Sony STR-AN1000 vs Denon X1800H

The short answer

Buy the Denon AVR-X1800H if you are driving 4Ω speakers or planning height channels later: it states a 4–16Ω impedance range against the Sony's 6–16Ω, and nine processing channels where our AN1000 row has no processing-channel figure at all. Buy the Sony STR-AN1000 for a second HDMI output, a stated HDMI 2.1 board with four 2.1 ports, a third zone and IMAX Enhanced, none of which our Denon row matches — it states one HDMI output, no HDMI version and Zone 3 as an explicit No. What neither sheet settles is amplifier power: Sony's 165W is stated into 6Ω with ONE channel driven at 0.9% THD and Denon's 80W into 8Ω with two channels driven at 0.08%, three differences in method at once, so both figures are reported here and ranked nowhere — read them next to $948 and $849 in the price row above.

Reading the numbers honestly

The power ratings share no measurement axis at all. Sony states 165W into 6Ω with ONE channel driven at 0.9% THD; Denon states 80W into 8Ω with TWO channels driven at 0.08%. That is three differences in method at once — load, channels driven and distortion point — and our Sony row carries no 8Ω figure to bridge them, so the two stickers are reported on this page and ranked nowhere. What decides instead is the impedance range: 6–16Ω on the Sony against 4–16Ω on the Denon, which means a nominally 4Ω speaker sits outside the Sony's own stated rating and inside the Denon's. After that the rows trade. The Denon states nine processing channels where our AN1000 row records no processing-channel figure at all, and states a phono input the Sony row does not carry. The Sony states two HDMI outputs against one, HDMI version 2.1 with four 2.1 ports, Zone 3 as a Yes where the Denon states Zone 3 as an explicit No, and IMAX Enhanced. Room correction is Sony DCAC IX against Audyssey MultEQ XT with a microphone stated on both — two platforms, not two tiers.

Buy the Denon AVR-X1800H if you are driving 4Ω speakers or planning height channels later: it states a 4–16Ω impedance range against the Sony's 6–16Ω, and nine processing channels where our AN1000 row has no processing-channel figure at all. Buy the Sony STR-AN1000 for a second HDMI output, a stated HDMI 2.1 board with four 2.1 ports, a third zone and IMAX Enhanced, none of which our Denon row matches — it states one HDMI output, no HDMI version and Zone 3 as an explicit No. What neither sheet settles is amplifier power: Sony's 165W is stated into 6Ω with ONE channel driven at 0.9% THD and Denon's 80W into 8Ω with two channels driven at 0.08%, three differences in method at once, so both figures are reported here and ranked nowhere — read them next to $948 and $849 in the price row above.

Still deciding?

• The two power figures share no measurement axis: 165W into 6Ω with ONE channel driven at 0.9% THD against 80W into 8Ω with TWO channels driven at 0.08%, and our Sony row carries no 8Ω figure to bridge them — reported here, ranked nowhere.
• The field that actually decides a speaker match: 6–16Ω on the Sony against 4–16Ω on the Denon, so a nominally 4Ω speaker sits outside the Sony's own stated rating.
• Processing channels are stated on one row only — nine on the Denon, no figure at all on ours for the AN1000 — which is the difference for anyone adding heights on an external amplifier.
• The Sony's HDMI board is the more fully described: version 2.1, four 2.1 ports and two outputs, against a Denon row that records four 2.1 ports and a 40 Gbps figure but no version and only one output.
• Provenance honesty: both 40 Gbps HDMI figures here are retailer-sourced, and the Sony's 8K/30 passthrough entry carries no manufacturer sourcing either — three numbers to confirm before buying.
• Three-state honesty runs both ways: the Denon states Zone 3 as an explicit No where the Sony states Zone 3 as a Yes, and the Denon states a phono input where our Sony row simply has no phono field, at $948 vs $849 in the price row above.

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