Benchmark Dac1 USB vs. Dac1Pre


I have a Primaluna Dialogue two and I'm wondering if it would go better with a DAC1 USB or DAC1Pre. You can bypass the preamp on the Dialogue II. So, I guess I'm wondering which preamp will be better, the Dialogue's or the DAC1's. Any input is thoroughly appreciated. Thanks!
"better" means what? Better measuring or better sounding to you?

According to JA,
As an analog preamplifier, the DAC1 Pre is about as good as it gets, measurement-wise.