Kicker line out converter, stock Subaru radio, kicker 600 watt (300rms) 4ohm 10", kicker 250.1 amp (125 watt RMS @4 ohms)
So with the volume turned down 1\4 volume, I can crank the gain and bass bass boost on the amp. Sounds good. More bass than expected. With the volume turned to 1\2 the amp...