My 4 channel is just an Alpine PDR-50 that pushes 85 watt RMS. In regards to the JL Fix 86, it helps alot because it automatically corrects time-delayed factory outputs prior to signal summing and EQ correction equalizes. In other words, it equalizes the signal coming from the factory head unit . Maybe @Sting_NC_USA can expound..Is your Amplifier a DSP amp?
without using the JL Audio Fix-86, will it sound like crap? or negligible?