4X150 Power Tetrodes (9) These 4X150 Power Triodes are manufactured by Eimac (5), and Amperex (4). They are rated at 250 watts. This item was part my Dad’s estate from many years ago. It is pre-owned, in good condition. Item NOT tested. Sold as is, no refunds. Curbside pickup is preferable. If requesting shipment a charge will be applied for packing, and shipping. I will need to price through Canada Post. The QTH is Braeside which is 30 minutes North/West of Ottawa. Cash preferable, or cheque. The price is $15 each or $110 for the lot.