Crate fxt30 with a Theremini? Anyone use one?

I might be picking up a crate fxt30 to use with my Theremini for $30.00. Was used only a handful of times and looks brand new. It's 30 watts, 10" speaker and had some built in effects. Just wondering if this is even a decent choice to jam with?

I see smaller "NEWER" model amps for $50-$100 as well... For example, a used Line 6 Spider IV 15 is $50.00... 

Ended up picking up a I had a Behringer K450-FX today... Decided to just take the plunge and grab something more suited to what I needed.