Well i've been running the A23 all morning.
The sound is solid, although the Coda amp that i had heard before seemed to be more robust.
HOWEVER, i am not using the same preamp this time (i think the Phillips took a turn for the worse) so it could just be a change in the preamp signal since the preamp now is a very tiny intergrated Denon unit.
The plus about the Halo is that it has a signal gain switch on the back for both L/R channels such that even with the tiny Denon preamp section, i can up the gain so it performs more up to spec.
I really like the Halo features. Gain controls, ground loop lift switch, balanced or unbalanced connections, 3 auto on controls (relay switch, manual or auto signal detect).
Just great.
The aesthetics are awesome and the amp feels pretty beefy for its small size (i would post pics but my cam is temporarily out of commission).
But so far the negatives are a big drawback. This unit gets pretty hot (cannot keep my hand on top for more than 3 or 4 seconds) and the local price is just ridiculous. At the present time i could buy one new, direct from the States and save about $400 on it.
Secondly, the Halo Hum exists. It is hard to discern during playback since i cannot A/B the unit with another amp but the hum is easily evident at 3 feet or less from the speaker when the preamp is turned off. I personally feel for nearly 2 grand an amp should NOT have any background noise.
