Yamaha's flagship 11.2-channel Aventage receiver with Surround:AI processing. All seven HDMI inputs pass 8K@60Hz and 4K@120Hz 4:4:4, while the two main outputs are full 40Gbps HDMI 2.1 — the dedicated Zone HDMI OUT 3 is bandwidth-limited to 4K@60Hz. Analog sources get five RCA pairs, a balanced XLR stereo input and an MM phono stage, plus three optical and two coaxial digital inputs. The wired network port is 100Mbps Fast Ethernet.
Yamaha’s flagship 11.2ch Aventage AVR with seven 8K HDMI 2.1 inputs, three outputs, XLR and phono inputs, and Surround:AI.
Device Information
- Manufacturer
- Yamaha
- Release Year
- 2021
- Model Number
- RX-A8A
- Category
- Audio Equipment
Available Ports
| Connector | Quantity | Label | Notes |
|---|---|---|---|
| HDMI 2.1 (Type A – Standard) | 7 | HDMI IN 1-7 | All inputs pass 8K@60Hz and 4K@120Hz 4:4:4, VRR, ALLM, HDCP 2.3 |
| HDMI 2.1 (Type A – Standard) | 2 | HDMI OUT 1-2 (MAIN) | 40Gbps outputs; OUT 1 supports eARC |
| HDMI 2.0b (Type A – Standard) | 1 | HDMI OUT 3 (ZONE OUT) | Dedicated Zone2/Zone4 output, limited to 4K@60Hz (not 40Gbps) |
| Optical TOSLINK (S/PDIF) | 3 | OPTICAL IN 1-3 | Digital audio inputs, up to 96kHz |
| Coaxial S/PDIF (RCA Digital) | 2 | COAXIAL IN 1-2 | Digital audio inputs, up to 192kHz |
| RCA Stereo Audio | 5 | AUDIO IN (line) | Five unbalanced line-level stereo pairs |
| XLR (3-pin Balanced Audio) | 2 | AUDIO 4 BALANCED IN (L/R) | Stereo balanced XLR input pair with selectable attenuator |
| RCA Stereo Audio | 1 | PHONO (MM) | Moving-magnet phono input with ground post |
| USB Type-A (USB 2.0) | 1 | USB (front) | USB memory playback, 1A power supply |
| RJ-45 (100BASE-TX Fast Ethernet) | 1 | NETWORK | 10/100 wired network for MusicCast streaming and control |
| 6.35mm TRS (1/4 inch Audio) | 1 | PHONES (front) | Front-panel 6.3mm headphone output |
Notes & Compatibility
HDMI OUT 1 (eARC) and OUT 2 are 40Gbps HDMI 2.1; HDMI OUT 3 is a dedicated Zone2/Zone4 output limited to 4K@60Hz. Early units required Yamaha’s HDMI 2.1 board update for full 4K@120Hz — all current stock ships updated. Not modeled per site convention: 13 speaker terminal pairs (11ch), 15-jack pre-out bank incl. balanced XLR front pre-outs and 2 subwoofer pre-outs, Zone 2/3 RCA outs, 2 composite + 1 component legacy video inputs, YPAO mic jack, remote in/out, 2x 12V triggers, FM/AM (DAB in EU) antenna.
