The TEAC AI-301DA, compatible with DSD, is a high-quality integrated amplifier with USB and optical digital inputs. - Brand: TEAC - Model Name: AI-301DA - Features: DSD support - Connectivity: USB, Optical Digital, RCA, Headphone - Output Terminals: Speaker Output, Headphone Output - Power: AC Power - High-Resolution Audio: Hi-Res Audio Operation has been confirmed. Includes remote control, power cable, optical cable, and speaker cables. Made in 2017, but in good condition as it hasn't been used much. Thank you for looking.