High frequency distortion from newer HiFi system - Need help troubleshooting

Hello all!
I have recently been experiencing distortion from higher frequencies that sound raspy, unclear and just plain bad. I can’t pinpoint if anything occurred leading up to starting to experience it.

I notice the raspiness in voices while watching tv and occasionally the hi freq sounds just sound unclear and terrible. I experience it both in stereo mode as well as surround (which would only add in the center channel).
I am running a NuPrime IDA-16 integrated with my Marantz 6012. My initial though is it’s coming from the amplifier; but I have no idea how or why. My first test is going to be to stop using the NuPrime and connect the speakers directly through the Marantz and see if I’m still experiencing it. My biggest concern is that there’s some sort of tweeter damage.

----------------------------Equipment details below----------------------------
Bowers & Wilkins 705 S2
Bowers & Wilkins HTM72 S2
Marantz 6012 Receiver
NuPrime IDA-16 Amplifier
Pro-ject Phono Box MM DC Phonograph Preamplifier
Pro-Ject - Debut Carbon Esprit SB turntable

Cabling
Record player is connected to the PreAmp via AudioQuest - Evergreen
Record player is Grounded to the PreAmp via AudioQuest - GroundGoody Saturn
PreAmp is connected to the Amp via AudioQuest - Evergreen
Speakers are connected to the Amp via 12 Gauge Speaker Wire - 99.9% Oxygen-Free Copper