BOSS GT-001 Guitar Amp/Effects Processor and USB Audio Interface Features:

Desktop guitar processor with COSM and MDP amp/effects models from the GT-100 v2 floor processor
High-quality 24-bit/44.1kHz audio recording via USB
Record with your favorite microphone via the XLR input
Process your voice or acoustic guitar too, with specially-designed patches for vocals and acoustics
Start exploring right away with 200 built-in patches, with 200 user slots to store your own creations
Play your software instruments with your guitar, thanks to built-in guitar-to-MIDI conversion
Create and organize your own patches with the BOSS Tone Studio software (free download for Mac/PC)
Connect your own expression pedal or footswitches for even more control over your sound
Four knobs give you fast access to your patchs parameters
External audio input lets you connect your music player, drum machine, etc.
Powered via USB bus power or the included AC adapter