Add to Cart Quick view Ten-Tec Model 422-10 Optional 10 & 15 Meter Modification Board for the Centurion Amplifier NEW in Box Ten-Tec MSRP: Now: $149.99 Was: Ten-Tec Model 422-10 Optional 10 & 15 Meter Modification Board for the Centurion Amplifier NEW in Box. Unlike the original 10 meter optional board, this model also has an improved 15 meter low pass circuit for improved performance... MSRP: Now: $149.99 Was: Add to Cart Quick view Qty in Cart: 0 Quantity: Decrease Quantity: Increase Quantity: Price: MSRP: Now: $149.99 Was: Subtotal: Add to Cart