Audio Grade Silver
- 330i AG
- 350i AG
- 350i HC AG
- 381 AG
- 390i AG
Audio Grade Gold
- 330i
- 350i
- 350i HC
- 381
- 390i
Audio Grade Rhodium
- 330i RH
- 350i RH
- 381 RH
- 390i RH
Economy
- 5266i
- 320i
- 320i HC
- 360i
390i RH Audio Grade Power Plug
- Audio Grade
- Large screw down terminals
- Glass filled high temperature nylon front housing
- Polycarbonate rear housing
- Stainless hardware
- Wattgate Four Layer Plating Process*
- 16A/250VAC
- *WATTGATE Four Layer Plating Process
- 1. Oxygen free copper plating
- improves conductivity
- 2. Electroless nickel plating
- necessary to prevent the leeching of the copper through the pure gold layer
- 3. 24k gold plating
- improves conductivity
- 3. Pure Rhodium plating



