Take it from a 30 year highend audio veteran and electrical engineer: the best overall sound from the Koetsu Black or Redwood is gained from the standard 47,000 ohms (no additional)loading. Set it there and leave it there!!
Many other highend cartridges I've owned (Troika, Dynavectors, etc) do benefit from loading under 470 ohms, but not the Koetsus. Agree that 2.2gm tracking is about optimal. VTA is critical and can be dialed in by ear. Overall compromise (each record's optimum is slightly different) usually ends up with the back of the tonearm about 1 mm down from horizontal.
Keep your original Koetsus. No other cartridge captures the involvement or essence of live music quite the same.
Many other highend cartridges I've owned (Troika, Dynavectors, etc) do benefit from loading under 470 ohms, but not the Koetsus. Agree that 2.2gm tracking is about optimal. VTA is critical and can be dialed in by ear. Overall compromise (each record's optimum is slightly different) usually ends up with the back of the tonearm about 1 mm down from horizontal.
Keep your original Koetsus. No other cartridge captures the involvement or essence of live music quite the same.