Beta Aivin BCH-1 Bass Chorus: https://reverb.com/item/18025830-baita-aivin-bch-1-bass-chorus
Cheap!
Hm, looking around, it seems like these Beta Aivin pedals were Cheapies from China from a few years before I started buying 'em up. Nice Boss/Behringer form factor... there's even a few people online who vouch for 'em. Could be bad/interesting, possibly even good!