With AllTalk TTS you can set different voices for dialogue and narration.
Make sure you have the SillyTavern staging branch installed.
How to switch branch in SillyTavern • How to switch branch SillyTavern
Github https://github.com/erew123/alltalk_tts
More about SillyTavern • SillyTavern
X (Twitter) / mustacheai
Music Michael Wyckoff Analog Sunrise (Boneworks OST)