What new amp for my Merlins

I asked this question about 6mo ago. A lot of you told me to get the X upgrade first, I did and what a great improvement. So now I ask the same question again.
I am using an ARS filharmonia on my VSM-Mxe's and it is a wonderful amplifier.

It doesn't run out of steam like the Joule Stargates do and the little amplifer is built like a tank. There is no remote control, and the tubes do tend to put out a good bit of heat, but the sound is glorious and full with outstanding resolution and an incredible soundstage. The amplifier doesn't sound tubey in terms of a diffuse bass or rolled off high end, but does offer the microdynamics and air of tubes with a palpable midrange. It really is made for the Merlins.

My only criticism would be the lack of preamp outputs and remote control, but the trade off is worth it for world class sound.

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For those of you with the Ars, do you have the amp in your rack or on the floor by the speaker's? Exactly how much heat does it put out?
The reason for the delay was that they were in the process of moving their production site. I believe everything is back on line now.

I am interested in the heat issue as well. The amp could go on the top of my 3 shelf rack, but it would be nice to be able to place it below if I switch my source to a top loading cdp.