With a touch of a button iD4 s volume encoder becomes a virtual scroll wheel, enabling you to adjust DAW hosts, plug-in parameters and even scroll through your iTunes library - just like you re adjusting a piece of hardware. Wherever your mouse pointer hovers, the iD knob can scroll to control. And when your not using ScrollControl, pressing iD4 s volume encoder activates DIM, enabling you to quickly reduce the playback volume. iD4 has a harmonically rich JFET D.I input. Designed to replicate the input stage of a classic valve amplifier, you can plug your guitar, bass, keyboard or drum machine straight in and start recording instantly. Get professional quality recordings from the start and take your track to the next level. Recording an acoustic guitar and vocal? iD4 s monitor pan feature enables you to pan both the mic pre input and D.I input from left to right, making it easy for you to create a balanced headphone mix that suits you. Quickly plug in, set up a headphone mix and starting tracking instantly, perfect for singer songwriters producers on the go. Featuring a dual headphone output, iD4 enables you to collaborate with your friends and other artists. Whether you re recording a guitar and a vocal or just listening to music together, iD4 lets you plug in two sets of headphones, making it the perfect tool for jamming with your friend.