Today I'm trying to help you decide which Spark Amp to get. There are 4 models nowadays, Spark 40, Spark Mini, Spark Go, and Spark 2, with the original Spark probably going to be discontinued (if it hasn't already). But you can still get it second hand, as all the other ones.
Enjoy!
You can get any of the Spark amps here (the link is an affiliate link): https://thmn.to/thocf/nl8ez2n1u3
My Patreon page for music and exclusives: http://patreon.com/elmojk