They seem very similar to my compacts, but with battery power. Great combo. I've never heard them, but I can understand why they'd be popular.
Small gig, ceremonies, cocktail hour, fill, patio. I use the s1's more now than the compacts, but I'd be all over these if I didn't already have the portibility thing taken care of.
2 of these would be PERFECT for an older Dj who does smaller gigs with house music for older people and has trouble with heavy gear. But I don't know anyone like that.
