As reported in Stereophile's review, the 834p has very high gain of 49db in MM, 65db in MC. This in combination with a high-output cartridge like the BP, might be overloading your integrated. You could try cutting gain with a voltage divider comprised of two resistors per channel at the RCA connector.
I'm assuming that the EAR phono stage has been connected to a standard line-level input on the integrated & not to the phono input.
I'm assuming that the EAR phono stage has been connected to a standard line-level input on the integrated & not to the phono input.