AM904B Filter Upgrade

DIY KIT | AM904B Filter Upgrade | Build Manual (PDF) | You Tube

DESCRIPTION The AM904B Filter Upgrade is a kit for upgrading your Behringer 904B High Pass Filter module to the original 1971 version from the Moog Modular System 55.  

The kit assumed the customer already has the Daughter Board PCB that attaches to the rear of the Behringer PCB with included PCB standoffs. It is provided by a AM904C module.

This PCB is populated with hand matched Tropical Fish capacitors and header pins. The capacitors are the same type used in the original and replace the low cost Behringer versions.

The customer must carefully desolder the original capacitors and replace them with header sockets. Experience of soldering and desoldering is MANDATORY. 

The upgraded 904B module delivers a faithful reproduction of the 1971 Moog filter with the correct  capacitor values and a high quality sound. 

Build instructions are here: AM904B Project Notes V1.0.pdf

WHAT IS IN THE KIT The kit includes 4x 680nf and 4x 390nf tropical fish capacitors and 12x headers and sockets.

PRODUCT STATUS: IN PRODUCTION