Hi Jan

several details are important here:

-how did you connect the Eclipse to the FX Loop? Type of sockets and cables.

-is the fx loop a +4 dB line level or -10/-20dB instrument level type?

-is the fx loop parallel or serial?

-which preset is giving you the problem? You must specify name and number.

-is there anything else connected to this amp, other than your guitar and Eclipse?

thank you

I