0 db. If you think the highs are to high or harsh then lower them down to -3. That's like half the loudness I think.
You probably need a romote wire to turn on that amp unless your got a JBL and useing the rear speakers to tap the signal... You can wire the remote to the atenna power wire or accessory fuse.
You probably need a romote wire to turn on that amp unless your got a JBL and useing the rear speakers to tap the signal... You can wire the remote to the atenna power wire or accessory fuse.