Swap out the 23.5 for the Mark Levinson 431 or the 432 and enjoy the bass.
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Thanks for your recommondation
432 is a very good amp and would solve the problem. Unfortunately I will have to spend 15'000$ for this device as prices double on the way to Europe. So ML is really on the way to fall out of the market here. I guess Harman has shifted the brand's focus on car hifi and cheap Chinese electronics (named ML and soon to come!!).
P.S.: Bye bye ML
so, why not consider other amps. Does it have to be Levinson? what about Audio Research 300.2, BAT VK600, McCormack DNA-500, Krell FPB?
can't you seel the ML and get a used Krell FPB600 on Audiogon, for example?
I think you may encounter a problem with the 2 different amps like that driving these speakers. You may get a timing issue where the bass will not be always on time with the rest of the spectrum. I don't think you'd like that. My advise is to go with a single amp or a monoblock configuration. This is more rational than using Rotel along with Levinson. What I would do, if I wanted to drive the 801s properly, I'd get one strong amp or a pair of monoblock amps. The 801s can not be underpowered and this is important.
I heard N801 with Classe and Mac equipment. I thought they sounded very smooth with Mac but had a little more life in them with the Classe. If your taste in music is mainly classical and jazz, I wouldn't hesitate to recommend McIntosh. I beleive the amps I heard were MC501 monoblocks. Unfortunately I can't recall the Classe model but it was one of their bigger amps.
A few weeks ago I borrowed a Adcom GFA 555 and a Hafler TA 1600 power amps from a friend. I bi-wired them to my 801's, Hafler on top and the Adcom for bass. The Hafler has adjustable outputs, so finite adjustments can be made for interesting results. The room is a whole lot cooler and it's a lot of fun tweaking. I bought a used Adcom 555 here and bridged both into mono mode. The bass is even better.
The adjustable outputs on the Hafler is a really cool feature and may be something to think about when putting a bi-amp set-up together.