Update 03/2015: see this post for and alternative daughter board.
I have modded my Deep Blue Delay because I really think that having tails is an essencial feature for a delay pedal. I took the idea from the Merlin's Small Time Delay. By adding a FET analog switch at the input of the PT2399 we can bypass the input of the IC while getting the output in form of tails.
The analog switch is in a daugther board. Terminals A & B are interchangeable in the main and daughter boards. Using a DPDT on/on and a 3PDT footswitch we can select between buffered bypass with tails and True Bypass.
Using the layout by Mark the mod include adding a cut, moving one leg of a resistor one row down and moving one 1uF cap. The A and B wires have to be soldered in the middle of the board instead of on the side but there is enough room for them without moving other components.
This is the layout with mods.
This is the daughter board with the off board wiring.
I built mine without the volume mod, and this is how it's looking, with a few scratches on the paint but I like it.
In this pic you can see the daughter board next to the output jack.
