The amplifier rack houses the DTS 6ľAD processor and Altec power amplifiers. The speakers are bi-amplified with electronic crossovers in the DTS. A Dolby CP-200 is being installed for magnetic and SR materials. Monitoring is accomplished both in the DTS and the wall-mounted monitor from the Ballantine 6-4-1 system. The original Western Electric system was removed when Butterfield left the theatre in 1970s.