Since I plan to bi-amp my 4343's I am looking for suitable poweramps but before that I still can't figure out how to bi-amp my speakers properly, in other words: are there any sonical differences between vertical and horizontal bi-amping?
Vertical type is the easiest way as I won't have to balance the highs and lows - just the left and right channel. Also, with vertical bi-amp I can place the amplifier directly under the speaker, which is going to be placed on stands, about 15cm from the ground.


My second concern is choosing the right amplifier - I've been looking at MacroTech 1200 and 2400's but I have absolutely no idea how they sound (for example compared to Yammie P2200, which I know quite well, I just don't like buying the same stuff for the second time ). I know that the Crowns will be great on the bass but what about the mids and highs?
Yes, I'm also aware of the fan on the Macro which would have to be replaced for a silent one + a small low voltage transformer.