I could really use some advice on choosing equipment. I have a custom built PC and I want to be able to switch back and forth between music production (recording), DJ (both live and recording) and listening to music with as much quality as possible. In other words switchable between flat and non-flat. Where I am especially lost is the USB Audio Interface and DAC. I really wish there was a piece of equipment that will do both and does not cost a fortune! Here is some of the equipment I am considering and please feel free to make any suggestions but I need affordable but still very good stuff to get started! I have been a DJ on and off for many years but this will be my first attempt at computer DJ-ing and very little experience with music production. MSI Z97 Gaming 9 ACK (motherboard with built-in Wolfson DAC) - leary of USB and UEFI issues PreSonus Eris E8 Active Studio Monitors Ultimate Support MS-80B Studio Monitor Stands Pioneer Pro DDJ-SR Shure SM58S Vocal Microphone - live Rode NT1A Vocal Condenser Microphone - studio Akai MPC STUDIO Music Production Controller Akai Professional MPK225 MIDI Controller Sennheiser HD8 DJ Headphones Audio Technica ATH-M50 Here is where I am confused with what to do: PreSonus Monitor Station V2 PreSonus | Monitor Station V2 Alto Professional ZMX122FX 8-Channel Mixer Alto Professional - ZMX Series > ZMX122FX TEAC UD-H01-B DAC UD-H01 | TEAC Roland Quad-Capture Audio Interface QUAD-CAPTURE: USB 2.0 Audio Interface | Roland U.S. Any good advice will be sincerely appreciated! I know I should not need all 4 (directly above with links) but I just want as many options and mic pre-amps as possible. I know Pioneer has some studio monitors that are switchable but my plans were to eventually upgrade to Yamaha HS8's and then Adam or Focal later on. Possibly a Yamaha MIDI/keyboard later also.