sfizz output level too low?

[cvde]

I noticed that the output level of a sample played via sfizz is ~3dB lower compared to playing the sample directly. In sforzando it's exactly the same. I wonder if I'm missing something in my sfz file or if this behavior is intentional.

Here is a (minimal) sfz file:

<control>
set_cc7=127
<global>
loop_mode=one_shot
<region> sample=sample.wav key=49

The attached sample.wav file peaks at -1dB when played directly. It peaks at -4dB when played via sfizz.

OutputLevelTest.zip