Review on 🎧 Sennheiser IE 80 S Black Adjustable Bass Earbud Headphones by Donald Phillips

They have a very flat sound signature (audiophile). They can be easily controlled by mobile phone with good output power. The key is that you have to use the equalizer on your phone. The soundstage is ok, definitely not too big but defined. Use your phone's equalizer to delve deeper into instrument or vocals while actively exploring what you've been missing from well-known songs. I recommend Bob Marley Legend as a good place to start. Some incredible guitar parts and backing vocals are worth exploring. The Kinks stereo albums (Lola, Muswell Hillbillies and more) are also very worthy. It's not really a plug and play headset that you would use at the gym. After a good warm-up period (30 hours), they become weaker and require less energy.