The Schaffer Replica® EX Tower

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The Schaffer Replica® EX Tower is an exact reproduction the interactive compressor, expander, optical limiter, boost and "goalpost" EQ within the Schaffer-Vega Diversity System (1975-1984) used by Angus Young, David Gilmour, Eddie Van Halen and an long list of guitar and bass legends. This interactive circuit is responsible for the percussive attack, copious harmonics and singing sustain heard on Back in Black, The Wall (soundtrack), Kiss Alive and a plethora of live albums from the golden age of guitar.

Over 30 Major Artists & Producers Use The EX Tower!

Notable Guitarists Keith Urban, Chris Stein, Doug Aldrich, Richard Fortus, Joe Bonamassa, Pepper Keenan, David Hislop, Steve Stevens, Billie Joe Armstrong and Angus Young

Notable Producers Dave Cobb, Butch Walker, Mutt Lange, Mike Frasier, Dann Huff, Brandon Hood,  Dr. Luke, Andy Freeman and Gene The Machine

Front Panel

• INPUT knob controls our signature gain circuit that adds rich harmonics and bumps thick low-mid frequencies. This knob simultaneously controls a COMPANDER, a soft knee compressor fed into an expander to restore amplitude and remove unwanted squish.

• OUTPUT knob controls a 30db of boost designed to add vintage coloration.

• POWER switch turns off power to the unit.

• RED LEDs light up when power is ON

• GREEN LED lights up when the effect is engaged (off when defeated via footswitch)

• AUDIO IN 1/4" jack for instrument input.

• AUDIO LEVEL VU meter displays signal and limiter strength

Rear Panel

• FOOTSWITCH 1/4" jack for bypass footswitch (effect ON when unplugged)

• AUDIO OUT 1/4" jack to amplifier

• BALANCED OUT XLR output 

• MODE switch engages/disengages BOOST opamp
• BYPASS switch to engage/disengage OPTICAL LIMITER
• OPTICAL LIMITER knob controls limiter strength
• 2.1mm POWER JACK

For EU customers, please purchase through the EU webshop to avoid import costs.

Winner of Guitar Player Magazine Editor's Pick Award!