Filter Standard To Deluxe Upgrade


1-2 week lead time

All purchases are final. Returns only accepted if there is a manufacturing defect.

The FILTER comes equipped with a top self, Burr Brown OPA2134 opamp chip, chosen for its transparent tonal quality and low noise. For the discerning guitarist desiring mastering grade EQ experience, the FILTER can be “upgraded” to be driven by a premium dual discrete Opamp, the same found in our PreDrive and LIFT.

Every standard can be shipped to us and be upgraded to the Deluxe version. Our shipping address for this is:

Stephen Pettyjohn
Attn: Pettyjohn Electronics Shop
981 E Cascade Ave
Sisters, OR 97759