Sennheiser HD660S vs HD600 Comparison

My take on the Sennheiser HD660s when compared to the HD600. Testing done through and Aune X7S through SE for direct comparison. Rechat Silent's Gram here: https://www.instagram.com/silentss/?hl=en ** Sennheiser HD600 ** -Amazon: https://amzn.to/2W8K2WH ** Sennheiser HD660s ** -Amazon: https://amzn.to/2GMz9EJ ** I am an Amazon Associate. Clicking on these links and buying from them helps the channel out. Thanks! ** ---- Recommended Products: ---- ** Sennheiser HD800S ** -Amazon: https://amzn.to/2BjW7iZ ** Hifiman HE-4XX ** -Massdrop: https://www.massdrop.com/buy/massdrop-x-hifiman-he4xx-planar-magnetic-headphones ** Audeze LCD-2C ** -Amazon: https://amzn.to/2RI657Q ** Sennheiser HD650/6XX ** -650 through Amazon: https://amzn.to/2REy74d -6XX through Massdrop: https://www.massdrop.com/buy/massdrop-sennheiser-hd6xx ** Sennheiser HD58X Jubilee ** -Massdrop: https://www.massdrop.com/buy/massdrop-x-sennheiser-hd-58x-jubilee-headphones ** Koss Porta Pro ** -w/mic through Amazon: https://amzn.to/2AW9eXf -X through Massdrop: https://www.massdrop.com/buy/massdrop-x-koss-porta-pro-x-headphones ** Koss KPH-30i ** -Amazon: https://amzn.to/2AW9hlT ** AKG K7XX ** -Massdrop: https://www.massdrop.com/buy/akg-k7xx-massdrop-first-edition-headphones