The iFi Zen DAC Signature, which achieves high sound quality, is a set of a DAC and Zen CAN Signature with USB connection, headphone output, and RCA output. When listening with headphones that support balanced connections, the detail of the sound was refined, and I was able to listen with a more immersive feeling. I don't have time to listen to music leisurely due to work and childcare, and it's just gathering dust, so I'm letting it go in the hopes that someone who can use it will take it. There is some stickiness on the power plug due to aging, but there is no problem with use. As a bonus, I will include a USB cable for digital input. (I think I bought it for about 5,000 yen.) There is no box from when I purchased it. - Brand: iFi - Model Name: Zen DAC Signature set 6XX - Input Terminals: USB, Coaxial, Optical - Output Terminals: Headphone output, RCA output - Included Accessories: Genuine 4.4mm to 4.4mm cable