Vs the Original Zendrive:
Here's some shots of the PCB:
And the schematic drawn by Soulsonic:
"[Quote] Greg_G wrote:
Yes. the 10nf forms a filter due to being placed before R1.. although it's set well below any fundamental tones from a guitar.
Remember, there's always a good chance with a circuit like this that the "designer" has little technical knowledge, and is just trying things and convincing himself it sounds better.
Don't think that because it's commercial it's well designed. [Quote]
You're forgetting the 470nf/470k 2nd pole. The 10nf is not isolated from these. Added up this would give you -3dB @ 41hz with the signal being down about -1dB @ 80hz. A small roll-off within the guitar range to tighten the bottom up a little. There's other ways of doing it (make the 470nf smaller for the roll-off while keeping the bleeder effect of the 2M2 resistor), but this is something you could hear."
Hmmmm, you make up your own mind - it's just a Zendrive with clipping switch and a different opamp if you ask me - Alf Hermida all the way...
Here's the freestompboxes.org thread for you: http://freestompboxes.org/viewtopic.php?f=7&t=4527