There is little point to loading the input side.
The reason is that most of the loading issues that you will hear are caused by the transformer itself and not what is driving it. The loading will be different depending on the cartridge used, but the point here with the loading is to prevent the transformer from ringing.
The cartridge won't ring at audio frequencies so there's no point in loading it. It does ring in ultrasonic or radio frequencies, but the transformer is likely blocking that so loading the output of the transformer is really the effective thing to do.
If the loading is too light (value too high) the transformer will ring, if too heavy (loading value too low) the transformer will roll off the highs. This is why the correct value is known as 'critical damping'.
The reason is that most of the loading issues that you will hear are caused by the transformer itself and not what is driving it. The loading will be different depending on the cartridge used, but the point here with the loading is to prevent the transformer from ringing.
The cartridge won't ring at audio frequencies so there's no point in loading it. It does ring in ultrasonic or radio frequencies, but the transformer is likely blocking that so loading the output of the transformer is really the effective thing to do.
If the loading is too light (value too high) the transformer will ring, if too heavy (loading value too low) the transformer will roll off the highs. This is why the correct value is known as 'critical damping'.