Together with or without Home Assistant.
Read this in other languages: English, Русский язык.
After I literally found the old speakers, it was decided that I make voice alerts for my smart home. In order to power the speakers, an amplifier is needed - I chose the 2 x 50W TDA7492 Class D High-Power Digital Amplifier Board. I am not a music lover, and for the operation of my speakers, this amplifier is enough.
At first, I used a separate Raspberry Pi 1 with Volumio. Everything worked fine, but after updating Volumio in the summer of 2019, something broke and I had to use another image - Pi MusicBox. Such a bunch can be used without home automation.
Then, I decided to use it on the same Raspberry Pi on which Hass.io is installed. For a long time, I could not find a suitable addition, but eventually, the Mopidy addon for hass.io for hass.io was found.
Since the speakers are used only for voice alerts, it was found that they hiss in standby mode - perhaps the wire is of poor quality, the amplifier is not the best, or, more likely, because it does NOT use DAC+ ADC. In any case, the solution was the Sonoff SV relay, which supplies voltage to the amplifier before the announcement, and de-energizes the amplifier after.
I use the ESPHome Hass.io Add-On to compile yaml. I chose this firmware specifically because of the elementary integration in the Home Assistant:
In automations.yaml, there are various rules for voice alerts, and in configuration.yaml - settings for free Text to Speech (TTS). Sample sound (RU) in the file: ced7f955cfb440b12c419befd25ffa7fd7854989_ru_-_google_translate.mp3.
