Has a nice talk with Doug yesterday about the ACM V3. I finally was able to get him to email me a description of the mod. I have updated the first page with it but here it is again.
The Grace V3 is undoubtedly one of the great portable designs of all time. From time to time over many years I worked on improving the V3s sound only to find I could make it sound different but not better. Recent chip designs have finally changed that. The ACM V3 MOD is designed based on my signature "sound" ....> an open, detailed and accurate 3D soundstage that is free of audible distortions. In the audio design arts it is all about how components work together to achieve a realistic soundstage. A good ear can detect the sonic attributes of various components and with time, learn how they integrate to achieve the elusive goal of natural sound. The ACM V3 is total free of the brittle artifacts and audible High Frequency distortions that never appear in marketing specs but assault the ears of music lovers in many designs and after market upgrades. I rebuild the analog signal path of the V3s A/D PCB with new capacitors and chips selected by ear to enhance its impressive performance for those who love the sound of being there !
Trust YOUR Ears
Nothing has changed as of yet schedule wise for him doing this mod. So hang in there.