NOTE: This is now in the FAQ section.... This is a rough draft of a new FAQ to describe what a "filter" is. Let me know what you think!...

The BA Buffer for active pickups has been re-designed with a screw connection for the positive battery connection. This makes it much...

The Focus is on Painless Installation! Solid round shafts let you orient your knobs the way you want. All bushings are 10mm long for...

A comparison of the Underhill Full English preamp and another preamp with the same features (push-pull Q boost, treble boost). Identical...

We've been so busy working on new stuff for next year that I needed a break, so I made some "Pumpkin Spice" cables to send off with...

Nothing has changed from our informal policy (we haven't actually had any defects to warranty so far!), but I finally got around to...

These inexpensive knobs have excellent fit and finish, and a recess that will clear 1/2" Pot Nuts. For a flush fit, the shaft needs to...

Preamps are tested and shipped with all of the cables connected. If you are re-arranging or changing modules or cables, MAKE SURE THAT...

After three years of one day order delivery, We are taking next week off! Orders placed next week will start going out July 8. Thanks for...

My great bassist friend Wally came for a visit, and we recorded some demos of the Underhill filter preamp. This is the first of at least...

Andy posted a great video of a new bass he modded with a Multicoil Full English and Turner pickups. Check it out.

I have added the "Cosmic" and "Cosmic Crisp" configurations to the list of pre-configured Filter Preamps! They are low-power easy-to-use...

The custom pots finally arrived, and the CVS Volume 6.1 module is now available for $22.50. The main difference is the size, it is more...

The ESB Bass EQ and EST Treble EQ are now available in Preamp Parts. Similar in range to the EPB and EPT, but with a gentle first order...

If you are looking for technical specs on the various preamp modules, you can find them in the store pages. Go to Parts, and click on the...

I made basic wiring diagrams for one and two pickup installations. Since preamp systems are shipped with all the modules connected, this...

The BA and B5 buffers are now available in limited quantities (more in a week or two). The BA is for active pickups with high output,...

To give you an idea of what a Gen6 install looks like, here's a Paradactyl Uno (EPL and EPH EQ modules) with a coil switch in a small...

These are the two parametric EQ modules that were combined into the original Paradactyl preamp. Pro tip: Any EQ modules can be used...

Here are some diagrams showing the trimmer positions for various Q levels on the FS Filter (MED and HI switch positions), and FP Filter...