I have actually paired the D-1 with the following amps and they all sounded great:
- Class D Audio GanFet 6.5 amp ($995)
- Schiit Wotan (Class AB $2000)
- CODA #16 (mostly Class A, $16500)
- CODA #11 (mostly Class A, $5000 30 years ago)
My current and final amp for the Livingroom is the CODA #11. However, I would love to try the D-1 with the Benchmark AHB2 amp just to hear that combo. This amp is actually very smooth on top though it can be flat. The D-1 could match nicely with the AHB2. I say this because the GanFet amp (I still own) was very good with the D-1.
I think the reviewer tried a few amps with the D-1.

