Interesting article; thanks! I have an ~20 year old 383 and have been trying to figure out if it can be used on my new dSLR. I emailed Sunpak. Sally Wall at Sunpak said the trigger voltage is 6V and that the electronics never changed, so that irregardless of vintage the 383 should be OK to use. Have you found evidence to the contrary; i.e. 383 flashes with a high trigger voltage?