The Pedal Zone just posted this video of the EarthQuaker Devices Ghost Echo V3 reverb, check it out!
V3 UPDATES – JUNE 2017:
Upgraded op-amps for better performance and lower noise
Stronger reverb signal with 2x the output
Recalibrated Dwell control capable of self-oscillations when all the way up
Silent relay-based switching
The Ghost Echo is a spooky take on the haunted* amp-top spring reverberation units of yesteryear. This creepy analog/digital spring reverb emulation machine boasts a terrifying 30ms – 150ms of pre-delay, controllable via the Attack knob, for everything from a quick rockabilly slapback to viscous pools of ectoplasmic reverberations. When playing staccato, you’ll hear the tortured trails of the reverb, resulting in more of a slapback or echo sound. Legato playing will reveal a massive ambient “depth” that fattens up the sound – and look out, it’s right behind you!
Attack: Adjusts the length of the pre-delay, from 30ms at minimum to about 150ms at maximum. When the Dwell is set to self-oscillate, this will change the pitch of the oscillations.
Dwell: Adjusts the length of the decay. This will start to self-oscillate around 3 O’Clock, the pitch of the oscillations can be changed by turning the Attack control.
Depth: Mixes in the wet signal with the dry, unity is around noon and everything after is boosted.
More info here.