Review on 🎧 EarStudio ES100 MK2 - 24bit Portable High-Resolution Bluetooth Receiver/USB DAC/Headphone Amp - LDAC, aptX HD, aptX, AAC (3.5mm Unbalanced & 2.5mm Balanced Output) by Tamara Palmer

First, I have pretty much any amp that's designed for travel and phone use. Soundblaster E3, E5, FiiO's new BTR1 or whatever, and even other Chinese brands. This blows everyone completely out of the water! The quality of the microphone is excellent. The app can adjust the equalizer and many other things and it has never been buggy for me. I can also use it as a USB DAC with my PC. At the moment I connected it to my computer via USB and AT THE SAME TIME I connected it to my phone via a strong Bluetooth connection. I can easily play on my PC with a good DAC without having to film everything and take calls. I can't tell you how long I've waited for this solution to work properly; for at least a decade. ES100 FINALLY makes it. This thing is a guard. I wish it was easier to update the firmware. Maybe through the app, but you'll have to manually force a download by connecting to a PC (not a Mac) instead. Music sounds punchy and intuitive like it's wired, but via Bluetooth. I bought a 2.5mm balanced cable to see if I noticed any differences. Either way, at $99, it's a steal. Should be $199 for the performance I've experienced so far. It fills a very large niche in this market and I look forward to purchasing any future versions they release! THE ONLY CONS: If your headphone wires have a mic in them, this amp won't work. Audio only cable. Packaging: leaves a lot to be desired. But, I thought, maybe that just means they put all their money into developing the PRODUCT and there's nothing left for the packaging. Of course, that could also mean that they were cheap in everything! However, listening to the device, we can say that it was not the latter. This product works well and is a gem in my opinion. Update 2018-7-4: It still works like new. This is my most used Bluetooth. I mostly combine it with my AAW W500 or Campfire Dorado. Firmware updates brought improvements and new features, including one-button environment detection; useful when you need to be aware of your surroundings. Still best in class. I also highly recommend getting one of these Cord Wrap Headphone Organizers - Cord Management - https://www.amazon.com/dp/B075K4KDY3/ref=cm_sw_r_cp_api_FRxpBbMBKP2Q8 and it makes it easy to use all day long . I would also like to add that I have never had any complaints about the quality of the phone calls or too much background noise.