At the core of the Helix LT is Line 6's dual DSP HX modeling engine. The HX engine reproduces every minute detail that goes into a great amplifier. Every single detail has been taken into account, down to an amplifier's power supply ripple and tube sag, ensuring you receive an ultra-realistic playing feel and experience. The classic bloom and compression of some amps and the powerful punch of others are all faithfully accounted for. You can also load custom impulse responses to personalize your tone. Fast and easy programming Even with a massive amount of routing, recording, and editing power under the hood, Helix LT's touch-sensitive footswitches let you actually edit your whole sound with your feet, without even having to stop playing. And the large 6.2" LCD display rids the system of menu surfing, while giving as much control as the deepest editing software. It's so intuitive to navigate that Line 6 claims you'll have 90% of Helix LT mastered within a 5-minute glance at the full-color Helix LT quick-start guide. Design your rig at the speed of thought. Line 6 Helix LT Multi-effects Guitar Processor Features: Dual DSP-powered HX modeling engine Over 300 amp, cab, mic, and effects models World-class polyphonic pitch-shifting effects 6.2" LCD display 12 touch-sensitive footswitches for editing 2 mono/1 stereo FX Loop 8-in/8-out USB audio interface Expression pedal outs AES/EBU, and L6 Link digital outputs Capacitive touch-sensitive switches for parameter recall Preset or stompbox modes Integrated looper Tour-grade footswitches Supports third-party impulse responses (IRs) True preset spillover Pedal Type: Multi-FX Guitar workstation Analog/Digital: Digital Number of Effects: Over 200 effects (latest firmware), 9 x effects types simultaneously Effects Types: Distortion, Dynamics, EQ, Modulation, Delay, Reverb, Pitch/Synth, Filter, Wah, Volume/Pan Amp Modeling: Over 100 Amp, Cab and Mic Models (latest firmware) Looper: 60 seconds (mono full speed), 30 seconds (stereo full speed) Inputs: 1 x 1/4" (guitar), 2 x 1/4" (returns) Outputs: 2 x XLR (main out), 2 x 1/4" (main out), 2 x 1/4" (sends) Digital Outputs: 1 x XLR (AES/EBU, L6 link) MIDI I/O: In, Out/Thru USB: 1 x Type B Headphones: 1 x 1/4" Other I/O: 1 x RJ45 (Variax) Expression Control: Built-in, 1 x 1/4" (expression pedal 2 / external amp switching) Compatibility: OS X 10.10 or later, Windows 7 SP1 or later Power Source: Standard IEC AC cable Height: 3.7" Width: 20.9" Depth: 12.45"