http://www.vfepedals.com/yodeler The YODELER somehow crams a delay and reverb into one compact box, with independent mix level controls for each. Not only that, but an internal switch lets you choose if the reverb is in series (reverberates each delay repeat) or parallel and independent from the delay. This lets you use the Yodeler as a standard delay or reverb, as a reverberating delay, or as a reverb with infinite trails & pre-delay control.