MetalHead Electronics External Marshall Mod Beta Registration EXTERNAL MARSHALL MOD BETA REGISTRATION Register for a chance to become one of 10 beta testers for the MetalHead Electronics External Marshall Mod. Beta Tester Price: $399 Regular Price: $699 No payment required to register. Your Name * Email Address * Country * State / Region Marshall Amplifier Model * Amplifier Year (if known) Why would you like to participate in beta testing? Phone Number (optional) I understand that registration does not guarantee selection. If selected, I agree to test the unit and provide feedback on its operation and sound. Selected participants will be contacted after final testing and confirmation of amplifier compatibility. No payment is collected during registration. Security Verification * Please type in the code