![Dive deeper into legendary sound. Let's meet the HD 660S2 | Headphone Reviews and Discussion - Head-Fi.org Dive deeper into legendary sound. Let's meet the HD 660S2 | Headphone Reviews and Discussion - Head-Fi.org](https://cdn.head-fi.org/a/11980301.jpg)
Dive deeper into legendary sound. Let's meet the HD 660S2 | Headphone Reviews and Discussion - Head-Fi.org
![Sennheiser HD 660s: I get PLENTY of volume out of my iPhone 12 mini... why do people still say I need an amp/dac? Crinacle says the lightning adapter is "fine". : r/headphones Sennheiser HD 660s: I get PLENTY of volume out of my iPhone 12 mini... why do people still say I need an amp/dac? Crinacle says the lightning adapter is "fine". : r/headphones](https://external-preview.redd.it/szli9PWoTabpY-QuBiqQ9RD_W-NVxQC5kDXAhb8gs-8.jpg?auto=webp&s=1befda3e0b4df13f11c3e91618b2921f36b98881)
Sennheiser HD 660s: I get PLENTY of volume out of my iPhone 12 mini... why do people still say I need an amp/dac? Crinacle says the lightning adapter is "fine". : r/headphones
![Amazon.com: Apogee GROOVE - Portable USB Headphone Amp and DAC, Bus Powered for Mac and PC, Made in USA : Apogee: Electronics Amazon.com: Apogee GROOVE - Portable USB Headphone Amp and DAC, Bus Powered for Mac and PC, Made in USA : Apogee: Electronics](https://m.media-amazon.com/images/I/61AbFgl5u7L.jpg)
Amazon.com: Apogee GROOVE - Portable USB Headphone Amp and DAC, Bus Powered for Mac and PC, Made in USA : Apogee: Electronics
![Dive deeper into legendary sound. Let's meet the HD 660S2 | Headphone Reviews and Discussion - Head-Fi.org Dive deeper into legendary sound. Let's meet the HD 660S2 | Headphone Reviews and Discussion - Head-Fi.org](https://i.ytimg.com/vi/xakDFhBxQI0/maxresdefault.jpg)
Dive deeper into legendary sound. Let's meet the HD 660S2 | Headphone Reviews and Discussion - Head-Fi.org
![I love Crin but just a quick reminder that subjectivity exists and his word isn't gospel (HD660s) : r/headphones I love Crin but just a quick reminder that subjectivity exists and his word isn't gospel (HD660s) : r/headphones](https://i.redd.it/fr2eul3ls3t81.jpg)