I use an older BAT VK 30 with a new Bryston 4B SST2. The 2 work really well together. I use to use the BAT with an older Bryston 4B. The Bat preamp utilizes 6 - 6922/6dj9/E88cc tubes. I am currently using Mullard E88cc tubes series 2493.A beautiful combo. You might even be able to find one of these preamps for a good deal or even a more updated version.