THX Onyx Portable DAC/Headphone Amplifier Offering the THX Onyx, a device that makes high-quality audio experiences easy to achieve! This popular portable DAC/amp delivers authentic, high-resolution sound in a compact size. THX, and one other item. ・Features & Recommended Points Equipped with THX AAA-78 Technology Minimizes sound distortion and noise to the extreme, achieving clear and detailed sound. It is said to deliver up to 5 times the output of a typical portable DAC. THX ESS ES9281PRO DAC & MQA Support With a flagship-class DAC chip, it supports high-resolution audio sources and master-quality streaming. It faithfully reproduces the original details of the music. THX ✓ Plug & Play Compatible Can be used without drivers on a wide range of devices such as Windows, Mac, and Android. Can also be used with iPhones with a separate adapter (sold separately). What Hi-Fi? ✓ Compact and Easy to Carry The stick-shaped, lightweight design allows for high-quality listening anytime, anywhere, when combined with a smartphone or PC. About the Sound The THX Onyx dramatically improves the sound quality of headphones. With less noise and a richer dynamic range, you can experience a "sense of the sound coming forward" that you can't get from plugging directly into a smartphone. What Hi-Fi? Product Condition Used (Although there is some wear and tear, it works well) Everything in the photos is included. ・Please check the photos in the product description for the original box and accessories. Reason for Listing Although it is a device with excellent sound quality, I have hardly used it recently, so I would like to sell it to someone who will use it next. Please feel free to comment if you have any questions. This is a recommended item for those who want to easily enjoy high-quality sound!