ECC812 is a really unknown type used in color televisions in France 1970's. Cifte were a French manufacture of valves Compagnie Industrielle Française des Tubes Electroniques aka "CIFTE". The valves were of very high quality due to excellent quality control. This is a 'killer replacement' for any ECC88 or 6922 or 6DJ8 according to Brent Jessee. Also the same inside as a Mullard CV2493. Matched on the Amplitrex AT1000 @ platinum+. Take a look at the build of this tube: 2 triodes with a large heavy screen between them. This means sturdy build, low microphonics and excellent seperation between triodes. Can be used for example in Audio Research amplifiers. Top tube. The feedback I receive from buyers is very very good. They love this tube! Buy if you can, this supply is going to dry up very soon.
These are early ECC88 Amperex Bugle Boy tubes made in Holland (Heerlen plant). A legendary member of the ECC88/6DJ8 family. Tubes have grey shield and huge 0-getter. Very healthy tubes with matching systems; see test results. These tubes are pulls from rarely used lab equipment. The acoustical properties of the Bugle Boy are legendary and widely known. On some tubes print is missing/fading/rubbing off.
Very rare and hard to find matched pairs of Philips Miniwatt 'Heerlen' factory made early 1960's in Holland. NOS, test very well and sound great. A very good upgrade over standard stock 6922, 6DJ8, 6N1P, 6N23P, E88CC. Matched in pairs on the Amplitrex AT1000. Price is for one pair of two tubes. Pairs are matched on plate current and emission. Both pairs test excellent balanced. With 'Heerlen' factory codes on the tubes.
These are the famous 1976 Voshkod Rocket tubes with their lovely glow. Matched pairs and quads available with 1% matched gain and balanced triodes. Excellent sounding tubes can replace 6922, 6DJ8 or ECC88 or ECC85. Price = for 1 tube.
Longlife high quality version of the 6N1P. Minimum 5000 hours usability. With OTK mark. Voshkod Rocket factory 05/85. Lovely clean pins. Used by Audio Research, Octave, LAMM. Replaces ECC88, 6DJ8, 6922. Price = for 1 tube. Please be aware the 6N1P-EV uses 600 mA glow instead of 300 mA for a ECC88.