Class A power amp will give the best BASS SLAM?


I've been trying out various amps, looking for smooth highs obviously, but what power amp will give the best, tightest, bass slam? Let's try to keep the used price below $2000. Your input is appreciated!!!
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Best bass slam like everything else in audio is a relative term.

However, the tighest, deepest, most well-defined, and most natural bass I've yet heard come from the Nuforce Ref. 9 amps retailing new for $2500 a pair.

Of course, The Absolute Sound directly or indirectly comparing these little analog switching amps to the $35k ASR Emitter II amp (their favorite) and a few others in this category may help substantiate my claim. Not to mention TAS giving these Nuforce amps a Golden Ear Award and Amplifier of the Year Award.

Second runner up was my McCormack DNA-2 Revision A class A/B amplifier pushing 600 wpc into 4 ohm loads but that amp is over your budget.

What you are after is an amplifier that takes absolute control over your woofer's drivers.

And though proper amplification means everything in this regard to absolute bass slam, control, etc., speakers, speaker cables, ics, dedicated circuits/lines, speaker placement, line conditioners, racking systems, and just about every other aspect all play significant roles toward achieving this goal.

In other words no component is an island. One serious deficiency in any of the above categories and you may never know what your amp is truly capable of delivering.

After about 90 hours of burn-in and seeing what the Nuforce amps did in comparison to my now dearly departed yet still beloved DNA-2 Rev. A amp, I immediately sold that amp and became a dealer for Nuforce. So my opinion here should be considered a biased one.

And for what it's worth, my speaker load is 4ohm at 86 db sensitivity and recommended power rating is up to 500 wpc. That's a pretty demanding load by most any standard.

-IMO
Look for Threshold SA/4e stereo. Pure Class A power amp.
Don't let the 100W fool you. This amp will drive anything.
Spend a few more buck . Should be in the $2600-3K range.
Bedini 100.100. It blow me away what it did whan I mated it with my Infinity Monitor IIa's (they are table flat to 22Hz). I had tried 10 other amps with them, and none brought the low end to life like the Bedini.