Ресиверы — Yamaha RX-A6A

The RX-A6A is a 9.2-channel AVENTAGE AV receiver from Yamaha with processing for up to 11.2 channels, sitting between the 7.2-channel RX-A4A and the 11.2-channel RX-A8A. Compared with the RX-A4A it adds Auro-3D decoding, balanced XLR inputs, legacy video connections and distribution to up to three extra zones.

Key specs that matter

Rated output is 150 W per channel into 8 ohm across 20 Hz to 20 kHz with two channels driven at 0.06% THD, and 185 W into 8 ohm at 1 kHz with one channel driven at 0.9% THD. The seven HDMI inputs and three outputs follow HDMI 2.1 and HDCP 2.3, passing 4K120 and 8K60 at 40 Gbps, with eARC, 8K upscaling, conversion of analog video to HDMI and picture adjustment. Audio connections include three optical and two coaxial inputs, six analog inputs, an XLR pair, a phono input and 11.2-channel pre outs, and for video there are one component and two composite inputs. Dolby Atmos, DTS:X, Auro-3D, Dolby TrueHD and DTS-HD Master Audio are all decoded. The chassis measures 435 x 192 x 442 mm, and Yamaha lists the weight as 20.3 kg, noting that it varies by region.

Engineering and use context

Conversion is split between two ESS chips, a SABRE ES9026PRO and an ES9007S, both handling 384 kHz and 32-bit. The ES9026PRO includes a THD compensation function, and the D.O.P.G. grounding concept, short for DAC On Pure Ground, removes potential differences between audio circuit stages to cut ground noise. A Qualcomm QCS407 processor with 64-bit precision runs Surround AI and the 24 Cinema DSP HD3 programs. Mechanically, the A.R.T. Wedge fifth foot works with a double bottom plate to absorb vibration from the transformer, output transistors and heat sinks, and the H-cross frame adds rigidity while keeping transformer vibration away from the amplifier circuit. HDMI zone switching can send the HDMI input or other sources, including network content, digital and analog inputs and FM radio, to a TV or second system in another room, and an on-screen interface lets a user browse content from that zone. Zone 2 and Zone 3 can be powered from the receiver's own channels, Zone 4 is served over HDMI, and a separate Zone B HDMI output is also provided. Two 12 V triggers, IR in and out and third-party control drivers with IP control support integration into automated systems.

Pairing

The eleven-channel pre outs allow an external power amplifier to take over the front channels or to supply the two channels needed to use all 11.2 processed channels. The XLR input accepts balanced outputs from a Blu-ray or CD player, and the receiver is Roon Tested for network playback.

Alternatives

The Yamaha RX-A8A is the 11.2-channel AVENTAGE receiver with two ES9026PRO converters and a deeper 477 mm chassis weighing 21.4 kg.