I'd try the PS only if no cost.
PS Audio BHK Signature Preamplifier or Audio Research SP-9 Mk. III?
I’m currently considering trading in my (circa. 1993) Audio Research SP-9 Mk. III for a new PS Audio BHK Signature preamplifier. Any thoughts? Would it be an upgrade, lateral or just different? Should I just hold onto the SP-9 and upgrade the caps, etc.? Thanks in advance.