I have a Snark SN-2 and I've even tuned the banjo with it. Absolutely LOVE it. Was in my stocking at Christmas (alongside some other cool stuff). If it comes apart, I use a bit of force and pop it back in, and the funny thing is, you don't need to have it clipped on for it to pick up sound, and mine I think has the double-ball joint, and when I'm at the folk festival later this year it's going with me.