At an affordable price (I have one ;) and it works well :) there is also this: https://www.dv247.com/en_GB/GBP/Koma-Elektronik-Attenuator-Cable/art-SYN0004623-000
'On ne devrait jamais quitter Montauban' (Fernand Naudin).
https://soundcloud.com/petrus-major/tracks