EQ1000 - Eclipse 6 Band 1/2 DIN Equalizer/Crossover FR-4 (Military-Spec) Anti-Vibration Circuit Boards Retractable Knobs for Easy Access to each Fader, Frequency, Level and Q Control and Precise Adjustment NOB Rotary Encoder for Master Level Control and EQ Defeat Function High-Pass and Low-Pass Filters for Front &Rear Channel and Subwoofer Output Adjustable 0 to 4 sec. turn on delay