Marshall DSL40 Full Repair Kit – OEM Tubes & Fuse Set
Bring your Marshall DSL40C or DSL40CR back to full performance with this complete OEM restoration kit. This package includes the correct tube set and every factory-rated fuse needed for service, repair, or preventative maintenance. No guessing — just the proper parts, exactly as Marshall intended.

🧪 OEM Tube Set (Red Marshall Logo)

⚡ OEM Fuse Set – Correct Values for DSL40

All fuses are correct factory values for the Marshall DSL40C & DSL40CR.

⚙️ Bias Information

• Biasing is required after installing the EL34 tubes
• The DSL40 uses a fixed-bias circuit — this must be adjusted by a qualified technician.
• Incorrect biasing can lead to tube failure or amplifier damage.

⚠ High Voltage Safety Notice

The Marshall DSL40 series contains internal voltages that can exceed 400 volts DC, even after the amplifier has been powered off. Only qualified technicians should service or open the chassis. If you are not experienced with high-voltage electronic equipment, we strongly recommend professional service.

• Always unplug the amplifier before servicing
• Filter capacitors can store lethal voltage after shutdown
• Use proper safety equipment when testing or biasing
• Never replace fuses with higher values than specified

🛠 Need Repair or Installation?

British Audio is an Authorized Marshall Service Provider based in Nashville, TN. If you’d like us to professionally service or test your amp:

• Email: repair@britishaudio.com
• Or complete our Repair Request Form:
  https://britishaudio.com/pages/repair-request

Why Choose British Audio?

As Nashville’s trusted source for Marshall parts and service, we supply only factory-spec tubes and components. Whether you're restoring, repairing, or preparing for a gig—this kit ensures your DSL40 performs at its best.

Get your amp back on stage — order your Marshall DSL40 Repair Kit today!