diff --git a/main/audio_codecs/es8388_audio_codec.cc b/main/audio_codecs/es8388_audio_codec.cc
index 432f4894..347ef119 100644
--- a/main/audio_codecs/es8388_audio_codec.cc
+++ b/main/audio_codecs/es8388_audio_codec.cc
@@ -149,7 +149,7 @@ void Es8388AudioCodec::EnableInput(bool enable) {
             .mclk_multiple = 0,
         };
         ESP_ERROR_CHECK(esp_codec_dev_open(input_dev_, &fs));
-        ESP_ERROR_CHECK(esp_codec_dev_set_in_gain(input_dev_, 40.0));
+        ESP_ERROR_CHECK(esp_codec_dev_set_in_gain(input_dev_, 24.0));
     } else {
         ESP_ERROR_CHECK(esp_codec_dev_close(input_dev_));
     }
@@ -170,6 +170,14 @@ void Es8388AudioCodec::EnableOutput(bool enable) {
         };
         ESP_ERROR_CHECK(esp_codec_dev_open(output_dev_, &fs));
         ESP_ERROR_CHECK(esp_codec_dev_set_out_vol(output_dev_, output_volume_));
+
+        // Set analog output volume to 0dB, default is -45dB
+        uint8_t reg_val = 30; // 0dB
+        uint8_t regs[] = { 46, 47, 48, 49 }; // HP_LVOL, HP_RVOL, SPK_LVOL, SPK_RVOL
+        for (uint8_t reg : regs) {
+            ctrl_if_->write_reg(ctrl_if_, reg, 1, &reg_val, 1);
+        }
+
         if (pa_pin_ != GPIO_NUM_NC) {
             gpio_set_level(pa_pin_, 1);
         }
@@ -195,11 +203,3 @@ int Es8388AudioCodec::Write(const int16_t* data, int samples) {
     }
     return samples;
 }
-
-void Es8388AudioCodec::WriteReg(uint8_t reg_addr, uint8_t data) {
-    if (ctrl_if_ != nullptr) {
-        ctrl_if_->write_reg(ctrl_if_, reg_addr, 1, &data, 1);
-    } else {
-        ESP_LOGE(TAG, "Control interface is not initialized");
-    }
-}
diff --git a/main/audio_codecs/es8388_audio_codec.h b/main/audio_codecs/es8388_audio_codec.h
index f9df32c8..10807a41 100644
--- a/main/audio_codecs/es8388_audio_codec.h
+++ b/main/audio_codecs/es8388_audio_codec.h
@@ -32,8 +32,6 @@ public:
     virtual void SetOutputVolume(int volume) override;
     virtual void EnableInput(bool enable) override;
     virtual void EnableOutput(bool enable) override;
-
-    void WriteReg(uint8_t reg_addr, uint8_t data);
 };
 
 #endif // _ES8388_AUDIO_CODEC_H
diff --git a/main/boards/atk-dnesp32s3/atk_dnesp32s3.cc b/main/boards/atk-dnesp32s3/atk_dnesp32s3.cc
index 764803f4..663f86a6 100644
--- a/main/boards/atk-dnesp32s3/atk_dnesp32s3.cc
+++ b/main/boards/atk-dnesp32s3/atk_dnesp32s3.cc
@@ -167,10 +167,6 @@ public:
             audio_codec = new Es8388AudioCodec(i2c_bus_, I2C_NUM_0, AUDIO_INPUT_SAMPLE_RATE, AUDIO_OUTPUT_SAMPLE_RATE,
                 AUDIO_I2S_GPIO_MCLK, AUDIO_I2S_GPIO_BCLK, AUDIO_I2S_GPIO_WS, AUDIO_I2S_GPIO_DOUT, AUDIO_I2S_GPIO_DIN,
                 GPIO_NUM_NC, AUDIO_CODEC_ES8388_ADDR);
-
-            audio_codec->SetOutputVolume(AUDIO_DEFAULT_OUTPUT_VOLUME);  //设置默认音量
-            audio_codec->WriteReg(0x30, AUDIO_ADD_OUTPUT_VOLUME);
-            audio_codec->WriteReg(0x31, AUDIO_ADD_OUTPUT_VOLUME);//音量增益设置
         }
         return audio_codec;
     }
diff --git a/main/boards/atk-dnesp32s3/config.h b/main/boards/atk-dnesp32s3/config.h
index cbe72f7a..c91dd706 100644
--- a/main/boards/atk-dnesp32s3/config.h
+++ b/main/boards/atk-dnesp32s3/config.h
@@ -7,8 +7,6 @@
 
 #define AUDIO_INPUT_SAMPLE_RATE      24000
 #define AUDIO_OUTPUT_SAMPLE_RATE     24000
-#define AUDIO_DEFAULT_OUTPUT_VOLUME  90
-#define AUDIO_ADD_OUTPUT_VOLUME      90
 
 #define AUDIO_I2S_GPIO_MCLK GPIO_NUM_3
 #define AUDIO_I2S_GPIO_WS GPIO_NUM_9