I am in the market for a new AV Receiver and have settled on the Onkyo TX-SR605.
My question is that my previous receiver (Phillips SBC 1505U) had a built DSP specifically designed for creating 5.1 channels through headphones using Dolby Headphone technology (it did this exceptionally well BTW) so does the Onkyo DSP match or better it in that respects.
I watch movies and game via headphones only (Senn HD650) and i take sound quality very seriously. Reason why I want to upgrade is to experience the HD audio format and glorious 24/96 output. My current receiver support 24/48 and before you ask, yes I have considered X-fi's DSP capabilities via analogue and my conclusion through listening is that the Phillips receivers DSP is superior in that respects.
My system specs;
Core 2 Quad Q6600 @ 2.8ghz - [1.325v] - 400x7|ASUS P5K Deluxe WiFi-AP|8GB OCZ PC2-6400 Quad Channel Platinum Low Latency XTC Series @ 5-4-4-18|Gainward GeForce 8800 Ultra|Auzentech X-fi Prelude 7.1|750GB Western Digital Caviar SATA2/120GB Western Digital SATA2/120GB Seagate Barracuda SATA|Pioneer DVDRW16x Dual Layer Writer||Shark Case Case|OCZ ModXStream 780w Silent SLI PSU|Acer AL2623W 26" LCD Widescreen Monitor|Phillips SBC-HD1505U Receiver+Senn HD650