Well, I just found bluetooth speakers that are made by Presonus for producing. This one: https://www.amazon.com/gp/product/B07Z6P19Y9/ref=ox_sc_act_title_1?smid=ATVPDKIKX0DER&psc=1
it just depends on what you need it for. i have some simple PreSonus monitors for home use. $99. they have Bluetooth as well. im not throwing any parties with these but they work for me.
PreSonus Eris E3.5 BT-3.5" Near Field Studio Monitors with Bluetooth https://www.amazon.com/dp/B07Z6P19Y9/ref=cm_sw_r_apan_i_H95J1YPY04RFSF3TDVHQ?_encoding=UTF8&psc=1
don't think I've ever seen Bluetooth speakers or most headphones without some sort of EQ or custom DSP altering the sound profile.
Thank you for your response btw. These are bluetooth monitors made by presonus. I'm wondering if they're an exception since they're made for studio one. Just found them today https://www.amazon.com/gp/product/B07Z6P19Y9/ref=ox\_sc\_act\_title\_1?smid=ATVPDKIKX0DER&psc=1