Firstly what amp are you using. That may be causing the problem. I would suggest you firstly try what the above posts recommend, many fo them are great guys with a lot of understanding of pickups, especially @cooljuk and @ARandall.
Try the series/parallel if you can, and tell us what amp you are...
A4 tends to have a very flat eq, and that brings out the lower mids. Also from what I have heard, it sounds very compressed too.
A2 will sound less compressed, and very open, not focused. It has a very sweet treble, lots of mids and a little less output.
Just throwing it out there, stuff is generally cheaper at Mercari. However, it's really important to view the listing properly because the listings are pretty vague most of the time. Most used items are sold by individuals, like you or me, not stores.
Me too. Very usable presets. I keep ABing them with the original recordings and they get pretty close.
I use a set of Samsung earphones, but they're highly recommended due to their very flat frequency response.