Review on Monster Superstar S310 Portable Bluetooth Speakers - 20W True Wireless Stereo Pairing, Dynamic Sound, Waterproof Speaker, 24H Battery, Bluetooth 5.0 with Built-in Mic - Compatible with iPhone, Samsung by Chelsea Garcia

So for the price they are selling now I can't hate them too much but I will say I don't really like them. I bought 2 hoping the combined 36w and 4 drivers would get the job done. They are quite loud, but the low frequencies are very weak, even indoors, in the corner. They have decent headroom and respond well to EQ, but still. For a total price of eighty dollars, you can get an Anker Motion Boom with a MUCH bigger sound. On the other hand, they're damn strong. Pairing in stereo is painless and reliable. True stereo sound is quite comfortable. I generally sell my pair and buy anchors.