This is a model that focuses on the amp simulation and IR loader functions of the MultiStomp series, which has become a standard for ZOOM. I purchased it used and have been using it on my board. The rubber feet were missing from the time I bought it, and FS caps were attached *These can be removed with a hex wrench. There are some scratches and signs of use, so please refrain from purchasing if you are concerned about this. The following is a partial quote from the retailer's description. ■ Main features of MS-80IR+ MultiStomp ・Equipped with 23 types of guitar amp/cabinet models in one stompbox ・Studio Ambience function that reproduces 5 types of ambience for the space where the amp & cabinet are placed ・Analog input/output circuit with flat phase characteristics, realizing clear and open sound ・12 effects to adjust the amp sound (noise reduction/EQ, etc.) ・Up to 80 IRs can be loaded ・80 types of amp sounds can be memorized (50 types of presets are built-in) ・USB audio interface function that can be used for recording and live streaming on PC/iPad ・Headphone output for daily practice and sound check backstage ・Stereo input/output suitable for the last stage of the effect board ・"R OUT POSITION" function that allows the output signal of R OUT to be taken out from any point in the patch memory ・High-resolution LCD that changes the backlight color according to the selected effect ・Cursor-type footswitch that allows you to select patch memory and amp models with your feet ・Auto-save function that automatically saves amp settings and a revert function that returns the edited content to its original state ・Tuner function that supports open tuning and drop tuning ・Additional amp models/preset patches can be obtained and patch memory can be edited from the iOS/iPadOS app "Handy Guitar Lab for MS-80IR+" ・Continuous operation for about 3.5 hours with 2 AA alkaline batteries ・Supports program change via USB MIDI, allowing remote operation from external MIDI devices ・USB Type-C port for connection with Handy Guitar Lab and firmware updates