Bring your existing Hi-Fi and AV equipment into your Home Assistant smart home with Home Assistant Connect AUX-2 - adding connectivity to existing audio systems, home cinema equipment and other compatible devices, including older hardware without built-in smart home support.
Turn an existing stereo system into a smart music player by streaming audio to your amplifier or powered speakers, with support for synchronised multi-room playback through Music Assistant.
Automate compatible home cinema equipment, including AV receivers and projectors, using the two 3.5mm RS-232 connections. With a compatible USB to RS-485 adapter (not included), you can also connect supported energy monitoring and automation equipment.
Power and connect the AUX-2 with a single PoE (Power over Ethernet) injected cable, or use USB-C 5V 2A power alongside Ethernet or Wi-Fi. There's even a Grove port for further expansion, with switchable power.
Requires an existing Home Assistant system. Power supply not included. Additional adapters and connecting cables may be required.
Features
3.5mm analogue and optical (S/PDIF) audio output
Synchronised multi-room audio via Music Assistant
2x RS-232 ports for compatible AV equipment control
RS-485 support via USB adapter (adapter not included)
USB-A port supporting Connect ZWA-2 (Z-Wave) and ZBT-2 (Zigbee) adapters (adapters not included)
Built-in Bluetooth LE proxy with dedicated antenna
Ethernet and 2.4GHz Wi-Fi connectivity
Power: USB-C 5V 2A or Power over Ethernet (PoE)
ESPHome-based firmware with customisation support
Developed by Nabu Casa to support Home Assistant
Specifications
Model Number
NC-AUX-9758
EAN
860011789758
Processor
ESP32-S3R8
Memory
8MB PSRAM, 8MB flash
Audio DAC
TI PCM5122 (112dB SNR)
Audio Output
3.5mm analogue or optical (S/PDIF), output only
Analogue Audio
16-bit / 48kHz stereo
Digital Audio
16-bit / 48kHz stereo PCM (lossless)
Audio Codecs
FLAC, MP3, WAV
Multi-Room Audio
Music Assistant (Sendspin)
Serial Ports
2× 3.5mm RS-232 (±5V), TX/RX switch
USB-A
1x for connecting compatible accessories/adapters
Wi-Fi
2.4GHz, 802.11b/g/n
Bluetooth
Bluetooth 5 LE, proxy with up to 3 active connections
Ethernet
W5500 controller, Power over Ethernet (802.3af or better)
