P.S. Audio B.H.K. 300 Mono Amps, B.H.K. Preamplifiers, PS Audio Dac

I too use the PSA BHK Pre and Direct Stream DAC but amplification is Coincident Frankie-II SET monoblocks.  Tried multiple other pre/dac combinations and just dac direct but seam to always come back to the BHK + Direct Stream.  Some tube rolling is necessary to dial in personal preferences but that is part of the beauty of the design. 

@tinear123

They are truly a perfect match and never mind the ease of tuning the sound with a tube change. I have tried mix matching dac amplifiers tube, Solid State Class A, A/B, Class D and it was guessing game at my expense. Bascom H. King nailed it with his Hybrid Solid State Tube design.

I find that all components from the same manufacturer brings out the best from each

 I have experimented with various top end brands components some that worked well and some that did not no matter how much money I through at it, no question that component system matching by manufacture makes things perform optimally from head to toe. Now on the other hand I have to admit that there is huge magic when you blend tube and solid state together whether it be a class A,AB, or D amp with a Tube Preamp or S/S Preamp Dac with a tube Amp. Hence the reason I doubled down with P.S. Audio BHK Hybrid Amp and Preamp along with S/S DirectStream Dac. It has it all no guess work or money poorly spent in a guess tweaked by Bascom H. King Designer Tuner for 90K systems and above for Constellation Audio along with many other great companies and now for himself and P.S. Audio with his Signature Line Amps. and Pre.

Great Product Great Price and a Steal on the used market while the renaming dealers deplete there current inventory subject to P.S. Audio's decision to go direct no more dealers model.

Hope this helps :)

Been playing with the PS Audio DirectStream Dac direct to the BHK 300 Monos. I swapped out the factory 12AU7 tubes in the BHK 300's to the Tungsram PCC88 and let everything settle in before I really sat down to listen and boy what a surprise. The soundstage nearly tripled in size with detail in the mids popping with sparkle and some tingle in the highs a departure from the stock tubes intament warm sound and smaller but just right soundstage.  So for those who want to bypass a preamp and go direct you can definitely do it and tweak your desired sound preferences with a quick swap of the tubes. Best bang for the buck you ever have without having to add a preamp to the chain. Although it's nice I still prefer the magic the the preamplifier brings to the table.