I asked this question awhile back and I am surprised no one knew a answer. I have a Sonar FS-3023 that has a uncanny resemblance to the SX-117 and HT-44's. The cabinet structure and color are identical! The chassis is the same type and it uses many 6EA8's like the HT-44 does. Was there some kind of secret relationship that Hali had with Sonar?