@eculcea kindly sent me the tantalum resistors discussed in post #712. After 20 hour burn-in, I think they sound excellent. Their best quality is openness of sound. They initially lacked the clarity of the TX2575, but now after burn-in that has improved significantly. I can recommend these as an inexpensive and readily available alternative to the TX2575.
Part numbers: Vishay PTN1206E1000BST1 100 ohm 1206 size, Stackpole RTAN1206BKE100R 100 ohm 1206, Yageo NT1206BRD07100RL 100 ohm 1206.
The SMD mounting PCB is from Ali.
Part numbers: Vishay PTN1206E1000BST1 100 ohm 1206 size, Stackpole RTAN1206BKE100R 100 ohm 1206, Yageo NT1206BRD07100RL 100 ohm 1206.
The SMD mounting PCB is from Ali.
Hardware: RPi Zero W | Allo Kali | ProtoDAC TDA1387 X8 | PGA2311 | Icepower 500ASP | Harbeth SHL5
Software: Moode 8.3.3
Source: Win 10 NAS
Software: Moode 8.3.3
Source: Win 10 NAS