This was removed from a project where I updated the audio equipment but this was fully working then. No power cable included. The Bose Panaray System Digital Controller Sound Processor in black is a high-quality rack-mountable equalizer designed for professional audio applications. With a frequency range of 20 Hz to 20 kHz and a maximum sampling rate of 48 kHz, this digital processor offers two input and four output channels, making it ideal for musical instruments and DJ equipment. The sleek black design, along with the brand’s reputation for excellence in sound technology, ensures that this sound processor is a reliable choice for enhancing and controlling audio signals in a variety of settings.