About: The DEQX HDP-4 is a versatile digital audio processor designed to enhance your audio system’s performance. Here are some key features: Inputs and Outputs: It includes 5 digital inputs (TOSLINK, S/PDIF, AES/EBU, USB) and 2 analog inputs. It also has balanced and unbalanced analog outputs1.Audio Processing: The HDP-4 offers advanced speaker correction, subwoofer integration, and room correction capabilities. It supports high-resolution audio processing with 24-bit depth and sample rates up to 192 kHz1.Crossover and EQ: It features flexible crossover settings with slopes from 6 to 300 dB/octave and multiple EQ bands for precise audio tuning1.Latency and DSP: The processing latency is typically around 15 ms, and it uses high-resolution DSP for accurate audio reproduction1.The HDP-4 can be used as a preamp processor or placed between your preamp and amplifier, making it a powerful tool for optimizing your audio setup.Please note: I am selling this item as is, and will be happy to answer your questions. Measures: 17 x 10.5 x 5. Condition: This item powers on as you can see in the photos. The processor itself is in nice shape. Comes with the remote, 3 eye input cable, operating manual and CD. No power cord, but it is generic. Everything from this estate has been working great. Please see my feedback on the other high-end audio equipment recently sold from this estate. I am selling the record collection and audio equipment from the private residence of a lifelong record enthusiast. Now in his later years, he has decided at last to sell his collection. He took care and joy in maintaining his record collection and always used hi-quality equipment. You get the exact item and contents in the photos. I personally handled it as little as possible. Please check my feedback for reliability. Will ship safely (as always). *This item does include shipping insurance.