Or one of these is cheaper http://www.studiospares.com/phantom-power-supplies/studiospares-48v-phantom-psu-2-channel/invt/448550/?htxt=%2FUvRjc0xAaKk26JwgsxcsV6E2gjpK53ITJCPcypNRrR6jhjYX3SDlEUFWaOdTpLU0xVcTayKYYOc%0Aw4t9gBa9qg%3D%3D