Onkyo TX-RZ900chat_bubble_outlineFrom real comments

Build quality gets a specific nod thanks to its toroidal transformer. One commenter singled out the use of a toroidal transformer as impressive, especially noting that most manufacturers cut this kind of component to save on production costs. This suggests the TX-RZ900 was built with more attention to internal power-supply quality than budget-focused competitors, which can matter for long-term reliability and amplifier performance, even though no other internal component details are discussed by commenters.

Getting Dolby Atmos to display requires the right speaker configuration. Multiple commenters explain that Atmos will not appear as an active source unless the receiver is set to a 5.1.2 layout with actual height or overhead speakers connected; simply telling the receiver you have 5.1.2 speakers can also fake the Atmos label without real overhead sound. One user, writing in Hungarian, called this behavior confusing and labeled it typical of Onkyo's approach to speaker configuration logic.

Once properly configured, at least one owner reports trouble-free Atmos playback. A user who owns the same receiver states that after setting it to 5.1.2, Atmos has worked flawlessly since the unit launched, countering concerns that the setup process leads to ongoing problems. However, a separate commenter raises an unresolved question about whether this series carries over DSP chip soldering issues seen on the HDMI/audio board of older Onkyo receivers, leaving long-term hardware reliability somewhat uncertain.