Masimo Corp. (Sound United): Denon AVR-X3800H stays a flexible 9.4-channel AV receiver

Responsible: ad hoc news Products & Consumer Desk. Reviewed prior to publication on June 14, 2026 at 1:15:29 PM ET. Details in the imprint.

Denon's AVR-X3800H is a current 9.4-channel AV receiver that sits near the center of Sound United's home theater lineup, and it is built for buyers who want strong HDMI support, flexible speaker routing, and room correction in one box. Denon lists it as a 9.4-channel receiver with 105 watts per channel, 8K/60Hz and 4K/120Hz pass-through, and support for Dolby Atmos, DTS:X, and Auro-3D.

That feature set matters because the AVR-X3800H is not aimed at casual TV listening alone. It is designed for U.S. home theater setups that may start with five speakers and a subwoofer, then expand toward a larger surround system, with four independent subwoofer outputs available for more precise bass management. Denon also positions it as a networked receiver, with built-in HEOS multiroom support and voice assistant compatibility for modern living-room use.

What makes the AVR-X3800H stand out

The AVR-X3800H is especially notable for its processing flexibility. Denon says the receiver supports 11.4-channel processing, which means users can add external amplification later and grow into a more complex layout without replacing the core unit. For enthusiasts, that future-proofing is often as important as the headline power rating, because it gives the model a longer useful life than lower-tier receivers.

Another practical advantage is calibration. The receiver includes Audyssey MultEQ XT32 room correction, a feature that helps adjust sound for the dimensions and surfaces of a real room rather than an idealized demo space. In everyday terms, that can matter as much as raw wattage, especially in U.S. living rooms where open floor plans, hard floors, and mixed speaker placement can all color the sound.

Denon also sells the AVR-X3800H through the mainstream U.S. audio channel rather than as a specialty-only product. It has been offered through major home theater retailers and is widely discussed in enthusiast circles, which has helped it become a reference point in the midrange receiver class. That makes it a useful product for Masimo's consumer-audio portfolio because it bridges premium features and a broad audience.

The receiver's place inside the portfolio is straightforward: it is part of the Denon brand family that Sound United uses to address dedicated home theater buyers, while the broader Masimo consumer segment still spans headphones, speakers, and other audio hardware. In that sense, the AVR-X3800H represents the kind of product that gives the company reach beyond headphones and into the more technically demanding AV receiver market.

Shares of Masimo Corp. (Sound United) (US5747951003, ticker MASI) traded at $179.95 on Nasdaq on June 13, 2026.

This article was created with a.i. assistance and editorially reviewed. Product information is provided without warranty; prices and availability may change at any time. Not investment advice, not a buy or sell recommendation. Trading in securities carries risks up to the total loss of capital.