Respected HiFi Dealer Upscale Audio claims the BHK Signature Preamplifier sounds best with TUNGSRAM PCC88 / 7DJ8 tubes. Some in the PS Audio community agree, others do not. Regardless, they have become extremely difficult to find.
Which non-stock tubes does PS Audio (and/or Bascom H. King ) recommend as a tube “upgrade” to the BHK Signature Preamplifier?
BTW, where is the Black Friday/Cyber Monday/Holiday Sale???