Stage 7 - BMW FULL Audio Upgrade Sound System

Stage 7 BMW Full Audio Upgrade with MUSWAY M6v4-512K DSP Amplifier

Stage 7 is the full BMW audio upgrade package for customers who want to improve the whole system rather than changing one area at a time. It combines front components, rear coaxial speakers, underseat woofers, the current MUSWAY M6v4-512K DSP amplifier and BMW-specific plug-and-play wiring.

The result is a stronger, cleaner and more controlled BMW sound system while keeping the installation vehicle-specific and reversible when fitted correctly.

What is included?

• Musway CSB4.2C component speakers for the front speaker locations
• Musway CSB4.2X coaxial speakers for the rear speaker locations
• Musway CSB8W 2-ohm underseat woofers
• MUSWAY M6v4-512K 6-channel Class D DSP amplifier
• Vehicle-specific BMW plug-and-play wiring matched to the selected audio system option
• DSP setup support available if required

About the M6v4-512K DSP amplifier

The MUSWAY M6v4-512K combines six amplifier channels with eight-channel DSP processing. It supports high-level input with autosense, EPS for factory speaker-detection systems, optical S/PDIF input and processed RCA outputs. Verified amplifier specification is 6 x 85 watts RMS at 4 ohms or 6 x 140 watts RMS at 2 ohms at 14.4 V, with Dynamic Headroom output up to 6 x 100 watts RMS at 4 ohms or 6 x 175 watts RMS at 2 ohms.

Best for

Choose Stage 7 if you want the most complete Musway BMW package: front components, rear speakers, underseat bass, DSP amplification and wiring in one matched upgrade.

Before ordering

BMW audio systems vary by model, year and factory option. If you are unsure whether your car is Base Audio, HiFi 676 or RAM 2019+, send us your VIN or registration before ordering and we can help check the correct version. Some Base Audio cars may require BMW tweeter panels separately.