• PEQ500A KIT is a full Pultec EQP-1A & EQP-1R type passive EQ circuit combined but with 8 extra low frequencies and 5 extra high frequencies. The BW (bandwidth) control for the high boost bell curve can go twice as wide as a normal Pultec and it can also do one thing I have never seen on any other Pultec or clone do. Pushing on the BW control will switch the high boost to a shelf with the BW control still varying the slope going into the shelf.
• The New A version has updated front panel graphics and uses expensive C0G caps for all audio caps for an extremely stable long-life EQ.
• Pairs of PEQ500A kits are shipped with hand-matched inductors, pots, and transformers for precision stereo matching.
• This kit requires good soldering skills.

Features for each Channel

• EQ In / out toggle switch with blue LED
• Electronic Balanced discrete opamp input to allow for large input levels.
• High Cut shelf from 0 to -16dB switchable to 5kHz, 10kHz, 20kHz.
• High Boost bell / shelf with variable BW / Slope from 0 to +16dB switchable 1kHz, 1k5kHz, 2kHz, 3kHz, 4kHz, 5kHz, 8kHz, 10kHz, 12kHz, 16kHz, 20kHz, 25kHz.
• Push on BW control switches from high boost bell to shelf with orange LED lit when in shelf mode
• Low Cut shelf from 0 to -16dB switchable 10Hz, 20Hz, 30Hz, 40Hz, 60Hz, 80Hz, 100Hz, 120Hz, 160Hz, 200Hz, 240Hz, 300Hz.
• Low Boost shelf from 0 to +16dB switchable 10Hz, 20Hz, 30Hz, 40Hz, 60Hz, 80Hz, 100Hz, 120Hz, 160Hz, 200Hz, 240Hz, 300Hz.
• Large JLM111PCB output transformer.
• API 500 +/-16v and GroupDIY 51X +/-24v compatible edge connector.

PEQ500A kit BUILD THREAD here