EarStudio

Buy this if you truly care about audio fidelity! Chances are your earbuds, headphones or speakers aren’t delivering the tonal balance that you prefer and this app includes a 10 band EQ and a bunch of other settings that make you able to get the best out of your gear. Don’t believe those telling you that an EQ is bad for good audio. Check the Fletcher-Monson curve and why using EQ makes a heck of a sense. Check how your hearing deteriorates as you ages and tweaking the treble can rejuvenate your listening experience. Or just check how the majority of audio gear is with flawed frequency response. And besides, you might have your personal preference, perhaps you need a bit extra deep bass for your EDM listening...and so on. Professionals use EQ all the time and consumers are told by some companies its bad to use...no, use this app and tweak the sound and you will realize what you have been missing.

Dear Developers, The app that you’ve made for the EarStudio is simply amazing. It gives you total control over the device and a ton of features that helps you tweak how you want your music to sound like in your ear. I only have one recommendation which is to provide a widget as a volume slider for the device. Sometimes I have the EarStudio in my backpack or pockets and I don’t want to lower the iPhone’s volume since it will lower the quality of music. A widget for the pull down menu would be very convenient in turning the device’s volume up or down without needing to enter the app each time I connect my headphones. Thank you, Abdulaziz.

I’ve had no way up until now to run my music off of my Bandcamp app through an equalizer on my iPhone, but this app coupled with the EarStudio es-100 has finally solved this problem. I also love the ambient feature. I gave my Fios BTR3 to my son, and will use the es-100 from this point onward. Great product.

▫️10-band equalizer with preamp level (a KEY feature) ▫️0.5 dB incremental analog volume level ▫️Amplifier configuration (2x current or voltage) ▫️DAC oversampling ▫️Bluetooth codec options and buffer length ▫️Proprietary jitter correction ▫️L/R crossfeed (decreases stereo separation to partially emulate a speaker setup) ▫️Ambient sound (mixes microphone input) And more...and adding features with frequent updates. Wishlist: more manual presets. Many of us have more than 4 earphone configurations. The Radsone EarStudio ES100 hardware is far superior to any mobile Apple DAC/amp. You can credibly drive 300 Ohm Sennheiser cans with it.

The latest update as of this date fixed that annoying volume bug...this app now plays nice with the es100 and makes it well worth its costs!