DX340 Amp Card Faceplate: dual 4.4mm BAL: This DX340 faceplate is for AMP12 and AMP14. When using AMP12 with the DX340, the line out works normally. However, the background noise is high when using phone out. Please be aware of this before purchasing. The AMP14 module works normally with the DX340.
DX340 Amp Card Faceplate: dual 3.5mm SE: This DX340 faceplate is compatible with AMP13.