The TDA 1541 chip is rated one of the best sounding of the discreet R2R chipsThe TDA1541 is not discrete.
This is the "Chip" TDA1541 (all microscopic resistors are inside it.)
https://img.canuckaudiomart.com/uploads/large/2649100-brand-new-philips-tda-1541-s1-crown-dac-chip.j...
This is the "Discrete" R2R resistor Ladder, "no chip", the hundreds of those resistor (circled in red) are separate and discrete.
https://ibb.co/72znmhd
Cheers George