The iMP AMP from ZVex is a power amp intended for studio use or with small sound sources such as iPods, CD players and laptops to power passive monitors. The iMP AMP is a remarkable product that fuses '50s technology with modern electronics so you can put a '50s-style hi-fi right on your desktop, no matter how little room you have available. Perfect for your office or recording environment, you can put the iMP AMP right on your desk with bookzshelf speakers and have a mini tube hi-fi setup for your iPod! Comes with AC power adaptor.