Hi all, Basically I'm looking to buy some small class T amps from eBay to power a number of ceiling speakers, but I am not sure whether to buy the TA2020, TA2021, or TA2024. TA2024 seems to be the oldest while TA2020 seems to be the cheapest, but the TA2021 is the most powerful. What are the general thoughts on the difference in terms of sound quality between these please? Also another thing is these amps obviously have a low power output. I don't like loud music but are they enough to fill a room? Any suggestions/advice welcome. Thanks.