       } 
      break;
     case '1':
-      if (!amp) Serial.println(F("Amplifier is off!"));
+      if (!amp) Serial.println(F("Amplifier is off! (HIGH)"));
       Serial.println(F("Pin 6 will give short tones. Send Space to stop."));
       digitalWrite(6,LOW);
-      while(Serial.available() == 0)
+      while(Serial.available()==0)
       {
         tone(11,800,100);
         delay(200);

 /* NOKO Diagnostics V0.2 31.05.2017 - Nikolai Radke
  *  
  *  Sketch for testing NOKO functions.
  *  This sketch aims to be easy. Clear source code and no libraries.

      mp3.write("\x7E\x02\x0D\xEF");     // Play
      break;
  }
  Serial.read();
  delay(100);
  Serial.println("\nDone.\n");
}

