1000A - 9999Z
There are many great four digit tubes such as the 7025, 6550, 5654 and 7868. These tubes tend to be high-end versions of standard tubes or variants of standard tubes though there are plenty that just exist on their own.
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On Sale
New Matched Quad (4) Sovtek 6550WE Vacuum Tubes
Sovtek
Now: $248.42Was: $276.02New Plate Current Matched Quad of Sovtek 6550WE Vacuum Tubes The Sovtek 6550WE features a higher transconductance, higher output power, and an excellent sound performance. It will bring out that excellent range for any guitar amp. Will work in...Now: $248.42Was: $276.02 -
On Sale
New Matched Pair (2) Sovtek 6550WE Vacuum Tubes
Sovtek
Now: $124.47Was: $138.30New Plate Current Matched Pair of Sovtek 6550WE Vacuum Tubes The Sovtek 6550WE features a higher transconductance, higher output power, and an excellent sound performance. It will bring out that excellent range for any guitar amp. Will work in...Now: $124.47Was: $138.30 -
On Sale
New Sovtek 6550WE Vacuum Tube
Sovtek
Now: $59.31Was: $65.90New Plate Current Tested Sovtek 6550WE Vacuum Tube The Sovtek 6550WE features a higher transconductance, higher output power, and an excellent sound performance. It will bring out that excellent range for any guitar amp. Will work in place...Now: $59.31Was: $65.90