MacMice will begin shipping its new GuitarPlug and MicPlug USB audio interfaces on February 10.

The products are particularly aimed at Apple's growing community of GarageBand users. Both devices are cylinder shaped, 2.3-inch by 0.7inch sized, USB bus powered (with an on/off switch). Both devices convert mono analogue audio into 16-bit, 48KHz better than CD-quality digital USB audio, the company claims. A blue light shows when the devices are switched on.

GuitarPlug has a quarter-inch guitar plug for use with any electric guitar or bass, while the MicPlug has an XLR plug for use with any dynamic handheld microphone. Both cost $49.99 (UK price isn't yet announced).

"We believe that users of GarageBand or Logic software demanded an entirely new approach for connecting instruments and microphones to the computer, something much smaller and simpler than anything else that's available," said DV Forge music products manager C.J. Sorg.

"Our patent-pending solution is a small, but high quality digital interface. The GuitarPlug and the MicPlug are our first two products, and they connect an electric guitar or dynamic microphone, respectively, to any modern computer using a simple USB cable."