This is an original Zoe tube preamp. I am the original owner and it has been well cared for. It has 6H30 tubes with low number of hours of use. This unit is a tube roller's dream and can take any 6.3 or 12.6 tube that has
the pinnout of a 12AX7 or similar tube. I have found the 6H30's to sound particularly good in the Zoe. The included original remote never worked right but it turns out that a Logitech 300 remote can be easily programmed for the Zoe and controls the volume very nicely. Reviews and information about the Zoe can
be found by Googling it on the web. The Zoe is a very musical and revealing unit!