Lastly, it’s my opinion and experience that the best Benchmark products are the LA4/HPA4 preamps. Their DAC3 is rather antiquated these days (and ugly AF) and the AHB2, while a good clean performer, doesn’t offer the dynamic grunt that many speakers (especially high end speakers) thrive on.
This is 100% my opinion too. I have owned the AHB2 about 5x and all 3 versions of the DACs. I still have the DAC3B since it serves a single purpose well (used with a tube headphone amp). The LA4/HPA4 are amazing gear. I no longer have any AHB2 since it was not the most dynamic with my Yamaha NS5000 or Magnepan LRS+. A CODA #16 and a Sanders Magtech overall were a better match.
A great pairing is Benchmark preamps with CODA amps. Similar to the Parasound A21 amp described above. I had the LA4 and the A21+ and that was good, so I eventually ended up with the CODA #16 and the LA4.
In fact, I have tried about 12 amps with the LA4, and all sounded good with the LA4. Cannot say the same level of success with other preamps I owned, such as the CODA 07x, Topping pre90, Schitt Mjolnir V3, Schitt Freya+, Bryston BP20, BAT VK-42SE.