diff --git a/examples/xua_lite_example/src/app_xua_lite.xc b/examples/xua_lite_example/src/app_xua_lite.xc
index a0b0d164..99e7456c 100644
--- a/examples/xua_lite_example/src/app_xua_lite.xc
+++ b/examples/xua_lite_example/src/app_xua_lite.xc
@@ -96,7 +96,7 @@ int main()
                 AudioHwConfigure(DEFAULT_FREQ, i_i2c[0]);
             }
 
-            debug_printf("XUD SPEED: %d\n", (AUDIO_CLASS == 1) ? XUD_SPEED_FS : XUD_SPEED_HS);
+            debug_printf("XUD SPEED: %d\n", (AUDIO_CLASS == 1) ? XUD_SPEED_FS : XUD_SPEED_HS); //FS = 1, HS = 2
             par{
                 // Low level USB device layer core  
                 XUD_Main(c_ep_out, 2, c_ep_in, 3,
diff --git a/examples/xua_lite_example/src/audio_hub.xc b/examples/xua_lite_example/src/audio_hub.xc
index a73827e7..c3e2a1ff 100644
--- a/examples/xua_lite_example/src/audio_hub.xc
+++ b/examples/xua_lite_example/src/audio_hub.xc
@@ -43,7 +43,7 @@ void AudioHub(server i2s_frame_callback_if i2s,
       restart = I2S_NO_RESTART; // Keep on looping
       for (int i = 0; i < NUM_USB_CHAN_IN; i++) c_audio_hub <: samples_in[i];
       for (int i = 0; i < NUM_USB_CHAN_OUT; i++) c_audio_hub :> samples_out[i];
-      delay_microseconds(5); //Test backpressure tolerance
+      //delay_microseconds(5); //Test backpressure tolerance
     break;
     }
   }
diff --git a/examples/xua_lite_example/src/xua_buffer.xc b/examples/xua_lite_example/src/xua_buffer.xc
index f4ae6c27..e4e68880 100644
--- a/examples/xua_lite_example/src/xua_buffer.xc
+++ b/examples/xua_lite_example/src/xua_buffer.xc
@@ -253,7 +253,7 @@ void XUA_Buffer_lite(chanend c_ep0_out, chanend c_ep0_in, chanend c_aud_out, cha
           unpack_buff_to_samples(buffer_aud_out, num_samples_received_from_host, out_subslot_size, loopback_samples);
 
           fifo_ret_t ret = fifo_block_push(host_to_device_fifo_ptr, loopback_samples, num_samples_received_from_host);
-          if (ret != FIFO_SUCCESS) debug_printf("host_to_device_fifo full\n");
+          if (ret != FIFO_SUCCESS) debug_printf("h2f full\n");
           num_samples_to_send_to_host = num_samples_received_from_host;
           
           //Mark EP as ready for next frame from host
@@ -263,6 +263,7 @@ void XUA_Buffer_lite(chanend c_ep0_out, chanend c_ep0_in, chanend c_aud_out, cha
         //Send asynch explicit feedback value
         case XUD_SetData_Select(c_feedback, ep_feedback, result):
           XUD_SetReady_In(ep_feedback, (fb_clocks, unsigned char[]), (AUDIO_CLASS == 2) ? 4 : 3);
+          //debug_printf("0x%x\n", fb_clocks[0]);
         break;
 
         //Send samples to host
diff --git a/examples/xua_lite_example/src/xua_conf.h b/examples/xua_lite_example/src/xua_conf.h
index b24ed76a..1d81b46d 100644
--- a/examples/xua_lite_example/src/xua_conf.h
+++ b/examples/xua_lite_example/src/xua_conf.h
@@ -29,6 +29,6 @@
 
 #define UAC_FORCE_FEEDBACK_EP 1
 #define XUA_LITE              1           // Use simple/optimised USB buffer tasks
-#define AUDIO_CLASS           2
+#define AUDIO_CLASS           1
 
 #endif