The Amulet M Phantom UpgradeDo you already have an Amulet M system and would like it to be Phantom-powered? Well, we can easily upgrade your preamp to the new Amulet M Phantom If you would like to upgrade your Amulet M system to a Phantom or PLUS, here's how it works the upgrade is $50, plus $40 for installation labor, which includes a complete checkup of your system. If you have an M-V or an M-VT system, we will include the new smaller and lighter internal cable that will allow you to use your already-installed volume and tone wheel assembly with your newly upgraded preamp. You just need to send us your internal preamp/endpin assembly, and turnaround is generally 1 week (or less). Contact us to get a return authorization!