I've owned the Hana EL and currently own the SL. They have the same internal impedance (30 ohms) and a similar sound, but the SL is more resolving in the mids and highs. I load the SL with a Bob's Devices transformer that feeds a Line Magnetic tube phono preamp. I have two of the Bob's: with the Sky 20 and Sky 30 Cinemag transformers, so I can load at 10, 15, 20, and 30 to 1. Respectively, that's 470, 209, 118, and 52 ohms loading. In my system, there is a benefit to "loading down" the cartridge that goes beyond keeping RF away from the preamp (as atmosphere mentioned). There is a presence, a focus, a palpability, that comes with lower loading, that makes the sound more "real" in my system, and which has been written about by many, including the late great Art Dudley (RIP). But loading it down too much can also create a closed-in sound that loses some sparkle. So there's a trade-off (like almost everything in life). For the Hana SL, I most often load it with the 15:1 transformer, which is 209 ohms, which gives me the best in terms of openness and palpability. It sounds amazing in my system; better than the Denon 103R, Dynavector 10X5, and Dynavector 23R that I also own.