Includes USB cable, power supply, quick-start guide and MPC Beats software (download), AIR Mini Grand, DB-33 and Eleven Lite.Dimensions (W x D x H): 275 x 285 x 80 mm.The MultiMix 8 USB FX transmits the master stereo signal to the computer and also feeds back a stereo signal.Plug-and-play USB connection for Mac and PC, no driver installation required.Main and headphone outputs with independent volume control.Multi-colour LED output meter for level monitoring.Integrated DSP effects processor with foot switch bypass and aux path for external effects processors.3-Band EQ for 3 and 4, 2-band EQ for channels 5 - 8.3-Band EQ with semi-parametric mids for channels 1 and 2.Hi-Z input for direct connection of electric guitars and passive electric basses.XLR Inputs with gain control, switchable low-cut filters and 48V Phantom power.16-Bit, 44.1/48 kHz stereo USB output allows recording and playback to computer.With microphone, line and instrument inputs.You could instead select the other "USB Audio Codec" for Playback Engine, but then you would only get input - no output (fine if you just need to capture something without monitoring then switch back to the other to play back). (Still might need to Default your I/O in the Input and Output tabs.) So try launching Pro Tools with N and select Pro Tools Aggregate I/O for your Playback Engine. Pro Tools Aggregate I/O gets around this limitation by allowing you to combine the Input and Output of your CoreAudio device to treat it as one. If you are selecting "USB Audio Codec" then that is either just the Input or just Output of your Alesis (sounds like the latter based on your problem). Pro Tools can only have 1 "device" as its Playback Engine. I have attached another screen shot to show what I see.
I do have USB CODEC selected as the Playback engine. I initially DID have to start with the N key down because I was getting the prompt that the I/O was not recognized (or something like that).
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