Everything in the photos, plus the three power cables. I used these a few years ago with a friend for voice-altering fun, but I realized it was an expensive hobby and left them unused. I've confirmed they power on and produce sound, but I've only done a cursory check, so please understand that. ULTRAGRAPH PRO (FBQ3102HD) This is equipment for fine-tuning high and low frequencies. I bought it new, but it's from a manufacturer that's not very careful with electronic components, so the LED on the knobs sometimes flickers. (There's no problem with the response.) COMPOSER PRO-XL (MDX2600) This is equipment that suppresses low frequencies. When used with voice, the low frequencies disappear, but it feels like you have a stuffy nose. I bought it used, so it has markings from a studio or somewhere. (It looked like they could be removed with thinner, but I was afraid I'd erase parts I didn't want to, so I left them as is.) ULTRAGAIN PRO (MIC2200) This is equipment that increases the volume of the microphone. It's simply a microphone volume controller. I remember buying it new, but the condition is the same as the other two. I've disposed of the manuals and boxes, so please assume that everything in the photos is all that's included. I can't explain the details, and it's a hassle to reconnect and check them, so please make your own judgment. These items are not eligible for exchange or return. <Price reductions will be made at my discretion, so I will not respond to negotiations.> <I will not sell items separately.> Thank you for your consideration.