I see a good deal of action on the Tekton DI thread about Aric's amplifiers and makes me glad to see folks continue to support these small one-man operations. Just wanted to share some feedback after having used my Unlimited preamp for over a month or so and tubes have settled a bit. It sounds wonderful and seems to get better and better as it breaks in. The top end detail and midrange are incredibly engaging, especially on smaller bands with few instruments and vocals, like folk or jazz. I have already bought a set of tubes he recommended as upgrades including the rectifier, regulators, and signals, and will pop those in but want to first get used to the sound the way its now to have a good baseline. I'm also exchanging emails with Aric to see if I could make it even better by using better Audyn caps like the Plus or Pure Copper. He said he's experimenting this himself and will share the outcome. In some cases, upgrading the cap even within the brand may require using a different value to improve the sound. A nice benefit of point to point wiring that even could allow a novice like me to tinker. Anyway, its such a treat to be able to communicate so easily with someone who made your gear and get guidance on how to make it better. I have no doubt his amplifiers are just as good.