Room Correction Hardware options ?

Mr N- You can choose your own frequencies to EQ (anything between 20 and 20kHz). That's IF there's anything left that needs to be EQ'd after the TacT runs it's automatic correction algorithms. If you can operate a computer(and I assume you can, or you wouldn't be able to respond to this thread)- The TacT should present no problems. There's a brief learning curve, and should you encounter any difficulties at all- Boz(the designer) is a very helpful support person. There's also a TacT Users Group, and TacT Hackers site loaded with experienced Tact tweakers to aid in any and all situations. Lots of happy TacT owners, and support for new ones.

No doubt about it: The TacT 2.2XP! The Rives is an excellent PASSIVE unit, that will bring down peaks, but can do nothing about nulls. The TacT allows one to place the actives woofer of one's bi-amped system in the corners of the room where they can effectively load the room evenly and aligns them with the main speakers in the time domain. It also provides the option of a parametric EQ, if you want to curve the room via a steady-state(pink noise) signal in addition to the unit's automatic Fast Fourier Transform fuction(among a number of other features). If you are not thinking of actively bi-amping your system, the Tact RCS 2.0 preamp is what you'll want to investigate.

Since you didn't mention a desire to bi-amp, here's a page that offers info on the TacT RCS 2.0(download the free review): (http://www.avguide.com/products/product-477/) If you have no nulls that you'd like to bring up to level(highly unlikely): I would recommend the Rives unit as no other EQ will be as transparent in your system as a passive.

Mr N- The "stock" unit comes any way you order it. Are you planning on bi-amping your system? If not- the 2.2 is not what you want(it's designed two drive two woofer channels, as well as the main channels). Whether the 2.2 or 2.0: They can be configured any way you choose. The 2.0 only needs one DAC and one ADC to function fully analog through its inputs and outputs(fully balanced or single ended). If you were to purchase one used and it wasn't fully analog: The converters could be plugged in by you, or Boz could quickly do the install. It's as straightforward as plugging an audio driver board into your PC tower.

Mr N- I missed your question concerning interfacing a TacT with an integrated amp. The tact units(either 2.2 or 2.0) are pre-amps/control units/room correction devices and you'd need no other device between your analog line level source(phono pre, CDP, RTR tape, etc.) and your power amp(s). Of course you could also input the digital output of your CD transport directly into the excellent circuitry of the TacT unit and let it oversample and reconstruct your music signal. If you own an integrated amp already: If it has a pre out/main in loop, you would simply bypass the pre-amp section altogether and feed the output of the Tact into the main amp.

Mr N- Since you are not interested in bi-amping, you don't need the 2.2. The 2.0 or 2.0S (http://www.tactlab.com/Products/RCS20/index.html)are what you should be looking at and they can be equipped with analog ins and outs also. These TacTs have a parametric EQ that allows you to choose what frequencies you want to affect(up to twelve freqs, left and right independent of one another), the level of boost/cut(+/-12db), and "Q" or octave bandwidth that the filter affects.

The ADCs/DACs in the new RCS 2.0 and 2.0S have been upgraded since the first models(just in the past year). I've never owned the 2.0, but do own an RCS 2.2Xaaa, and the new converters are better than what I've got. My experience has been nothing less than excellent(and I'm extremely picky about transparency, being a sound technician and hearing live music AT LEAST twice a week).