The Positive Grid BIAS Head is a formidable 600-watt guitar amplifier that can tap into the sonic power of BIAS Amp Pro software, allowing you to create your own custom amplifiers. And using BIAS's Amp Match technology, you can capture the character of your own amplifiers, load them into the BIAS Head, and even add them to the thousands of custom amp models available on the BIAS ToneCloud. Use the built-in power amp to drive any speaker cabinet you like, or use the line output for direct convenience. A built-in effects loop (switchable between series orPositive Grid BIAS Head Features: Guitar and bass amplifier offering full integration with BIAS Amp Pro software and BIAS Amp app Stores 25 presets at a time for instant recall 600-watt power amplifier is ready to drive any 4-, 8-, or 16-ohm speaker cabinet Create your own custom amplifier designs using the included software High-quality components for outstanding audio quality and zero-latency performance Amp Match technology allows you to re-create the character of recorded guitar tones Explore thousands of custom Amp Match presets via ToneCloud Ideal for performance, recording, and practice Integrates with BIAS Amp Pro software via USB, and with the BIAS Amp iOS app via Bluetooth Effects loop with switchable series/parallel operation for integrating your effects pedals Direct outputs for connecting to sound systems or recording devices MIDI in/out/thru for connecting with MIDI equipment parallel operation) allows you to integrate your effects pedals. Whether you're practicing, recording, or performing, the Positive Grid BIAS Head is an outstanding solution for wide-ranging tone.$750