Museum of Lost Effects:The Systech Harmonic Energizer - tonefiend.com
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Son Of Kong EQ/Gain Boost/d.i., demo by Pete Thorn/Vintage King - YouTube
Spontaneous Audio Son of Kong EQ/Gain Pedal USED w/Box | Reverb
For Sale - Son of Kong Pedal/DI $325 | TalkBass.com