Just bought a audio pro addon T3+, after searching high and low for a speaker with:
Line input
Good battery life (check 12-30hours)
No automatic gain compensation or compression (check)
Flatish response (good enough, see graph below)
Build quality seems great, solid and around 2kg, strong built in handle, nice and compact, no fuss controls, although I’d prefer a volume dial to -/+ buttons.
Available in a variety of colours, I went for the grey one.
Frequency response chart.
I also considered a Mackie Freeplay Home, but their technical support guy was neither knowledgeable or helpful, after 5 emails he still did not seem to grasp what I was asking, nor did he know if their product had automatic gain control or compression. First the mackie guy suggest I buy one of their PA systems, then a pair of studio monitors, after me already going to lengths to explain I wanted a portable speaker, for home use, and I had already told him I had studio monitors.
By contrast the audio pro tech support answered my question right away and gave me the correct information.
I think the price of the T3+ is pretty good (£150 RRP, but can be found for less, I paid £129) and it sounds very nice, and goes plenty loud enough for portable jams.