Recommend cartridge for pass labs preamp amp and Harbeth 40.2

I find my Kleos sounds best loaded between 90-175 ohms.  Is a lower loading available to you?  500 ohms would be too zippy and I could see you losing warmth.

What is the tonearm?

Michael, i think it's not correct to recommend a cartridge for certain speakers of even for certain phono stages. I'm sure Pass is great (i use his gear myself) and designed for a wide range of cartridges. 

Cartridge for tonearm make sense. But having different cartridges makes more sense if you're still searching for your type of sound in your system. 
Different type of cartridges MC or MM or MI ... Different design, diamond profiles, different cantilevers.... you never know what you prefer until you will try it by yourself. 

I am using a Townshend rock 7 turntable with a helius omega tonearm. The combo is frequently used together.

The system is great A- at worst...Just seeing if can keep transparency with a little more body...

I have also tried a ortofon a90 on this TT system and that also very good but perhaps even more revealing.


I have tried loading at 250 or 320 and while more full bodied it was on some recordings too much so....imho the harbeth prefers a fast transparent source...

Apparently kleos loading at higher load amount is frequently preferred here on audiogon and even j carr has endorsed it where suitable to listener's system

I thought perhaps the etna SL but pretty pricey 

Higher load is actually unload, try 47k Ohm for your MC, try Vishay Naked Foil Audio Resistors by Texas Components for direct replacement in your phono stage, these are the best audio resistors, will help you a lot with transparancy you're looking for. 

which Pass phono preamp are you using? 

I am using the Pass XP27....

It sounds excellent with Kleos but would be curious about little warmer  cart like Etna....

Dear @karmapolice  : Here good options for you and your system:


https://www.audiogon.com/listings/lis99edf-ortofon-anna-mc-as-new-cartridges

VdH Colibri low output version ( 0.22mv. ) are excellent performers. You can ask this next seller if can find out one for you, recomended:

https://www.audiogon.com/listings/lisa14fe-van-den-hul-crimson-black-phono-dartridge-cartridges


This manufacturer are excellent too and they manufacture all the Air Tigth cartridges and for other companies:

https://mysoniclab.com/#/ultraeminent/


Another Ortofon and is the Ti:

https://www.audiogon.com/listings/lisa0380-ortofon-winfeld-ti-mc-new-cartridges


Regards and enjoy the MUSIC NOT DISTORTIONS,
R.

Thanks for the ideas Raul....dealer friend who does not sell cartridges also recommended a koetsu signature rosewood ...intriguing but maybe swings pendulum too far into warmth region

I noticed today that if I adjust loading on phono per record 250ohm versus 500 depending on mastering and sound of particular album can nail it right