The Schaffer Replica by SoloDallas

Solodallas · effects unit

The SoloDallas Schaffer Replica recreates the Schaffer-Vega Diversity System, a wireless guitar transmitter Ken Schaffer designed and Vega released in 1976 that Angus Young used both live and in the studio, including on Back in Black, not just for wireless freedom but for the distinctive overdrive boost its circuit added ahead of the amp. Builder Fil Olivieri, an AC/DC fan going by SoloDallas, spent thirty years buying up every piece of gear he knew Young had used trying to chase his tone before finally reading a 1984 interview where Young mentioned the SVDS and its two controls for further overdriving an amplifier, the missing piece that led directly to this product. When Olivieri launched the Schaffer Replica at NAMM in 2014, unit number 0001 went to Angus Young himself, who now runs two Schaffer Replica Tower units in his own rack.

• boost
• wireless
• overdrive
• gain
• studio
• tube
• live

Price updated Aug 23, 2026