A renown German pro-audio website Amazona reviews our 2DI4 Mk.II DI box !
The concluding sentence (translated from German):
“Bass players on a tight budget should look elsewhere, but for those who can afford it, this is probably the best DI box on the market.”
You can read the review here or on the Amazona website. Use the website link if you would also like to hear their test audio files.