Is there something preternatural going on at Electro-Harmonix? They've managed to come up with a hum eliminator called the HumDebugger that seems to completely remove all extraneous noise from your signal. The HumDebugger does this without resorting to noise-gating, which only removes noise when you're not playing, or low-pass filtering, which will dull your tone. The HumDebugger removes the noise only, leaving your sound intact and hum-free at any volume -- even with your Metal Muff cranked to 11.5. We're not sure what processes were involved in the making of this device, but we suspect a bit of Macumba.