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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New Matched Quad (4) Electro-Harmonix 6550 Ceramic Vacuum Tubes
Electro-Harmonix
$276.02New Plate Current Matched Quad of Electro-Harmonix 6550 Ceramic Vacuum Tubes The 6550EH is one of the finest new production tubes for any amp using 6550 or KT88. The 6550EH offers the maximum power...$276.02 -
New Matched Octet (8) Shuguang Treasure KT88-Z Smoked Vacuum Tubes
Shuguang
$789.38New Plate Current Matched Octet of Shuguang Treasure KT88-Z Smoked Vacuum Tubes The KT88-Z features special carbon sprayed smoked glass which helps electrons flow more smoothly and reduces noise. As...$789.38 -
New Matched Sextet (6) Shuguang Treasure KT88-Z Smoked Vacuum Tubes
Shuguang
$595.07New Plate Current Matched Sextet of Shuguang Treasure KT88-Z Smoked Vacuum Tubes The KT88-Z features special carbon sprayed smoked glass which helps electrons flow more smoothly and reduces noise. As...$595.07 -
New Matched Quad (4) Shuguang Treasure KT88-Z Smoked Vacuum Tubes
Shuguang
$397.52New Plate Current Matched Quad of Shuguang Treasure KT88-Z Smoked Vacuum Tubes The KT88-Z features special carbon sprayed smoked glass which helps electrons flow more smoothly and reduces noise. As a...$397.52 -
New Matched Pair (2) Shuguang Treasure KT88-Z Smoked Vacuum Tubes
Shuguang
$199.05New Plate Current Matched Pair of Shuguang Treasure KT88-Z Smoked Vacuum Tubes The KT88-Z features special carbon sprayed smoked glass which helps electrons flow more smoothly and reduces noise. As a...$199.05 -
New Shuguang Treasure KT88-Z Smoked Vacuum Tube
Shuguang
$94.42New Plate Current Tested Shuguang Treasure KT88-Z Smoked Vacuum Tube The KT88-Z features special carbon sprayed smoked glass which helps electrons flow more smoothly and reduces noise. As a part of...$94.42 -
New Matched Pair (2) Telefunken KT88 Vacuum Tubes
Telefunken
$242.95New Factory Matched Pair of Telefunken KT88 Vacuum Tubes Introduced in 1956 by GEC, the KT88 was the higher-rated answer to the 6550. The Telefunken KT88 is an incredibly durable tube that can handle...$242.95 -
New Telefunken KT88 Vacuum Tube
Telefunken
$115.03New Factory Tested Telefunken KT88 Vacuum Tube Introduced in 1956 by GEC, the KT88 was the higher-rated answer to the 6550. The Telefunken KT88 is an incredibly durable tube that can handle taxing...$115.03 -
New Matched Sextet (6) Telefunken 6550 Vacuum Tubes
Telefunken
$641.41New Factory Matched Sextet of Telefunken 6550 Vacuum Tubes An excellent power tube Telefunken fit for classic amps such as Ampeg, capable of delivering a full 35-watt output. This is the ideal tube...$641.41 -
New Matched Quad (4) Telefunken 6550 Vacuum Tubes
Telefunken
$428.41New Factory Matched Quad of Telefunken 6550 Vacuum Tubes An excellent power tube Telefunken fit for classic amps such as Ampeg, capable of delivering a full 35-watt output. This is the ideal tube for...$428.41 -
New Matched Pair (2) Telefunken 6550 Vacuum Tubes
Telefunken
$214.49New Factory Matched Pair of Telefunken 6550 Vacuum Tubes An excellent power tube Telefunken fit for classic amps such as Ampeg, capable of delivering a full 35-watt output. This is the ideal tube for...$214.49 -
New Telefunken 6550 Vacuum Tube
Telefunken
$101.67New Factory Tested Telefunken 6550 Vacuum Tube An excellent power tube by Telefunken fit for classic amps such as Ampeg, capable of delivering a full 35-watt output. This is the ideal tube for warm...$101.67