loading resistor question

Huh?

Just got my Vishay TX2575 pair. Installed them and they blew away my skepticism. They really do sound much better than the stock Sutherland resistors. I can't believe it but my ears tell me different.

The music has much more delicacy and you hear more nuances and there is a sense of the music floating with instruments more separated. What can I say... I might have to order some more in different ohm values and make a custom load card with these resistors.

Thanks to Doak for the recommendation.

Doak- Just a copy/paste from this site: (http://mr-labs.com/theory.htm) Good info though.

Welcome Gene. :-)

Romaxim, in a nutshell:

The issue is that with LOMC, the inductance of the cartridge and the capacitance of the cable and input form a tank circuit resonant at ultrasonic or RF frequencies. The activity of the cartridge on the LP is enough to excite the tuned circuit that results.

If your preamp is stable with RFI then this is no worries. If the preamp is unstable (common with many SS phono preamps) the loading might be quite critical. Essentially the loading is reducing the 'Q' of the circuit, which in turn reduces the intensity of the RFI or ultrasonic noise that is generated. So a load is good practice in any event.