Allow me to ressurect this thread. As a Cabernet owner I am slowly but surely expanding my tube inventory. I have the supplied tj300, great sounding, warm mids. I am currently listening with eml 45 solid plates. Deeper bass, less warm, but more detailed Mid's and High's. Next I am intrigued by the reputation of the Western Electric 300b's. But I have also read interesting talk about the Sophia 300b's. Anyone with any thought's, insight's or experience would be greatly apprecieated!