PreSonus Alpine EQ-550. The 1960s-vintage EQ provides consistent, repeatable equalization with three overlapping bands, divided into seven fixed frequency points, each offering five steps of boost or cut. The high and low bands feature selectable peaking or shelving filters, while an independently insertable bandpass filter allows for easy acoustic fine-tuning and superior equalization. 1960s 3-band EQCompatible with Studio One Artist and Professional (Versions 3.5.6 and higher)Functions as an additional EQ model in the Fat Channel XT Plugin in Studio OneAlso compatible with StudioLive Series III Console and Rack MixersFunctions as an additional EQ model in the Fat Channel processing section of StudioLive Series III Mixers Compatible Mixer Models:StudioLive 16 Series IIIStudioLive 24 Series IIIStudioLive 32 Series IIIStudioLive 16RStudioLive 24RStudioLive 32R File Size - ≈ 47MB System Requirements: Studio One 3 Artist or Professional (Versions 3.5.6 or higher)-OR-A StudioLive Series III Console or Rack Mixer Computer Requirements: Mac OS X 10.8.5 or higherIntel® Core™ 2 Duo processor (Intel Core i3 or better recommended) Windows 7 x64/x86 SP1 + platform update, Windows 8.1 x64/x86, Windows 10 x64/x86Intel Core 2 Duo or AMD® Athlon™ X2 processor (Intel Core i3 or AMD Athlon X4 or better recommended) Mixer Minimum Firmware Requirement: Version: 1.7.0 or higher