I have the previous generation of
these, and they're great. When I got them, they were $100 and also had a $50 rebate so well worth the $50 total price! The newer version (actually old since they came out in 2004) are too expensive at $164, but you may be able to find some elsewhere cheaper. This is probably what your dad has. A couple of gripes though: 1) the volume control scratches at very low volumes after about 1 year (could just replace the pot), 2) the bass, being in a ported enclosure (-24db/oct slope below the port frequency), doesn't dip low enough for movies IMO, but fine for most music, and 3) mids are a little lacking.