guys,
I know absolutely nothing about amps so please be gentle.

my current system installed on a 2012 Electra Glide Classic, SiriusXM Harley-Davidson Stereo AQ-MP-5UBT-HS with a set of 6.5″ Ultra Series Harley Speakers AQ-SPK6.5-4HB. It sounds good parked, but at highway speeds its just not enough.
I've been told that an amp would help. Any thoughts? suggestions?

Using Bluetooth from my iPhone it sounds great, but if I use either satellite or normal radio it sound sort of tinny at louder volumes. I ride with both full face and half helmets so i want to make sure I can hear my music.

Would appreciate any help.
the radio has a built in amp but i'd like a little more power. here are the specs of both the stereo and speakers

https://www.aquaticav.com/where-to-b...vidson-stereo/

Radio
Inputs: 1x internal USB, 1x 3.5mm jack, 1x stereo pair RCA Aux, Bluetooth
Outputs: 2x stereo pair RCA (4V), 1x RCA sub-out, 1x rear USB (charging only)
SiriusXM Ready: Yes
FM/AM Tuner: 18x FM & 12x AM Pre-set memory, switchable US/Euro frequencies
Amplifier Type: Class A/B (2 Ohm stable)
Power (max): 4x 45W (4 Ohms) / 4x 72W (2 Ohms)
Frequency Response: 20Hz – 20kHz
Operation Voltage: 9.6V – 14.4V DC
Current Draw: 6mA (standby), 7A (max)

https://www.aquaticav.com/where-to-b...aq-spk6-5-4hb/

Speakers
6.5″ 2-way Speaker
1″ Adjustable Tweeter
Waterproof
360W max (pair)
4 Ohm

 

on a budget a Cerwin Vega B52 would work. If you want a little better quality the JL Audio 280/4 bridged would be great.

 

Thank you. I will look into both of these

 

Not to meddle in your thread, I have a new in box JL MX280/4. I'd be willing to sell it, pm me if interested.