Boss LS-2

[headcrash]

Actually HR, why did you want to have the Jubilee’s loop „parallelized“? As primitively as it is designed, it works really well with most modern guitar effects with a high input impedance, using low capacitance, high quality cables.
Many FX devices also have mix knobs. If you‘re picky like me, you would maybe want your FX device to be analog dry through.