(!!) (Best Single) 7N7 Sylvania branded Philco NOS parallel black plates 1940”s (7.5/7.9ma)

1 tube) 7N7 Sylvania branded Philco NOS parallel black plates 1940”s in white box

1 section) 7.5ma Gm=2400

1 section) 7.9ma Gm=2600

Good used Ma range 7-8ma

Good used Gm range 2200-2400

(7N7=Loktal 6SN7GT with superb sound – great option for DIY project instead of using 6SN7GT)

– Bottlehead Forum Foreplay III Conversion
– Singlepower Concerto 2007
– Singlepower MPX3
– Peter Millett 307A headphone amp
– Woo WA6 with adapter socket 6DE7 to 7N7
– Mystere ia21 preamp
– Eddie Current
– Masco MA-17

NOTE: ALL the 7N7 listed below have “”TRIANGULAR BLACK PLATES”” unless stated