Presonus AIR18s Active 18" Subwoofer with DSP Ashly This means it can deliver

This means it can deliver 300 milliamps to your two tube preamps and still have over 1000 milliamps left in the pool

Your system will sound as a whole

Chassis type: Pressed steel

API 215L Discrete HP/LP Sweep Filter

and lots of high-end air

Presonus AIR18s Active 18" Subwoofer with DSP Ashly This means it can deliverPresonus AIR 18s Active 18 Subwoofer with DSP Equally at home in mobile and installed systems, PreSonus AIR18s active subwoofers feature a 18 inch LF driver, driven by 1,200W of Class D power for a powerful, clear, and accurate low end punch down to 35 Hz. DSP presets enable extended low end performance and let you create ground stacked or endfire subwoofer arrays. A variable alignment delay properly aligns your three way system. Use the lowpass