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Output transformers for DACs

Interesting thread, but loathe to read 980 posts to answer a few simple questions:
1. Using tda1541, which R value best for IV? Do you sell those?
2. Which transformers are recommended? Could they be used for MC SUT as well?
3. Is there a schematic for a buffer after the transformer? Is the buffer needed?
 
1. Lower than 20R. Use AN niobium or tantalum for best SQ. Zfoils and wirewound ones are good too.
2. D60 SUT trafos with turns ratio of 1:16 or higher. Yes, possible to use as MC SUTs.
3. Yes, it was here in this thread (simplest class A, Single Ended, <1 gain, buffer based on a matched 170/74 pairs without any in series capacitors or resistors). Buffer is a mandatory thing if you want a SOTA sound.