Rumors and Price gouging have created confusion about the GU74b/4CX800A.
Array Solutions (Acom USA) recently posted this clarification, to address RUMORS.http://www.arraysolutions.com/Products/acom.htmFact: The rumor of tubes not being available for these amplifiers is FALSE.
We have these tubes IN STOCK.
We have a good and continuing supply of "new old stock" (NOS) matched pairs, at very reasonable prices.
Currently a matched set of GU74B (4cx800) is $600 for the pair.Array Solutions (Acom USA) understands the GU74B (4CX800) supply situation as follows:
1. Svetlana still makes these tubes - but not on a regular basis.
2. New tubes are very expensive - > $1k per tube.
3. The date code on these tubes makes no difference.
4. If it is "new old stock" it's still new.
5. If you think about it, any tube becomes "new old stock".
6. Every tube supplied in an Acom amplifier is fully tested.
7. Every tube sold in an amplifier has a full new tube warranty - regardless of date code.
8. To get a decent per-tube price, Acom purchased a warehouse full of these tubes.
9. The Russian military still uses these tubes in their communication equipment.