I have found that there is a lot of value in direct marketed products. You can try them out in your own room with your own equipment and return them if you don't like them and are only out return shipping.

I would consider the Emotiva XSP-1 preamp (it has HT bypass) and a pair of Emotiva XPA-1 power amps. Plenty of robust neutral power for those high sensitivity Klipsch's and a feature rich preamp. For a DAC I would look no further than the Schiit Gungnir USB DAC. All units fully differential balanced.

http://shop.emotiva.com/collections/processors/products/xsp1

http://shop.emotiva.com/collections/amplifiers/products/xpa1 http://www.hometheaterhifi.com/power-amplifiers/power-amplifiers-reviews/a-secrets-power-amplifier-review98.html

http://schiit.com/cart/index.php?main_page=product_info&cPath=0&products_id=11

You would likely have to spend at least $7,500 to match the performance and quality of these items.