The one that cost 70 euro, is the old one (look at the product number). The one that cost 50 euro is in fact the updated one. The only difference is that it "removes the high-pass filters which were creating some issues with the output." 
- Lauszus
The one that cost 70 euro, is the old one (look at the product number). The one that cost 50 euro is in fact the updated one. The only difference is that it "removes the high-pass filters which were creating some issues with the output."