Available as an assembled Module and as a DIY project.
This Module is currently available.
5 BAND + HPF active EQ.
FREQ500 is a very powerful 500 module with fully variable 5 BAND + HPF active EQ. EQ that sounds natural.
EQ circuit is a sidechain feed forward equaliser so has extremely low noise floor even at full boost
All 5 BANDS have 12dB boost and pull for 12dB cut.
Dual colour led with Green to show boost and red to show cut.
Each of the 5 bands has a internal jumper to change between 12dB or 6dB maximum boost/cut.
HIGH Shelf Frequency sweepable from 2k to 20k @ 6dB per octave. Pull frequency pot for 12dB per octave and orange led on.
HI MID Frequency sweepable from 2k to 20k @ BW of 2 octaves. Pull frequency pot for BW of 1 octave and orange led on.
MID Frequency sweepable from 400 to 4k @ BW of 2 octaves. Pull frequency pot for BW of 1 octave and orange led on.
LO Mid Frequency sweepable from 100 to 1k @ BW of 2 octaves. Pull frequency pot for BW of 1 octave and orange led on.
LOW Shelf Frequency sweepable from 20 to 200Hz @ 6dB per octave. Pull frequency pot for 12dB per octave and orange led on.
HPF Frequency sweepable from 20 to 200Hz @ 6dB per octave. Pull frequency pot for 12dB per octave and orange led on.
EQ in / out toggle switch with blue LED
HPF in / out toggle switch with yellow LED
Electronic Balanced input and out.
All pots dual 10k linear with electronic log circuit for best stereo matching.
All pots have DPDT pull switch built in.
Double sided Gold plated rear edge connector.
Specifications for FREQ500
Frequency Response +/-0.5dB 5Hz to 70Khz, +/-3dB 2Hz to 200khz.
THD = 0.0015% (mostly 2nd harmonic).
Current draw @ +/-16v 130mA.
https://www.jlmaudio.com/shop/freq500.html?display_tax_prices=1
These merchants probably sell this module. Huh?