DA-11 and DA-11.5 Known Issues  
 
  • Odd Noises When Using 96/24 "Rapture" Upgrade DACCard. The DA-10 Motherboard's +5VDC power supply can run a little low when powering the 24-bit DVD-A DACCard. This can result in no signal, or a garbled signal, or hissing noises in one or both channels. The solution is to remove the DACCard, locate R101 and solder a 10K ohm 1/4W resistor in parallel with it.