The tonearm on the pro-ject the classic has an effective mass of 13.5 grams, so medium mass. It is not too light for the hana cartridge. I run the EL version on the classic and it sounds great. I do agree, the hardware that comes with the hana’s (aluminum bolts) should be replaced for stainless steel allen head bolts, a bit heavier. The hana only weighs 5 grams. Also, if you read the manual or look at pro-ject’s website for the classic...they do recommend a different counterweight for very light cartridges. However, the counterweight that comes with the table is marginally within acceptable limits for the cartridge. The arm can easily be balanced as is. Also, the hana’s seemingly prefer to be run ass down, from my experience. The cartridge just sounds sweeter this way. Lastly, I would not load the cartridge below 400 ohms. Follow the recommendation for 400 or higher. I load mine anywhere from 400 to 500 ohms which it seems to like. Sometimes sibilance is in the recording itself, dependent on the pressing. I’ve proved this, as I own 5 turntables and the recordings effected with sibilance can be heard on all 5 turntables and cartridge combos. Not to say that both VTF/VTA as well as proper alignment can’t reduce it. It will take experimentation to find out. By the way, the pro-jec the classic is an outstanding turntable for the money. I also own the SB version with the built in speed box. Fremer likes it too.
This is from the Galen Carol audio website:
A tonearm whose effective mass is rated at 10 grams or below is considered low mass (e.g. early SME’s, Grace 747 etc.). A tonearm whose effective mass is rated between 11 and 25 grams is considered moderate mass (e.g. SME 309, IV, IV-Vi, V, Triplanar, Graham). Arms above 25 grams of mass are high mass in nature (Eminent Technology, Dynavector).