BTW this is from the Stereophile review and bench tests of the Vivaldi, from the reviewer Michael Fremer who owns the darTZeel NHB-18ns preamplifier. and darTZeel NHB 458 monoblocks. Looks like he had no issues going direct to the monoblock amps, instead of the $23k NHB-18ns pre.
I ran the Vivaldi’s directly into my darTZeel amplifiers for the last week of the review auditioning, and though couldn’t play any vinyl that week, I didn’t miss it.Cheers George
Depending on your needs, you might be able to get away with just the DAC or the DAC-and-clock combo, which, directly driving my amplifiers, produced high-resolution digital sound that I found easy to warm up to.