Wild Improvements to the ZD3 DAC - SPARKOS SS3602 Op Amp UPGRADE

SPARKOS Website: https://sparkoslabs.com/discrete-op-amps/ Fosi Audio's Op Amp Install Video (Start at 10:02): https://www.youtube.com/watch?v=w7L_jZyh90Q Fosi Audio Op Amp Comparisons: Video 1: https://www.youtube.com/watch?v=BmPNOVZTStM Video 2: https://www.youtube.com/watch?v=jF3S1bVvsQA&t=718s Video 3: https://www.youtube.com/watch?v=h34XoPs5SRQ Video 4: https://www.youtube.com/watch?v=XTQz0b1mpmc&t=3s Virtual Hifi Channel: https://www.youtube.com/@UCZQMcQrIW9fCSCLuRNnD3Ww Chapters: 00:00 Intro 00:29 Fosi Audio Instillation Instructions 00:48 How To 01:48 Which One(s) to Upgrade? 02:19 Types of Op Amps 04:24 A/B Comparison? 05:36 Sound Transformation 06:03 ZD3 and Beyond 06:45 Affordable Luxury 07:03 Final Thoughts @sparkoslabs514 @fosiaudio @VirtualHiFi