diff --git a/esphome/components/kt0803/__init__.py b/esphome/components/kt0803/__init__.py
index 3968a85afb..e2cc058812 100644
--- a/esphome/components/kt0803/__init__.py
+++ b/esphome/components/kt0803/__init__.py
@@ -303,7 +303,7 @@ CONFIG_SCHEMA = (
             cv.Optional(CONF_STANDBY_ENABLE, default=False): cv.boolean,
             cv.Optional(CONF_ALC_ATTACK_TIME, default="25us"): cv.enum(ALC_TIME),
             cv.Optional(CONF_ALC_DECAY_TIME, default="25us"): cv.enum(ALC_TIME),
-            cv.Optional(CONF_PA_BIAS, default=False): cv.boolean,
+            cv.Optional(CONF_PA_BIAS, default=True): cv.boolean,
             cv.Optional(CONF_AUDIO_LIMITER_LEVEL, default="0.875"): cv.enum(AUDIO_LIMITER_LEVEL),
             cv.Optional(CONF_SWITCH_MODE, default="Mute"): cv.enum(SWITCH_MODE),
             cv.Optional(CONF_SILENCE_HIGH, default="32mV"): cv.enum(SILENCE_HIGH),