@nbeathoven/homebridge-ma352

Homebridge platform plugin for controlling a McIntosh MA-352 through the companion local RS-232 bridge service in this repository.

Author: nbeathoven

Install

npm install -g @nbeathoven/homebridge-ma352

You also need the MA-352 bridge service running on a host that can talk to the amplifier over RS-232.

Repository: https://github.com/nbeathoven/homebridge-mcintosh-rs232

Revisions: see CHANGELOG.md in this package for release notes.

Homebridge Config

{
  "platform": "MA352Platform",
  "name": "McIntosh Amp",
  "host": "Epcilon",
  "port": 5000,
  "fallbackHosts": ["192.168.5.163"],
  "inputs": [
    { "value": 1, "name": "MC" },
    { "value": 3, "name": "CD1" },
    { "value": 6, "name": "AUX" }
  ]
}

If inputs is omitted, the plugin exposes the default 1-9 input map. If fallbackHosts is set, the plugin will retry those endpoints when the primary host is unreachable and log connectivity loss and recovery explicitly.

Features

• Power on/off
• Mute on/off
• Volume controlled two ways that stay in sync: a Lightbulb dimmer slider tile (a draggable 0-100 control in the Home app) and a TelevisionSpeaker linked to the TV (iPhone/iPad hardware volume buttons and the Control Center Remote). HomeKit 0-100 is mapped to the device 0-50 range. The dimmer appears under "Lights" in the Home app, but its on/off is a no-op so light scenes never change the volume level.
• Mute available both on the speaker and as a standalone switch for a quick toggle
• Input selection through a TV-style accessory
• Cached bridge state refresh via /state so HomeKit reads return quickly instead of blocking on multiple live HTTP calls
• Change-only Homebridge logs when the amp power, mute, input, or volume state changes
• Endpoint failover with explicit backend outage and recovery logging

Requirements

• Node.js 18+
• Homebridge 1.6+
• The MA-352 bridge service from the repository above