Radial Engineering SixPack
500 Series 6-Slot Desktop Power Rack


The Radial Engineering SixPack is a desktop power rack for 500 series modules that lets you mix and match up to six modules and safely power them to create a stereo channel strip or unique signal chain.

The design begins with a heavy 14 gauge steel construction and baked enamel finish.  This provides extra durability when moving the SixPack around the studio while also providing better shielding against stray magnetic fields.  To reduce induced noise, the power supply is external and connects using a 5-pin locking XLR.  To ensure positive contact, the module card-edge connector is mated to a double-sided EDAC 15-pin receptacle that is 100% compatible with the old API pin format.  Extra safety is built-in to ensure malfunctioning modules will not harm the SixPack or other modules that may already be connected.  And with 1600 milliamps of shared current, the SixPack exceeds all others with an average of over 265 milliamps per slot to ensure even the most power hungry tube modules will be satisfied.

Rear panel connectivity includes individual XLR input and output connectors wired in parallel to 1/4" TRS connectors.  These may be used as mults or for cross-patching various modules together to create innovative sounding signal paths.  A set of 25-pin D-Sub connectors enable the SixPack to easily integrate with a Workstation.  Two XLR connectors are front mounted and may be routed to the D-Sub or to inputs 1 and 4 to make patching in a microphone more expedient.  Extra features include a feed switch that patches one module into the next, a link switch to combine stereo-ready modules and Omniport, a 1/4" TRS jack that adds extra functionality.

The convenient design lets you set the SixPack down on your work surface or carry it around the studio using the side-mounted handle.

Radial Engineering SixPack Features:

  • Portable 6-slot power rack with carry handle
  • Great for stereo channels or as a studio side car
  • Powerful 1600 milliamp supply will not sag when loaded
  • Workstation ready with front panel convenience XLRs


  • Using the Six pack to build a stereo channel: Use the SixPack's six slots in a 3 + 3 format to create the ultimate stereo channel strip. Combine a PowerTube preamp with a Q4 class-A EQ and a Komit compressor and you have everything you need to get the job done.
  • Using the SixPack on the road: Fill the SixPack for your next session by recording direct using a JDV instrument preamp Q3 coil EQ and Komit compressor.  Combine this with a microphone using a PowerPre mic preamp, Q4 parametric EQ and a PhazeQ to phase-align both channels.
  • Using the SixPack as a side car: Build the ultimate analog side car to warm up those digital tracks.  Start with two Q4 class-A semi parametric EQs and then phase align the two channels with the PhazeQ.  Add an EXTC to bring in a guitar pedal, Reamp out using the EXTC, frequency divide a track using the Tossover.
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