Never heard this specific question ask on forum before. So like question says like to hear input especially from you guys that have experimented with many different amps which ones were warmest sounding to you. Can be 2/4 channel etc. May sound crazy but I'll start it off by saying the Arc KS125.2 was one of warmest I've had and much warmer than my 600.4 and several other amps I've installed in past.

 

Hertz hdp4
PA rz3000d

 

Dd d4

 

I'm not sure how much speaker selection has to do with it, but one of my favorite setups I had in my fairing was the Rockford Fosgate TM400x2AD with Focal EC165K speakers. I know the TM amp doesn't get the best reviews and gets a little warm, but my ear really liked this setup before the tweeters blew from my messing with the gains on a BT355 without the proper knowledge.

X2 on the D4

The Zapco ST204D worked really well with the 6x9s I have run.

 

HDP4 = 4 channel
JL 500/4 = Bridged 2 channel.

T.

 

I have one of the most expensive and highest sq rated class d 4 channels on the market and can say fully no disclose that the Arc was not much difference. The new amp is a bit different but when I have things cranked, the difference is nill. I can tell but most wouldn't even no a difference. Biggest difference I noticed was a bit more punch but the sq is on par with both amps with the Mosconi just a slight bit above the Arc.

 

Thanks guys I appreciate your feedback.