Just picked one up on a local adverts website for a great price and I must say I'm very impressed at how loud this thing gets and how good the sound is out of it. My main gigging amps are an Ashdown Spyder 550 and a 'portable' Ashdown little bastard, I also possessed an Ashdown CTM100 until about 2 weeks ago but moved it on as it was gathering cobwebs. Needless to say my current steed of amps weren't exactly lightweight and I was looking for something handy for playing in small living rooms and tight corners in cafes.
I still think I prefer the sound from the Ashdowns and my Spyder will remain my main amp, but the Elf will definitely come in very handy. My only tiny gripe if the fan noise, again not the loudest I've heard (looking at you 1st gen Orange Terror Bass! ) but its definitely 'there' at low volumes. For a budget Class-D micro amp though it's very very impressive and small things like that are just something you have to get over.