Rocket Logo 6H23 - This tube sounds wonderful. Great extension, nice mids. Getting preamp grade ones out of a batch is more difficult, so at this time we only have stocks that are Drive Grade; which means they're not really suitable for use in preamps. Hopefully we can find some more tubes that test Gold or Platinum, because they really are a bitchin' sounding tube...
Driver grade - Lowest noise but not the lowest in microphony. Triode balance will be similar to Gold grade.
This grade is only suitable for use in the driver stage of an amplifier, or the output/buffer stage of a DAC or CD Player.
If you have a preamp or phonostage, this tube will not be suitable for use in those circuits.
Price includes matching in any quantity you need at no extra charge.
Vacuum tubes are warranted for 90 days against defects, except in cases of abuse, and replaced with like-item only.
Exceptions to our warranty policy are as follows:
Upscale Audio is not liable for any damage or injury caused by the improper use of its tubes or the use of an incorrect/incompatible tube type. If you are unsure of what tube or tubes your equipment uses, consult the manufacturer before making a purchase. Using an incompatible tube type may cause severe damage to your equipment and will void your tube's warranty.
Vacuum tubes are electronic parts and are not refundable under any circumstances.