Yes, he provides very good info on his blogs. One of the amazing improvements in my system was through one of his recommendations, should have figured it out for myself but didn't. Raising the gain on the pre-amp and lowering the gain on the amp, providing your amp has a gain. This was one of the most significant improvements in lowering the noise floor and providing a darker background, literally lighting up the soundstage. The most notable effect overall was preservation of all detail at reduced listening levels.
So far as his QC is concerned, I have had not one issue with my Syrah in the almost 10 years I've owned it. Some have reported cold solder joints. I detected a few but they were quickly remedied. Wiring layout could be neater but overall, for the money, part quality is good and fit and finish was excellent. The chrome over nickle plating on the deck of both the pre and power supply is as new, no corroding or blemishes. Sound quality for a full function, high gain preamp at the price point all things considered exceeded my considerable expections and continue to do so, an exceptional value IMO.
