Getting loud is the easy part. Getting it to sound right takes tuning, and the HKI Mini DSP is what makes that possible. This compact digital signal processor sits between your source and your amps and lets us set the crossovers, time alignment, and EQ so your system sounds dialed in on a bike, not just cranked. On a bagger, sound is fighting wind, pipes, and speakers pointed in every direction. The DSP is how we pull it all back together and tune it to the music you actually ride to. Every complete Davidson Audio package is tuned with a DSP for exactly that reason, and you can add one on its own if you're building your system up over time. Works for motorcycle and car audio. New to DSP tuning? Download the HKI Mini DSP owner's manual, or have our team dial it in for you. Specifications Quantity: Single Signal Input: 4 RCA Signal Output: 8 RCA Frequency Response: 10–24 kHz Input EQ: 15 bands Output EQ: 8 bands per channel Dimensions: 5.9" L × 4.3" W × 1.7" H (149.86 × 109.22 × 43.18 mm) Frequently Asked Questions Do I need a DSP for my motorcycle audio?If you want it to sound as good as it is loud, yes. A DSP sets the crossovers, timing, and EQ for how sound moves around you on a bike. Without one, you've got power and no polish. Every complete Davidson package includes one. What's the difference between OEM tuning and a DSP?Your factory system gives you a basic EQ with only a handful of bands. A DSP gives you full parametric control, so we can correct the response and tune the system to your bike and your ear instead of a one-size-fits-all setting.