I suspect the line input (TRS of the combo connector) will be padded down substantially*. You could try a XLR-F to TRS adapter. Alternatively, you could buy an inline pad.
Hosa HXS-003 Pro Balanced Interconnect - REAN XLR Female to 1/4-inch TRS Male - 3 foot
XLR3F-1/4" TRS Balanced Interconnect Cable with REAN Connectors - 3'www.sweetwater.com
Shure A15AS Switchable In-line Attenuator
In-line Attenuator, XLRF-XLRM, with 3-position Selector for 15, 20, or 25dB of Attenuationwww.sweetwater.com
[Edit] *Looks like the TRS is about 13 dB less sensitive.
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If this is a first generation 2i2 then this is a well known problem. For some reason Focusrite regularly bring out preamps that can't handle the sort of levels you'd expect to encounter in a normal recording environment. They fix it with the next model, only to break it a few models later. My Saffire Pro26io has the same issue - as do some of the Octopres from that era. I'm surprised that a company which is supposedly known for the quality of their preamps can make such a basic design error.I'm using a Beta 57A and Focusrite 2i2 recording into Reaper. I have the gain as low as possible on my DAW but it's still too high. Is moving the instrument further back the only solution?