Hi,
I build the echobase with a pcb from John Lyon. (great pcb although you really need some good eyes

)
It is a very nice echo and the modulation works great. (Slacker thanks for the project)
I have build a PT80 as well and so I can compare both:
I do like the fexibility that the modulation gives but the echobase does not sound as clean as the PT 80.
The PT80 has a very nice analogue like sound that only gets darker in the multiple repeats.
The echobase I build sounds already darker and a bit distorted on the first repeat.
I am using a guitar with humbuckers so the signal is a little hotter than with single coils of course.
Does this have to do with the compander that is in the PT80 design, that might deal better with a hotter signal?
Marc