JBL SP1 Preamp Processor with Marantz Processor DP 870 integrated by MSB Tchnology Upgraded to Dolby Digital 5.1.

We have been making audio products for over 20 years so there are many models and versions. We at MSB are committed to helping you keep both your hardware and firmware up to date. We can help you with hardware upgrades in many cases by replacing a now out-of-date module. Contact MSB or your dealer with your model and serial number and we can probably give you an idea of what options you have.