This latest version of the Little Lehle can use stereo ins, outs, sends, and returns, with TRS adapter cables (pro snake TPY 2003 JBB).
Great.
Build quality is excellent, the foot switch is great, this should be the standard for all pedals - so much better than the switches in most pedals.
Sound quality is completely transparent.
I have used another Lehle pedal, a Parallel L, for many years, these are built to last. Highly recommended.