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Radial Engineering Workhorse Powerhouse 500 Series Power-Rack

Original price $1,049.00
Current price $379.99
SKU R700 0104-A

The Workhorse Powerhouse 500 Series Power-Rack from Radial Engineering is a ten card-slot power rack designed to fit 3 standard 19" rack-spaces (3 RU). The Powerhouse accommodates the latest Radial modules with Omniport while also being backwards compatible with old modules. This means that it will work with pretty much all 500 series modules. As there is no audio circuitry other than connectors, the Powerhouse will not impart any color or distortion.

The Powerhouse employs gold plated 15-pin EDAC card-edge connectors on the inside plane and nickel-silver Neutrik connectors on the back panel for signal transfer. Each slot is equipped with an auto-resetting fuse to protect the system should a faulty module be employed. A 1600mA external supply provides plenty of current to feed the modules and 48V for phantom power.

The Powerhouse design begins with heavy 14-gauge steel construction and baked enamel finish for maximum shielding against noise and great durability when subjected to road use. An 'easy glide' slider tray makes it painless to align the PCB connector to the 15-pin card edge receptacle when swapping modules. Once connected, the rear panel sports a standard array of XLRs to connect to and from the workstation or mixer. This is augmented with a series of 1/4" TRS connectors that enable cross-patching and allow for parallel signal processing.

Instead of having to hard patch modules together using a cable, the Powerhouse incorporates a feed switch that instantly connects the signal to the adjacent module. This makes building signal chains quick and eliminates the need for extra cables. Besides, the Powerhouse is equipped with a stereo link function that takes care of the task with a simple slide of a switch.

The Powerhouse boasts a 1600mA power supply that lets you share the power as needed. It can deliver 300mA to your 2-tube preamps and still have over 1000mA left in the pool. It is also equipped with extra safety features to ensure safe use when mixing and matching various brands.

The Powerhouse delivers more flexibility and can be used in various applications.

The Powerhouse houses 10 modules in a compact 19" rack space, making it suitable for use as a side car to house various effects and dynamic processors. Simply wire to your patch-bay and enjoy the convenience, power, and flexibility of the 500 series format.

Live recording is best achieved by using separate preamps for each microphone and instrument. Combine Radial PowerPre mic preamps and Radial JDV-Pre instrument preamps (both sold separately) to record pristine audio tracks and then split the output to the house mixer and PA system.

Combine your favorite sounding preamps, EQs, and compressors to create the ultimate stereo preamp. With 1600mA of current, you have plenty of power to keep your tube preamps running.

10-Space Rack

Fully compatible with old 500 series racks, the Powerhouse gives you 10 spaces for plenty of room to create elaborate signal chains.

Safety Circuits

Built inside all Workhouse racks are special safety circuits for each module to protect the rack and adjacent modules from mishap.

Mil-spec PCB

Double sided military grade circuit board with through hole parts that are soldered on both sides for improved performance. Full ground plane to reduce noise.

Solid Steel

The Powerhouse is made road-ready with 14-gauge steel construction and welded corners for great durability and improved shielding.

Alignment Tray

The Powerhouse makes it easy to slide modules in and out by providing a vertical alignment tray which accommodates most modules and can be removed if need be.

Standard 19" Rack

Suited for recording studios, broadcast stations, and live touring, the Powerhouse fits all standard 19" racks using only 3 spaces (3 RU)

Power LEDs

Front panel LED indicators provide a visual status for both +/- 16V rail voltage and 48V phantom power.

High Current Supply

The Powerhouse is equipped with extra powerful 1600 mA. The shared pool enables you to use the tube module without the fear of brownouts.

Stereo Link

Linking 2 channels is done by sliding the 'Link' switch in the up position.

XLR Connectors

Standard XLR connectors with large channel ID number on each slot make it quick and easy to patch with professional balanced line level gear.


This 1/4" TRS jack changes function depending on what module is connected.

External Power

To keep noise out of the box, the Powerhouse employs an external power supply just like full-size studio mixers. A 5-pin XLR is used to secure the power cable.

Ground Lugs

The Powerhouse is equipped with separate chassis and earth ground lugs for studios with grounding schemes. They can be rear panel mounted for easy access.

1/4" TRS Connectors

1/4" inputs and outputs on each slot are wired in parallel with the XLRs. Used to cross-patch modules using standard TRS cables for parallel processing.

Feed Function

The Powerhouse eliminates the need for inter-module patch cables with the 'Feed' function that sends the output from one module to the next.