I'm not super-familiar with the jacks on the Extigy, but if it has RCA-outs (same kind as on the back of a receiver) you can use it with any reciever that has AUX jacks on the back. Try the paper for used stuff or maybe check around town for a refurb outlet. I picked up a decent Pioneer 5:1 amp/reciever for $120 at the outlet here in Atlanta.
Fausto