I recently purchased Alpha Digital BH-530-B Bluetooth Headphone with Soft Fit Ear Covers and Built-In Microphone and they sound “ok” but have a muffled sound. Is there anything I can do to correct it? No User’s Guide came with them and no website. They’re probably junk. Any advice is appreciated.
There’s not really anything you can do for those or any headphones since an equalizer is device specific unless there’s an app for the headphones. You’re better off getting a decent pair for like 30-40 bucks [https://www.amazon.com/Philips-Headphone-Resolution-Audio-Headphones/dp/B07ZWNZKZD/ref=sr_1_20?keywords=headphones&qid=1579733644&sr=8-20]
You can use an equalizer app on your phone or PC to make them sound better, but I doubt you’ll get them to sound crisp and have beefy bass.
Let me know if you have any further questions