The Very Best Varitone on Planet Earth    


Tone Central

Varitones and Passive Voicing Filters

We are the leaders in passive voicing filters for guitar, electric bass and other stringed instruments. We've been making the world's best Varitones for years. We have our ears and heads into this stuff, and we've developed a line of Varitones and other passive voicing filters for a variety of applications. So what's so great about passive filtering as opposed to active preamp systems? Passive filtering is cleaner than active EQ. Passive filtering allows the natural character of your instrument to ring true. The EQ changes resulting from passive filtering remain in a reasonable range without drastic changes in perceived overall volume. Often with active systems, you adjust the EQ, and you also have to adjust the volume. With our Varitones and all our other passive filters, the sounds that you love are easily recreated. And last but not least, another advantage of passive filtering is that none of our passive filters require batteries. That's right, a ton of tone control and no battery, and that means a zero failure rate!

Guitar Varitone Bass Varitone Wiring Harnesses Blues Button Bass Contour Controls

"Okay ... Buy and install this Varitone.  Trust me, just do it. I sorta hate revealing my secret weapons, but David's work is just too cool to keep to myself.  First, it's pocket change; I've had bigger bar tabs.  The vintage tones are incredible, spot on to the whole Jamerson, Duck, Rainey thing (the Grail, in my humble opinion) and the brighter tones are also awesome.  And dig, you can get right back to the tone you want, any time, every time.  This thing is made by a guy who's not only a smokin', seasoned pro player, but a superior builder and a true student and historian of the deeper electric bass story and tradition.  And as if that ain't enough, try it for 30 days and if you're not thrilled, he'll refund your money.  You can thank me later."

Grammy-winning producer, songwriter and bassist Mark Prentice, Nashville, TN. His credits include Elvis Costello, John Fogarty, Lyle Lovett, BJ Thomas, Delbert McClinton, Ricky Skaggs, Olivia Newton-John, Amy Grant, Vince Gill, Johnny Cash, Don McLean, Crystal Gayle, Michael McDonald, Bruce Springsteen, Steven Van Zandt, Bruce Hornsby, Felix Cavaliere, The Young Rascals, Charley Pride, Steve Earle, Billy Preston, Ben E. King, John Oates, Pat Boone, Patti Page, Lady Antebellum, Bruce Cockburn, Bo Diddley, Mitch Ryder, others.


Order Varitone Wiring Harnesses and Control Plates

Detailed Explanations of Varitone Products

Stereo Bass Varitone info

Technical Notes on Varitone Demo Track

Guitar Varitone



david@certainbass.com or 314 762 0902

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