Pro Tools|HD 1 features the HD Core card, supporting up to 32 channels of I/O and guaranteed support for up to 96 simultaneous audio tracks with no stress on the computer. The HD Core card houses a host of powerful DSPs that provide the dedicated mixing and processing horsepower audio professionals have come to expect from Pro Tools. Expanding the system's dedicated processing power and I/O capacity is as easy as adding additional HD Accel cards.

Pro Tools|HD 2 Accel includes the HD Core card and an HD Accel card, offering more than four times the mixing and processing power of HD 1 systems, support for 64 channels of I/O, plus guaranteed support for up to 192 simultaneous audio tracks with no stress on the computer. Expanding the system's dedicated processing power and I/O capacity is as easy as adding additional HD Accel cards.

Pro Tools|HD 3 Accel features the HD Core card and two HD Accel cards, supporting up to 96 channels of I/O and guaranteed support for up to 192 simultaneous audio tracks with no stress on the computer. Of the three core systems, this configuration offers the most power and flexibility, enabling you to complete projects more quickly and efficiently than ever before. Expanding the system's dedicated processing power and I/O capacity is as easy as adding additional HD Accel cards.

Pro Tools|HD Accel delivers unprecedented sonic fidelity and performance. Featuring dramatic DSP power, sweeping sample rate support, high-resolution audio interfaces and peripheral options, abundant track count and I/O capacity, extensive routing flexibility, and much more, Pro Tools|HD Accel gives you control over your audio world like never before.

Pro Tools' editing capabilities set the standard for what we expect from a DAW. Using a single screen - the Edit Window - you are able to adjust literally every aspect of both audio and MIDI tracks. Pro Tools' non-linear, nondestructive approach to editing enables you to act instantly on your decisions without having to commit to them, and the versatile Super Tool turns your cursor into a tour de force of editing power and speed. Pro Tools 8 also supports Elastic Time - so you can easily change the tempo and timing of your audio files - and Elastic Pitch - which lets you easily transpose an entire audio region. All in all, you're empowered to make necessary edits with surgical precision - all while preserving flawless audio quality.

The Mix Window offers an extremely intuitive means of adjusting the parameters of your mix with all the functionality of a traditional console. Plus, Pro Tools 8 gives you the ability to change channel colors, tracks, and regions as well as customize the toolbar the way you want, so you can quickly identify tracks and ultimately speed up your workflow. You can also lock regions to the timeline to prevent them from being inadvertently moved or editing. And, you can use new Automation and Controller lanes to view and edit automation for volume, pan, and plug-ins, as well as all your MIDI CC data - without changing track views. For those who prefer a hands-on approach, a Digidesign-compatible control surface merges the software and hardware world and places the power beneath your fingertips. However you choose to operate, Pro Tools presents you with a variety of methods to control and automate your mix - all within a non-destructive, recovery-friendly environment that's geared toward rapid, superior results!

Pro Tools 8 includes dozens of plug-ins ranging from dynamics to effects to instruments. To name just a few, there are a Mini Grand piano, a drum machine, 20 A.I.R. effects, multiple synths, guitar and amp modeling tools, and a host of processing plug-ins - plus more than 9GB of high-quality loops. To use plug-ins, you simply activate them within Pro Tools. You are also free to employ presets, customize settings, and/or automate any plug-in's activity. Plug-ins that have been designed for Pro Tools lend a world of flavors to your sonic landscape!

Any session you create can seamlessly be moved between both Windows- and Macintosh-based Pro Tools LE, M-Powered, or HD systems while retaining all automation, track configurations, MIDI data, and even plug-in assignments. Pass your session to a collaborator or take it to a professional studio without compromising your session's integrity. Pass your session to a collaborator or take it to another professional studio without compromising your session's integrity.

The full MIDI sequencing capabilities of the industry-standard audio production software allow you to record, edit, and mix up to 256 MIDI tracks alongside your audio. MIDI events and sequences are manipulated as easily as audio in Pro Tools 8. What's more, Pro Tools 8's new Score Editor lets you view, edit, arrange, and print MIDI data as music notation - all within the Pro Tools environment. You can write parts on a single staff or grand staff, easily place and edit notes, edit the meter and key signature at will, and you can also add chord symbols and chord diagrams to sessions. Transcribe MIDI parts in real time. Print out a score in its entirety or print only certain instrumental parts. You can even export sessions as Sibelius (.sib) files for further finessing in Sibelius.