Preamp Tubes - RUBY TUBES are designed for rich sound, long lasting, outstanding performance. 12AX7AC5 List $18.65 Special! $12.23 ea. Qty 7025SS List $18.65 Special $12.23 ea. Qty Power Amplifier Tubes - RUBY TUBES are designed for rich sound, long lasting, outstanding performance. 6L6GCMSTR-MP Matched Pair  List $52.70 Special! $34.95 Qty 6L6GCMSTR-MQ (Matched 4-Pack)   List $105.35 Special! $59.94 Qty EL34BSTR-MP  Matched Pair   List $52.70 Special! $34.35 Qty EL34BSTR-MQ (Matched 4-Pack)   List $105.35 Special! $59.94 Qty EL84CZ - MP Matched Pair  List $37.75 Special! $22.95 Qty EL84CZ - MQ (Matched 4-Pack) List $74.65 Special! $44.95 Qty

* All Ruby Tubes are carefully tested and matched. Matching is done by both plate current and tranconductance. Each tube is marked with plate current and transconductance for that tube and a matched pair quartet will have tubes that tested the same.

RUBY TUBES come with a 6-month warranty, one of the best in the industry. We are so careful about selecting and testeing our tubes that we have no problem making this kind of offer. If one of our RUBY TUBES failes during the warranty period, RUBY TUBES will replace it at no charge.