Does the webplayer decompress the FLAC?

I use Deezer at work through the webplayer, and currently I connect the laptop to a Bluetooth speaker. Bluetooth limits the bitrate so I want to use my laptop's headphone jack and connect the laptop to the speaker using an aux cable. However I'm not sure how that works for decoding and whether I need a DAC and/or an amp. When I play Deezer through the webplayer does it decompresses the FLAC? And so if I run an aux cable directly between laptop and speaker am I getting the full 1411 kpbs to the speaker?