Let’s just consider the audio system on the above mentioned Spyder as equipped from the factory. The speakers are not the problem with the transmission from the receiver, they are just there reproducing sound from the input of the weak FM receiver and its antenna’s ability to capture from the source. When I stream audio the clarity, power level, channel separation and stereo effect become more noticeable, improved and more open sounding. This is a motorcycle, not a car and like most motorcycles you can’t expect too much more.
Changing the speakers in a home stereo system is a huge benefit and probably the most important. Changing the source is also important in replication of the original recording. On a motorcycle your options to add bigger more powerful sounding speakers is very limited for a dramatic change. Finding replacement speakers to work within the confines of the amplifier is even harder. The easiest thing and least expensive is to stream the audio to the receiver to be played through the system or to get sound delivered to the helmet. When I change my input source from radio to streaming also avoid blasting commercial content, needless DJ chatter, news and other non-entertainment that is distracting. Listening to pre-recorded streaming I always know what I’m going to get with no sudden surprises. I believe streaming is the best option on the Spyder and the factory amplifier and speakers provide more than adequate sound quality. If you happen to be a musician, audiophile or have very high levels of expertise and expectations prepare to be disappointed but for the average listener I think you will be impressed with all things considered.