CEDIA Expo 2021: Parts Express Specifies DSP-Controlled APA1200DSP 1200-Watt Power Amplifier September 8, 2021 | Home / September 8, 2021 rave-video / CEDIA Expo 2021: Parts Express Specifies DSP-Controlled APA1200DSP 1200-Watt Power Amplifier CEDIA Expo 2021: Parts Express Specifies DSP-Controlled APA1200DSP 1200-Watt Power Amplifier