Yamaha RX-A670 AV Receiver w/HDMI, Dolby Atmos

Description

The Yamaha RX-A670 is a midrange 7.2-channel A/V receiver from Yamaha’s premium AVENTAGE line, designed for home theater enthusiasts seeking a balance of musicality, surround sound performance, and modern streaming features. Introduced as part of Yamaha’s AVENTAGE series, the RX-A670 sits above entry-level receivers by emphasizing chassis rigidity, vibration control, and higher-grade audio engineering intended to deliver cleaner, more dynamic sound. Although now discontinued, it remains popular on the used market thanks to its combination of Dolby Atmos, DTS:X, MusicCast multi-room audio, and strong reliability.

At its core, the RX-A670 is a 7.2-channel receiver capable of supporting immersive surround formats such as Dolby Atmos and DTS:X in a 5.1.2 speaker configuration. Yamaha rates it at 80 watts per channel (two channels driven), which is sufficient for most small to medium-sized home theater rooms. The receiver includes Yamaha’s proprietary Cinema DSP 3D processing, designed to create a larger and more enveloping soundstage for films, sports, and music playback. Yamaha’s YPAO automatic room calibration system helps optimize speaker distance, levels, and EQ to suit the listening environment.

One of the RX-A670’s major strengths is connectivity. It supports 4K/60Hz Ultra HD video pass-through, HDCP 2.2 copy protection, HDR formats including Dolby Vision and Hybrid Log-Gamma (via firmware updates), and BT.2020 color compatibility. Four HDMI inputs and one output provide support for modern streaming boxes, Blu-ray players, and gaming consoles, though it predates HDMI 2.1 and therefore lacks advanced gaming features such as 4K/120Hz and VRR. Built-in Wi-Fi, Bluetooth, AirPlay, and Yamaha’s MusicCast ecosystem allow users to stream music wirelessly throughout the home. Streaming services such as Spotify Connect, Pandora, TIDAL, and internet radio are supported depending on region and service availability.

Reviewers and owners generally praise the RX-A670 for its clean sound quality and solid construction. Yamaha describes the AVENTAGE line as offering “the highest levels of audio performance,” emphasizing anti-vibration design and premium engineering. Professional and enthusiast feedback often highlights the receiver’s clarity and ease of setup. Home theater users on Reddit have described it as a “solid upgrade” for affordable 4K compatibility and praised its dependable performance in conventional 5.1 and 7.1 systems, especially when paired with quality speakers.

There are limitations to consider. Compared with newer receivers, the RX-A670 lacks HDMI 2.1, eARC, 8K support, and newer gaming-oriented features. It also provides only four HDMI inputs, which may be restrictive for complex systems. Nevertheless, for users focused on movies, music streaming, and conventional 4K home theater playback, it remains a compelling used-market option with strong sound quality and Yamaha reliability.

Product Specifications

• Amplification: 7.2 channels
• Power Output: 80W per channel (8 ohms, 20Hz–20kHz, 2-channel driven)
• Surround Formats: Dolby Atmos, DTS:X, Dolby TrueHD, DTS-HD Master Audio
• Video Support: 4K/60Hz pass-through, HDR10, Dolby Vision, Hybrid Log-Gamma, BT.2020
• HDMI Connectivity: 4 inputs / 1 output with HDCP 2.2
• Wireless Features: Wi-Fi, Bluetooth, Apple AirPlay, MusicCast multi-room audio
• Streaming Services: Spotify Connect, Pandora, TIDAL, Deezer, internet radio
• Room Calibration: Yamaha YPAO automatic setup
• High-Resolution Audio: DSD 5.6 MHz, FLAC/WAV/AIFF 192kHz/24-bit playback
• Special Features: Cinema DSP 3D, A.R.T. anti-resonance wedge, Zone B audio output
• Dimensions: 17.1″ W × 6.4″ H × 13″ D
• Weight: 18.3 lbs.