Blackstar's patented ISF (Infinite Shape) system allows you to go from an 'American' sounding amplifier to a classic British amplifierCabRig: IR-based DSP software lets you choose from hundreds of microphone and cabinet combinations and store up to 3 CabRig presetsProfessional USB Recording Output: Now USB-C it's the easiest way to get tube tone in your recordingsThe innovative Clean Channel offers maximum quality and flexibility of clean sounds. It is equipped with a voice selector: American Clean British CleanThe rich and sensitive Overdrive channel features a voice selector: Classic Overdrive Modern Overdrive with high gain voicesAll models feature 4 selectable sounds with optional FS-22 and FS-16 two-way pedals. The result is a wide selection of tube soundsLine input for jamming or listening to musicLine output for practicing or recording silentlyHT stands for High Tension the internal high voltage circuit necessary to drive the valves to their maximum performanceInnovative 1W tube headECC83 preamplifier ECC82 push-pull power amplifierTwo footswitchable channels: boutique clean high gain overdriveFour footswitchable voices: American Clean British Clean Classic Overdrive Modern OverdrivePatented Infinite Shape Function (ISF)Studio-quality adjustable reverb in ArchitectUSB-C for recording and connecting to infrared Architect and CabRig technologyStereo line inputStereo mini-jack output for headphones and silent practiceCompatible with the FS-22/FS-16 2-way stomp boxDimensions: 273 x 187 x 174mmWeight: 3.7kg