(Skooter - if I'm jacking your thread, kick me out - no offense taken)
AVGeek/Laf - thanks for the help.
I got a reply to my questions from the Ampli-rider dude:
"The AmpliRider is able to output 0.2 watts (200 mW) of RMS power into a pair of 8-ohm speakers or headphones.
You are right, any distortion added to the audio before the amp will be sent through and come out louder. Using the amp can take some strain off the music player so if the noises were due to the player straining then the amp could help to make things sound better. The amp will simply amplify whatever power is being delivered from the output jack on your phone.
Many owners have mounted the remote controller module under a panel. Since water can get in under the gap between the knob, some people have pulled off the knob, put a rubber washer under it, then put the knob back on. The washer provides a bit more of a seal. I think a #10 O-ring works actually. Here is a link:
https://www.homedepot.com/buy/danco-10-o-rings-10-pack--96727.html#.UR0VaZa1Z_A
The AmpliRider draws about 250 milliamps (0.25 amps) at maximum. You could put a 1/4 or 1/3 amp fuse inline with the power cord to be safe. Because the amp doesn't drain much current, it could be shared on the same power line as other devices. You should not have any issues with noise and interference
The AmpliRider is being offered directly for the price of U.S. $80. This includes a 6ft audio connection cord and the cost to deliver the amp to your address by fully insured, Airmail shipping.
If you would like to order an amplifier there is a page on the website that enables the use of Paypal or a credit card:
https://electric-avenues.com/audio/order/
Other methods include sending a check, a money order, or a bank transfer but if you have a form of payment that works best for you, I will be happy to hear."
(Back to Pants)
Wish he sold it on Amazon, but I guess if I use Paypal, my purchase is protected?
It's kind of pricey, but I like it. I'm gonna check out the Boostaroo, but failing a revelation, I think I'm gonna pull the Ampli-Rider trigger.
Cheers.