Hi Will,
The P75 might be lower noise with a lower impedance cart such as the 20XL or the XX-2. The 17D3 or other Karat carts have higher impedance and aren't as great a match with the P75. Might be worth auditioning with an XX-2 or XV-1S. But yeah, I'd be sure to audition. If you are laying down the cash for a high dollar Dyna cart, I'd imagine your dealer would be happy to let you audition the P75.
The P75 might be lower noise with a lower impedance cart such as the 20XL or the XX-2. The 17D3 or other Karat carts have higher impedance and aren't as great a match with the P75. Might be worth auditioning with an XX-2 or XV-1S. But yeah, I'd be sure to audition. If you are laying down the cash for a high dollar Dyna cart, I'd imagine your dealer would be happy to let you audition the P75.