We've tested this system and found it to be loud, crisp, and clean.  We used a decibel meter to measure the sound and it was in line with other available top brand audio systems.  

Complete Installation Video Here

This package includes:

• Two 300 Watt Max full-range weatherproof 6.5” speakers
• A 600 Watt compact weatherproof 4 channel, class D amplifier, with model-specific amplifier mounting plates
• Boss Audio Speaker Grilles for – 1998-2013 Electra, 2014 and up Street Glide, and 2015 and up Road Glide
• Speaker Impedance: 4 Ohms, Frequency: 100 Hz to 18 kHz, Sensitivity: 90 dB
• 1” (25mm) dome tweeter
• Loud and crisp speakers feature a rubber surround, poly injection cone, and a stamped steel basket
• Professional reflash of your factory radio is necessary after speaker installation in order to avoid speaker damage and obtain the correct/optimal sound quality and performance (We show this in our installation video) 

Get Saddlebag Lid Speaker Kit Here

• Fits 1998 to present Road Glide, Street Glide, and Electra
• Front speaker and amp system only
• Replacement Boss Audio speaker grills for 2014 to present Street Glide, 2015 to present Road Glide, and 1998 to 2013 Electra