Marantz AV7706 11.2Ch 8K Ultra HD AV Review: Processor for Separates Systems

Who Should Buy It

Key Specifications

Overview

The Marantz AV7706 11.2Ch 8K Ultra HD AV is a surround pre-amplifier and processor, not a receiver. It decodes, calibrates and switches, then sends line level signals to separate power amplifiers that drive the speakers. The listing names the Marantz MM7055 and MM8077 as suitable partners, and it describes layouts from 2.1 up to 7.1.4 with virtual height effects.

The video and format sections of the published specification are unusually complete. Eight HDMI inputs include one dedicated 8K input, three outputs carry HDCP 2.3 and eARC, and the HDR list runs through HLG, Dynamic HDR, HDR10, HDR10+, Dolby Vision and BT.2020 with QFT, VRR and ALLM for gaming. Audio processing includes IMAX Enhanced, Auro-3D, Dolby Atmos, DTS:X and DTS Virtual:X.

Room correction is the full Audyssey Platinum suite with MultEQ XT32, Dynamic Volume, Dynamic EQ, LFC and Sub EQ HT, and HEOS handles streaming. The listing is silent on a phono input, dimensions, accessories and the type of pre-amplifier outputs, so this review marks those as not published where they affect a decision.

Power and Sound Quality

There is no power output to report because the AV7706 contains no power amplifier. Every channel must be driven by an external amplifier, and the listing points buyers to the Marantz MM7055 five channel and MM8077 seven channel amplifiers as natural matches. That architecture is the reason enthusiasts choose a processor: the amplifier can be sized to the speakers rather than fixed by the chassis.

The sound quality of a processor rests on its analog output stage and its digital processing. Marantz describes 11.2 channel processing with the full Audyssey Platinum suite, which means the processor can correct eleven speaker channels and two subwoofers with XT32 resolution filters. Sub EQ HT in particular equalizes two subwoofers independently, which is a meaningful advantage for bass evenness.

The sound score reflects the strength of the processing suite and the Marantz heritage in this category rather than any stated analog specification. Signal to noise ratio, output voltage and whether the pre outs are balanced or single ended are all unpublished, and those would matter to a buyer pairing the processor with high end amplification.

Connectivity and Inputs

Eight HDMI inputs and three outputs give the AV7706 more HDMI capacity than any receiver reviewed alongside it. One input is dedicated to 8K, all carry HDCP 2.3, and the outputs include eARC for television audio return. Three outputs allow a projector, a television and a second zone display at once.

The listing describes 8K/60 Hz and 4K/120 Hz pass through along with 8K upscaling for lower resolution sources. 4:4:4 Pure Color sub sampling is supported, which matters for text clarity when a computer is connected. Gaming features QFT, VRR and ALLM are all named, so current consoles keep their fast frame transport, variable refresh and low latency modes.

Audio inputs beyond HDMI are not itemized. The product listing refers to connecting all audio and media sources through the guided setup but does not count analog or digital inputs, and it makes no mention of a phono input. The pre-amplifier outputs that feed the power amplifiers are the most important connection on a processor, yet their type and count are not stated.

Formats, Processing and Room Correction

The immersive format list is complete for this generation. IMAX Enhanced, Auro-3D, Dolby Atmos and DTS:X are all decoded, and DTS Virtual:X provides simulated height effects for rooms without overhead speakers. The listing specifically describes a 7.1.4 layout as the top configuration, which uses all eleven processing channels.

Audyssey MultEQ XT32 is the top tier of Audyssey calibration, and the listing confirms the full Platinum suite around it. Dynamic Volume levels out loud and quiet passages, Dynamic EQ compensates for reduced bass and surround perception at low volume, LFC reduces low frequency bleed into adjacent rooms and Sub EQ HT calibrates two subwoofers separately.

On the video side the processor passes every mainstream HDR format and adds 8K upscaling, which converts lower resolution sources for an 8K display. The combination of a dedicated 8K input, 4K/120 pass through and the full gaming feature set makes the AV7706 as current as any receiver on video, despite being a processor.

• IMAX Enhanced, Auro-3D, Dolby Atmos and DTS:X decoding
• DTS Virtual:X for virtual height effects
• Audyssey MultEQ XT32 with Dynamic Volume, Dynamic EQ, LFC and Sub EQ HT
• 8K upscaling with 8K/60 Hz and 4K/120 Hz pass through
• HLG, Dynamic HDR, HDR10, HDR10+, Dolby Vision and BT.2020
• QFT, VRR and ALLM gaming support

Features, Streaming and Apps

HEOS is built in for streaming and multi-room. The listing names Spotify, TuneIn, Deezer and TIDAL among the services, reachable over Wi-Fi, Bluetooth or AirPlay 2, and it describes using the HEOS app across one room or many with other HEOS enabled products. For a Marantz or Denon household, the processor joins the existing group.

Voice control appears in the listing title, though the specific assistants are not named in the feature bullets. AirPlay 2 implies Siri based control from Apple devices, and HEOS products of this generation have generally supported the major assistants, but this review does not assert any beyond what is published.

The advanced graphical user interface is a highlighted feature. The listing says it guides the owner step by step through connecting every audio and media source, which is especially useful on a processor where amplifier assignment and output configuration add complexity. Second zone capabilities beyond the third HDMI output are not detailed.

Build, Design and Controls

Dimensions, weight, chassis material and finish are not published in the listing. A processor is generally shallower and lighter than a receiver because it carries no amplifier heat sinks or large transformer, which makes it easier to fit into a rack, but the exact figures should be confirmed with the manufacturer.

Front panel layout and the remote are not described. Marantz processors in this range have typically carried the brand's central display with side panels and a backlit remote, yet the published data does not confirm it for the AV7706 specifically.

The build score reflects the premium tier positioning and the established Marantz processor line while noting that no physical detail appears in the listing. Buyers investing in a separates system usually want the output stage and chassis described, and here they are not.

Setup and Daily Use

Setup starts with connecting the pre-amplifier outputs to the chosen power amplifiers, assigning channels to the speaker layout and running Audyssey MultEQ XT32 with the supplied microphone across several seating positions. The guided interface described in the listing walks through each of those steps, which lowers the barrier for a first separates build.

Once configured, daily use feels like any receiver. HDMI switching across eight inputs covers every source without unplugging, eARC returns television audio, and HEOS or AirPlay 2 handles music from a phone. Dynamic Volume and Dynamic EQ can be left on for late night viewing and switched off for critical listening.

The ongoing advantage of a processor is upgrade flexibility. Power amplifiers can be added or replaced as speakers change, and the processor itself can be swapped later without touching the amplification. For a household planning to grow a system over years, that modularity is the central reason to choose the AV7706.

Who Should Buy It

The Marantz AV7706 11.2Ch 8K Ultra HD AV is for the enthusiast who already owns or intends to buy separate power amplifiers. That buyer gets eleven channels of processing with the full Audyssey Platinum suite and a video section that matches the newest receivers, without paying for amplifier channels that would go unused.

It is also a sensible processor upgrade for someone whose older pre-amplifier lacks HDMI 2.1 features. The dedicated 8K input, 4K/120 pass through and the gaming feature set bring an existing amplifier and speaker system up to date, and HEOS adds modern streaming in the same step.

Buyers who want a single chassis should look at an AV receiver instead, and vinyl listeners should note that no phono input is mentioned. The premium tier price covers the processor alone, so the total system cost rises once amplification is added.

Alternatives Worth Considering

The Marantz Cinema 50 packs nine amplified channels, Audyssey MultEQ XT32 and HEOS into one chassis at a comparable tier. It cannot process eleven channels and has fewer HDMI inputs, but it needs no external amplifiers and includes a phono input, making it the simpler route for a room up to 5.2.4.

The Denon AVR-X4800H is another one box option with nine channels, ten HDMI ports, four subwoofer outputs and a phono input. Enthusiasts who want to keep the option of separates open can use its pre outs later, which makes it a middle path between a receiver and a dedicated processor.

For a larger separates build, the Marantz AV8805A processor offers 13.2 channel processing with a similar HDMI section. It costs more and suits rooms that will use more than eleven channels, while the AV7706 is the better value for a 7.1.4 ceiling.

Verdict

The Marantz AV7706 11.2Ch 8K Ultra HD AV is a premium tier processor with an unusually complete published specification for video, formats and calibration. Eight HDMI inputs, 8K upscaling, every mainstream HDR format, the gaming trio of QFT, VRR and ALLM, and the full Audyssey Platinum suite leave little to wish for on paper.

The score is held back by the absence of phono, dimensions, accessories and pre-amplifier output details, and by the inherent requirement for separate amplification. None of those are flaws in the design, but each affects the total cost and the system plan.

For a separates based theater up to 7.1.4, especially in a HEOS household, it is a clear recommendation. One box buyers should choose a receiver instead.

Strengths and Limitations

Alternatives to Consider

Yamaha RX-A8A

Enthusiasts building a 7.2.4 theater with multiple zones who want a flagship receiver with full bandwidth HDMI on every input and a deep streaming list.

Read the Yamaha RX-A8A review →

Yamaha RX-A6A

Buyers who want a 5.2.4 or 7.2.2 system today with the processing headroom to add an external amplifier for 7.2.4 later, plus multiple zones and deep streaming support.

Read the Yamaha RX-A6A review →

Marantz 40n W

Music first listeners who want a single premium stereo amplifier that handles streaming, a turntable and television sound without extra boxes.

Read the Marantz 40n W review →

Questions Buyers Ask