Bose CSP-428, Professional Sound Processor, DSP for fast installations, Intuitive browser-based user interface offers easy and fast operation, Processor: 32 bit, 456 MHz, Converter: 24 bit, Sample rate: 48 kHz, Frequency response: 20 - 20,000 Hz, 4 Analogue inputs: 2 unbalanced RCA, 2 balanced Euroblock, Impedance: 12 kOhm, Phantom power: +48 V, 10 Outputs: 2 analogue Euroblock, 8 digital via AmpLink RJ45, Impedance: 66 Ohm, GPIOs, Format: 19"" / 1U, Installation depth: 199 mm, Weight 3.6 kg