If you can't do a lot of treatments (at least put up some cornerbusters of a soffit system that incorporates treatments). Then make sure to setup a near field listening position. And look for a speaker like Wilson's where they are aimed directly at the listener to lessen the side wall interactions. some speakers require them to be faced forward to create the soundstage instead of towed in.
I own a Tact and it does help, but you have to upgrade the powersupply for it to be considered depending on the level of your system. Now I own the 2.2x and I use to own the M2150 integrated and that was a bargain slayer. and yes the 9 eq modes can be used to make unbearable recording listenable. Sub integration is amazing when used with 2 DAC cards because of the flexibility of placing the speakers in the best position for naturalness and imaging and not being concerned about bass.
I own a Tact and it does help, but you have to upgrade the powersupply for it to be considered depending on the level of your system. Now I own the 2.2x and I use to own the M2150 integrated and that was a bargain slayer. and yes the 9 eq modes can be used to make unbearable recording listenable. Sub integration is amazing when used with 2 DAC cards because of the flexibility of placing the speakers in the best position for naturalness and imaging and not being concerned about bass.