An economical way to give surround sound a try is to get the old Dynaco Quadaptor. You hook it up to your power amp's binding posts, and it creates a left minus right (L - R) signal, which is sent to a rear channel amp and speakers. The L - R signal simulates the random phase information contained in recordings made in large spaces (cathedrals, music halls, auditoriums, etc.), primarily in recordings of large ensembles (orchestras, choirs). In addition, some such recordings already contain out-of-phase information.
The Angstrom 200 I mentioned earlier contains L - R circuitry---along with a delay, as well as more sophisticated processing. The 200 also contains a decent DAC and analogue pre-amp. All from the fertile mind of Mike Moffat, and built like a tank (in the "horrible" State of California ;-) .
The Angstrom 200 I mentioned earlier contains L - R circuitry---along with a delay, as well as more sophisticated processing. The 200 also contains a decent DAC and analogue pre-amp. All from the fertile mind of Mike Moffat, and built like a tank (in the "horrible" State of California ;-) .