（中文在後）
The effects of getting the natural resonance point of a cartridge/arm combo within the optimal 8 to 12Hz range, are demonstrated here not only just to avoid tracking issues with warped records, etc., but also clearly lowers the IMD distortion. Human ears are very sensitive to IMDs and such an obvious change will definitely alter the sound quality significantly.

控制唱頭/唱臂的低頻共振點，不只是要避免唱片不平或低頻音染的問題。在這唱臂測試過的唱頭都顯示，加質量（這裡用黏土）將共振點降到10Hz的最理想值，可以將IMD失真顯著地改善。人耳對IMD極敏感，如此大的數值差，一定會造成明顯的聽感差異。