This is a Denon UD-M5 mini "executive" stereo receiver system. All-in-one unit that has a 3-CD player/changer, AM and FM radio, and auxiliary input. Built-in amplifier to power your speakers or headphones (not included.)
This has problems. The volume know doesn't work reliably, but you can use the remote control to adjust volume and that works fine.
The CD player doesn't seem to be reliable, it skips sometimes. However, the radio works fine, and there is an aux input you can connect to any audio source such as your iPhone/smartphone, computer, TV, Bluetooth receiver, or an external CD player. I recommend this unit only if you're looking for a small stereo receiver, NOT if you expect the internal CD function to work.
This is sold AS-IS with no warranty or guarantee. Priced very low accordingly.
Cash only, $20, must pick up in Reston. Must include your phone number and when you can meet, evenings preferred. Thank you.