The AVR-3310CI and AVR-990 (both retailing for $1500) join the ranks of the AVR-4310CI and AVR-4810CI with Audyssey DSX. The upgrade will be available on Feburary 1st at a cost of $100. DSX will give the receivers the ability to add either height of expanded width channels by assigning other speakers or analogue output terminals to the additional speakers. No word yet on whether the upgrade will be applied to future offerings of the receivers or if it will remain a firmware upgrade option only.
Discuss "Denon Upgrades AVR-3310CI and AVR-990 to DSX" here. Read the article.