I paid $2,200 for this from the used market earlier this year. (The MSRP was $3,419.) I traded it, but received a broken item, so we reversed the trade and it is available again.

I'm looking to sell, but may be open to trading for high-end headphones or a standalone DAC (with I2S HDMI input)...only if it involves cash on top from your end.

The Matrix element X is a great all-in-one that can be used as a DAC, headphone amp, preamp, music server and streamer. It's one of the best DACs under $4,000 and is loaded with features.

It is in perfect working order and good condition, with a few minor marks on the chassis.

The original packaging, remote control, wireless antennas, power cable and USB cable are included.

Price includes the PayPal fee and insured FedEx Home Delivery shipping to the US. International will cost extra.

Check out these links to learn a lot more.
https://soundnews.net/sources/dacs/matrix-audio-element-x-review-ultimate-all-in-one-audiophile-hub/
https://www.matrix-digi.com/product/7/element_X