Line 6 Spider IV HD150 150W and 4x12 Guitar Half Stack 16 amp models, including 4 new mid-gain models based on legendary amps New Smart Harmony and Pitch Glide FX with 28 preprogrammed settings 18 FX models via 3 Smart FX knobs, with customizable primary & secondary FX 2 Reverb models with a dedicated Mix control on the Spider IV front panel A new Edit Mode enables deep editing of all Smart FX and "Reverb parameters