Recommendations for a jazz record which demonstrates vinyl superiority over digital

I have an entry-level Krell KSB-7B pre-amplifier with external power supply so I doubt that RFI is a problem there, but who knows?

@richardbrand The RFI is injected directly into the phono input by the tonearm cable. If the preamp has provision for 'cartridge loading' then yes, its susceptible.

@atmasphere 

OK, RFI via the tonearm cable makes sense!  The Krell has adjustable impedance from 5 to 47,000 Ohms, set with internal switches, for MC cartridges.  It has switchable gain for MM cartridges.  Its frequency range is 5 to 100,000 Hz within 1 dB and it is a fully balanced design with no capacitors in the signal path.

The manual talks about positioning of both the power supply and other components like CD players to minimise hum, which I have had to work on, starting with the deck.

The original cables in my SME 3009 tonearm (series 2 improved with fixed head shell) must be 40 years old, and the connectors at the cartridge end have become heavily oxidised.  One of the connectors came adrift when I changed cartridges and had to be soldered back.  Despite this, I am thrilled with the replay quality.

One day when I get more confident, I should seriously look at replacing the litz wiring but it looks like a very fiddly job.

Richard, I’m sure you’ve figured it out by now, but IC = InterConnect.

@lewm No, I was lost.  Could have been integrated circuit!

usatran, There you have me (when it comes to Blue Note).  True, the occasional pressing is terrific, but on average I find them to be a bit "muddy".  What makes BN collectible in my opinion (of course) is the major important jazz artists whose performances are captured on that label.  Some of the Japanese reissues are superior, purely with respect to sound quality, to the originals. Of course, this is a broad generalization and based on subjective opinion.