Bought the Blackstar Fly3 bass pair in December from Thomann, but was delivered late, and sat in the UK until my father visited me 3 weeks go. I have a Squier Jbass (flats) and an Acoustic Bass Guitar (tapes) and I love it. I have been practicing so much more. Before I ran into a soundcard and through Overlouds Markbass Studio software.
I don't notice much effect with the EQ though. With the mid point being brighter and the far left a fight being kind of the same. Sub adds a nice bottom to the Acoustic bass and adds some much needed volume to playing wit an acoustic guitar .Batteries last very well. For hours. I don't use the distortion on bass, but I like it on my Epiphone Dot (335 style Electric Giuitar) and Acoustic Guitar with a sound hole pick up.
I would receommend getting the Combo and extension pack, it works well enough with one speker, but the second does complete it. The duo pack also comes with a PSU which is handy, and the extension cab isn't avialable as seperate prchase for the bass. But I think the only difference between the Guitar extension and the Bass Extension is the grill, so if matching matters to you, get the the duo pack
Since it's arrived I've discovered it's now available in a shop here (Vietnam). They have a small Blackstar range. So if the local store has is open today (National Holiday) an they have the Guitar FLY3 in stock I think I will by today.
This has me wondering. the Emulated/headphone out cutsout the speaker when plugged in. If I can bypass this function, I can end the out from the BassFly3 into the GuitarFly3, meaning the guitar will share a pair and the bass gets 4. Which could address the volume balance with sitting on the beach with a bass and guitar.