High resolution Generation 1 cascade tubes. Each tube is really 3 x Gen.1 tubes coupled in series. Each tube has a 50x light gain which makes the system 50x50x50 or a whopping 125,000 x light gain. When installed into homemade N.V. units they are almost comparable to modern Gen. 2 tubes and OMNI 3 Gen. 3 tubes.
PRICE ONLY £80 + £5 shipping worldwide - BUY HERE