[Crumhorn]

The XP-20 & XP-30 used cable(s) with DB-25 connectors to link their control/power supply chassis to the gain chassis(s). Revelation Audio Labs, among others, made replacement cables that some considered big improvements over the stock cables, due to better, shielded, connectors and the separation of the power & control wires into physically separate, shielded, cables. (That reunite at the connectors.) I purchased the RAL cables for my XP-30, & found the improvement modest but worthwhile.
When Pass (the company) designed the XP-22 & upcoming XP-32 they apparently learned from this, choosing a completely different connector, and, I believe, segregating & shielding the power & control wires from each other within the new cabling. I have not heard of anyone offering "improved" cables for these new models. The DB-25 connectors of the RAL & other 3rd party cables DO NOT fit the new connector sockets on the XP-22 & 32.

SOTA Cosmos TT (vacuum, Electronic Flywheel), SME V, Koetsu Rosewood Signature
Esoteric X-05 SACD player, Alesis ML-9600 mastering CD burner, Nakamichi 700 ZXE Cassette Deck
Pass Labs XP-15 phono stage
Pass Labs XP-30 & Hovland HP-100 preamps
Edge G8+ laser-biased monoblocks & Classé M-700 monoblocks
Rockport Atria & Infinity IRS Beta Speakers
Audience AU24 SX Phono cable, MIT Shotgun ICs & SCs
Revelation Audio Labs 'Passage' CryoSilver Reference DualConduit DB-25 umbilical cables for Pass XP-30
Shunyata Denali 6000T power conditioner, Shunyata Alpha NR, Delta NR, Viper Ztron, Venom HC & Harmonic Technology PCs
Audio Magic Ultimate SHD Bees Wax Fuse, Synergistic Research Blue & Black fuses, Hi-Fi Tuning fuses
Klaudio LP200 ultrasonic RCM