DTS - Dolby Digital - 7.1 input The unit is flawless and works perfectly. It comes with the original box as well as the original learning remote. I will ship double boxed. I lost the original manual. I will print a copy and include it in the shipment. It is also available from manufacturer website. I have tried a number of preamp/processors and this was the best so far. It is dead quiet and has a full 7.1 analog pass-through. The quality of sound using a good CD-Player, SACD or otherwise was excellent. The only reason I am selling is because I moved to apartment so moved on to a receiver model. Asking $1100.00 plus shipping $40.00 (For Canada Please add $15.00). I will accept paypal, Money Order or check. Personal check will delay shipping. I will ship only to the confirmed address if Paypal is used. I will accept reasonable offers.