Line level to low level adjustments

[benjamin]

Hello everybody,
I am new here and this is my first project. I'm working on a diy spring reverb for some vocal recording stuff. Now I found a nice and easy circuit.


thx to Dödgenigt's Lab (www.dogenigt.com)

This circuit is made for Line level and that's my problem. Apparently my tascam portastudio effects output is a low level output, so the input gain stage should be set to low level in the circuit but I don't know how.
Does it makes problems if I keep the output gain stage 'line level', because the line input on my tascam is 'line level'.

Someone who could help me further? And my excuses for my Language (I speak dutch)