Everything from Machelett went to China where power tubes are being manufactured under that same name. I recently price a 3CX1500A7 at 1/3rd the price of an Eimac version. K5SVC imports them and offers a one year unconditional warranty. On 6/6/2017 12:05 PM, Chris Hays wrote: > Their tube > division was Machlett labs, which was sold to Raytheon.