Really cool 500 series rack that is also an audio interface, and lots of routing options via the rear switches. Only selling as I've sold all my 500 series modules and am downsizing. This thing is HEAVY for being so small (almost 10lbs) so apologies for the shipping costs.

Please let me know if you need a USB or power cable and I can include those. I don't have the original ones but I have many extra (like most home studios!).

Reverb won't let me link to it, but google the Sound on Sound review for more info.

Info from L&M website....

The Aphex USB 500 Rack rockets the 500 series concept into the 21st century! By combining a 500 series rack and a USB 2.0 audio interface into one product, Aphex has opened up the 500 series platform to a much wider audience.

The USB 500 Rack bridges the gap between the traditionally analog 500 Series workflows and modern DAW workflows by providing a solution for you to use 500 Series modules directly with your DAW. Use your favorite mic preamps as inputs directly to your DAW or use your favorite analog compressors and EQs as hardware inserts in your DAW, all while monitoring though the pristine monitor section of the USB 500 Rack, which includes Mono and Dim functions along with two high performance, independent headphone amplifiers.

For even more flexibility, modules can be chained in the analog domain for channel strip operation or linked for stereo compression (see your modules linking documentation).

The USB 500 Rack also provides balanced XLR connections for use as a standard analog 500 series rack.

FEATURES

• 6 x 10 Computer Audio Interface @ up to 96k
- Input to computer from 4 modules and stereo S/PDIF
- Output from computer to 4 modules, stereo analog and stereo S/PDIF
• Functions as a standard 500 Series rack
• Modules can be configured in series
• Empty slots can be used as line inputs to the computer (or hardwire bypass of an installed module)
• 2 headphone outputs (HeadPod 4 technology)
• Volume, Mono and Dim for stereo analog output
MIDI I/O
• 220mA of power per slot available when evenly distributed

SPECIFICATIONS

MINIMUM COMPUTER SYSTEM REQUIREMENTS:
• Mac OSX 10.5 and higher
• Windows XP SP3 (32-bit)
• Windows Vista SP2, Windows 7 SP1 (32/64-bit), Windows 8/8.1

Power:
• 90-240 VAC | 50/60Hz | 40W
• Fuse: 250V/2A | 5mm x 20mm
• 880mA total power available to the slots

Examples:
• 4 modules drawing 220mA each
• 2 modules drawing 300mA each, 2 modules drawing 140mA each
• 2 modules drawing 400mA each, 1 module drawing 80mA
• Please consult your module documentation for power requirements. Exceeding available power will result in improper operation.

Dimensions:
10.5 W x 8.5 D x 5.5 H (26.6cm W x 21.5cm D x 14cm H)

Weight:
9 lbs. (4 kg)