6J1 tube preamp vs. Topping DAC/Cosmos ADC loop

By PMA
Test taken 3 times
Test played 25 times

One of the files is a loop record of Topping D10s to E1DA Cosmos ADC. For the second file, a preamplifier based on 6J1 tube was inserted into the DAC/ADC loop. Can you tell a difference?

Tracklist  
Loading tracks...
Round 1 / 10
seconds
Track 1
Loading ... 0%
Track 2
Loading ... 0%
Track 3
Loading ... 0%
I think this is...