True, however I went with the 20 amp plug and wired the room with 4 20 amp circuits @110 volts and 1 30amp at 220 (for the tape truck). Looks like I'll need another 220 for the second TU45 pretty soon. Now onto the interesting thing: After a year of waiting, SETASI finally contacted me about the RP08 drives they sell. Bad news is that they do not support 18 bit transfers... However they DO have a device that basically emulates 8 RS04's using memory. The interesting thought is that it does this by plugging directly into the RH11, in place of the three M5903 interface boards. Now 8mb of storage isn't very interesting, but say 512mb of storage (what, one DIMM?) would be *quite* interesting. Anyone got a manual describing in detal how the RH11 works? This might be the trick to get around the hellish MASSBUS timing issues. Just replace the whole MASSBUS with a small CPU and a big pot of memory... It has been done. And I for one would be quite happy to replace my disk farm of 2 RM03's and 2 RM80's with a single Macintosh DIMM chip. Chris