Denon AVR-S660Hchat_bubble_outlineFrom real comments

Setup is simple and the design is clean. Multiple owners describe the AVR-S660H as easy to set up, with one buyer confident enough to purchase a second unit for a relative. The front panel's lack of HDMI and USB ports also earns praise, since some viewers find exposed front connectors on other receivers messy or 'tacky.' For buyers wanting a straightforward out-of-the-box home theater upgrade without complicated menus or cluttered wiring, these comments suggest the S660H delivers a hassle-free unboxing and installation experience, at least for typical 5.1/5.2 movie and TV setups.

Power output specifications are confusing and inconsistent. Commenters repeatedly flag a mismatch between Denon's marketing, which cites 135W per channel, and the receiver's own spec sheet, which lists 75W per channel, leaving buyers unsure what to expect. One real-world user reports satisfaction running roughly 40 watts per channel driven with a separate amp handling bass duties. This suggests actual usable power is closer to the lower figure, and buyers focused on volume headroom or larger rooms should look past marketing numbers before assuming full 135W performance from every channel simultaneously.

VRR gaming glitches and scattered reliability complaints raise concerns. Several commenters report VRR not working properly for 4K 60Hz gaming and ask repeatedly whether Denon ever released a fix, with no confirmation appearing in the comments. Separately, one reviewer describes the S-Series as prone to distorted sound and heating issues, and another says a unit died within a month after switching from a long-used Yamaha receiver. A Klipsch speaker owner also found the bass weak, calling it fine for movies but poor for music, suggesting inconsistent performance across use cases.