Bose ControlSpace ESP-880A Black32 bit fixed floating point DSP + ARM, 456 MHz, 24 bit, 48 kHz, 20 Hz 20 kHz, 115 dB, 3. 81 mm Phoenix Contact, 6 pin, 66 , RS 232, RJ 45 An open architecture DSP, the Bose Professional Control Space ESP 880A engineered sound processor is designed for a wide variety of applications from small, self contained projects to large, networked systems. It features 8x8 analog audio I O, a Bose AmpLink output, and advanced digital signal processing with 48kHz