Standard marks from being taken in and out of racks but on surface only. Manufactured 9/02 and runs like a watch! Has no issues and no tales of woah. My policy is simple…. if any of my racks fail to pass all my tests, I junk them and will not sell them.
Specs:

• Dual-Engine Architecture: Features two entirely independent channels, allowing you to run processing on independent left/right paths or couple them together. [1]
• Filter Capacity: Provides up to 12 fully programmable filters per channel(24 total), powered by a 24-bit high-speed digital signal processor (DSP) with 24-bit A/D and D/A converters. [1, 2]
• Operational Modes: Each individual filter can be assigned to its own mode:
• • Single-Shot (SI): Automatically detects a feedback frequency, deploys an incredibly narrow notch filter to kill it, and locks that filter down tightly until you manually clear it.
  • Auto (AU): Continuously scans the live audio mix and dynamically shifts or resets filters as new trouble frequencies emerge.
  • Manual / Parametric EQ (PA): Completely disables the automatic feedback scanning for that filter, turning it into a strict parametric equalizer band where you can precisely define the target frequency, bandwidth (Q), and gain. [1, 2, 3, 4]
• Connectivity & I/O: Equipped with balanced XLR and 1/4" TRS inputs and outputs on the rear panel. It also features full MIDI In, Out, and Thru connectivity, allowing you to use MIDI control boards or foot pedals to switch user presets on the fly.