The CKK Soul Echo gives you the usual trinity of delay pedal knobs – Repeat, Time and Mix, but you also get a control to give you up to 6 dB of boost – not a crazy amount, but enough to give those lines a bit of an extra push when you need it.
Then you have the toggle switch. Offering a bit of extra movement to the delays, the filter the filter switch makes the Soul Echo an even more versatile pedal; we’re not talking huge amounts of wild modulation here, but simply another option for getting the character of the delay where you want it.