protected unsafe void EnableActionSetAmplifierAttenuation()
        {
            iCallbackSetAmplifierAttenuation = new CallbackSetAmplifierAttenuation(DoSetAmplifierAttenuation);
            IntPtr ptr = GCHandle.ToIntPtr(iGch);

            DvServiceLinnCoUkComponent1EnableActionSetAmplifierAttenuation(iHandle, iCallbackSetAmplifierAttenuation, ptr);
        }
 static extern void DvServiceLinnCoUkComponent1EnableActionSetAmplifierAttenuation(uint aHandle, CallbackSetAmplifierAttenuation aCallback, IntPtr aPtr);