The Sonic Frontiers were built like a tank. Unless you drop one on the floor from a significant height, you should only need to replace the tubes once in a while. Tubes can be purchased from many reputable dealers.
The new company is highly accessible both by telephone and email. I have communicated with them on two occassions.
Perhaps the original founders of Sonic Frontiers were too interested in producing the finest equipment and did not consider the cost of producing such equipment. It is hard to make a profit in the competitive world of electronics these days, particularly if you are producing tube equipment.
