Bought a few peq15 for my customers they are a copy of the soundstream mpx4. The thing people must know is this a parametric witch means you can sweep across the secified range eg: Band 4= 4k-20khz you can boost or cut any frequency 4,001hz to 19,999hz. EG: If your car has resonance problems at 6000 hz with a flat tip screwdriver you can tune to this frequency and fix the issues by a boost or cut. If known how to use correctly it can be the most valuable component in youre system. It made my 6.5 inch component door speakers bass just come alive when i sweeped and found the right frequency to adjust.
Also thats how bose does there systems they find the right frequency to adjust and preset into memory.
With the peq 15 you basically have thousands of bands you can adjust.
Build quality:8 of 10. Pros: double sided boards, sealed volume and adjustment pots,film capacitors,seperate sub control
Cons: center detent not always in center,could use one more band.
