Purchased from Amazon on October 2, 2025. Used for sound testing for approximately 10 hours. - Model Name: AT-HA2 - Brand: audio-technica - Input Terminals: LINE IN / OUT - Output Terminals: HEADPHONE - Power: DC IN 15V - Volume Adjustment: Volume knob - Color: Silver Accessories include a non-genuine 3.5mm cable, but everything else is original and complete. ✱Important Notes White noise occurs when the volume is set to 50% or higher; this is a specification, not a defect. You will need to ensure sufficient volume with another device. This may be difficult for those unfamiliar with audio equipment or who want to use it as a standalone unit. Please feel free to ask any questions. Thank you for looking.