Lovetone Ring Stinger

Part of Kurt Vile's live gear at the Bottletree in Birmingham, Alabama on 7/15/13 according to http://otherbandsstuff.com/post/55807999945/kurt-vile-the-violators-71513

"Kevin Shields turned me on this company... these are on eBay right now, for like over a thousand a piece..." says Billy about the Lovetone Ring Stinger at 2:41.

In this detailed breakdown of Chancellor's pedalboard, the Lovetone Ring Stinger is mentioned.

The Ring Stinger is a ring modulator/fuzz octave doubler/repeater/dirt box/optical synth all rolled into one. It is the only available ring mod using the classic transformer matrix modulator (and not the ubiquitous modulator chip) which gives it the distinctive vintage ring mod sound and germanium distortion. The Ring Stinger is a very rare and unique pedal which gives Ambarchi his edge in his music both live and in the studio.

Shown alongside El Capistan on Strymons site