Very good condition and in perfect working order. The pedal shows some wear, particularly on the bottom, but is completely functional and clean elsewhere. This pedal is no longer in production.
From Wampler: The Nirvana Chorus was designed by Brian not to emulate the chorus sound heard on a particularly famous grunge band, but rather to bring you tonal nirvana. It's built with flexibility in mind, giving you a huge range of chorus and vibrato sounds. There have been a great deal of high-quality chorus units over the years, it's a classic effect in the guitarist repertoire without which no board is truly complete. However, all those classic chorus pedals and rack units have something in common: one characteristic sound. You'll hear guitarists talk about how they love how dark and "wet" a particular chorus sounds, or jazz guitarists might really dig the dry, subtle chorus of a different unit.
They also have the unfortunate characteristic of often causing a volume drop or volume boost when engaged. Brian approached designing the Nirvana Chorus as a way to get the best sounds, capable of tons of tones, adjustable in all the important ways, from shallow and light and fast and bright, to dark and murky, slow, and deep as the ocean.As a crowning element, it won't raise or lower your volume, because you can adjust its level! It really is an ideal chorus, tunable for any use that you can think of.
Oh, and it also does all that for Vibrato. Cool, huh? Dig in!
