Brick Wall

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Two-Outlet Audio Surge Protector

The 2RAUD represents the latest evolution of the Brick Wall Surge Filter for audio applications.

This unit is specifically designed to handle high current devices such as large amplifiers and subwoofers as well as other "power hungry" devices one might have in their home theater and/or audio systems. With a massive reactor that will not be stressed or constrict, this unit is overkill for most high current applications.


  • Made in the USA
  • 6' grounded 3-wire #14 SJT line cord, right angle plug.
  • Two grounded outlets.
  • Magnetic shielding steel cabinet: Black.
  • Self-test circuit with visual indicator.
  • Mounting brackets available (click drop-down)


Outlets Available 2 (unswitched)
Load Ratings 15A at 120 volts, single phase, 50-60 Hz; full load regulation 1%.
Endurance Test 1,000 surges of 6,000 volts, 3,000 amperes, SRV <400 volts, no failures, L-N (ground wire protection) mode, U.S. Gov't. Mode 1.
Limiters Series surge reactor current limiter; cascaded, auto-tracking dual polarity voltage limiters; dual pulse inverters. Parameters optimized for switch-mode power supply protection.
Clamping Voltage Onset 172 volts nominal; 2 volts above peak line voltage (auto-tracking).
EMI/RFI Filter Response (bi-directional, wave tracking): With 50 ohm Rg load: 3db at 5kHz; 26dB at 100kHz; 38dB at 300kHz.
Let-Through Slew Rate 5,000 volt/µs disturbance reduced to 28v/µs within AC power wave envelope, and less than 10v/µs outside the power wave envelope.
Maximum Applied Surge Pulse Joule Rating Unlimited rating (due to surge current limiting) (8x20µs).
Maximum Applied Surge Pulse Voltage 6,000 volts (1.2 x 50µs) (Industry Standard rating).
Maximum Applied Surge Pulse Current >100,000 amperes (unlimited due to current limiting) (8 x 20µs).
Endurance, C62.41-1991 (formerly IEEE 587) Category B3 (C1) pulses 2kv>100,000; 4kv>10,000; 6kv>1,000 (NRTL verified).
Dimensions 3" H x 8.5" W x 4" D
Weight 7 lbs.