So if you've ever heard of the Interfax Harmonic Percolator, you also probably know that the originals are impossible to find, and expensive if you do find them.
This is a design based on the overall sonic footprint of the percolator, that carefully achieves the same tonal goal but without all the pesky obsolete parts. The circuit is fully tuned to cop the classic Harmonic Percolator tone with the toggle in the up position, while the down position preserves low end and lets bassists in on the party!
$115 shipped ConUS
Sound Clip on bass