Check the listing for details. Catalinbread Sinkhole Ethereal Reverb Pedal. Condition: Used. Listed at 179.99 USD. Sink to the Depths of Mass Modulated Reverb At its core, the Catalinbread Sinkhole Ethereal pedal offers a lush reverb that’s vast and consuming as it pushes atmospheric limits to reveal sinkholes of decay. With the maximum settings selected, you’ll find that the Sinkhole Ethereal reverb’s notes ring out almost infinitely with pad-like sustain, akin to a spaced-out synthesizer! But the Sinkhole’s real intergalactic potential arises from two other circuits: a 4-voice tunable chorus effect and a preamp volume control that wards off signal loss even when the modulation runs wild. The modulation section can sweeten leads and yield ethereal strums, but pushing the wet/dry blend to its limit transforms your guitar tone into something like a vintage analog-digital hybrid synth.