6550 tube is an American power tube used in many audio and guitar amps. There are many current production 6550 tubes on the market today. Our review helps you know what each 6550 is like so you can make the best selection for your amp.

VA Directive 6550 June 3, 2019 2 PRE-PROCUREMENT ASSESSMENT AND IMPLEMENTATION FOR MEDICAL DEVICES/SYSTEMS 1. PURPOSE. This Directive establishes the technical Pre-Procurement Assessment (PPA) and Implementation requirements for medical devices and medical systems that

VA DIRECTIVE 6550 Provide a comprehensive list of all TCP and UDP ports that are required for operation: Note: If more space is needed, please attach the comprehensive list of ports required for operation to this document. Attach a network diagram showing all communication requirements. How many fixed IP addresses does the device require?

VA DIRECTIVE 6550 Appendix A – To be completed for all procurements of network-connected medical devices and non-network-connected medical devices that store sensitive information. For client/server systems, a separate 6550 Appendix A is required for each client and the

We have a large selection of 6550 vacuum tubes in stock. Here you'll find tubes by TungSol , Sovtek , Electro Harmonix , Winged "C"/SED, JJ Electronic , and Svetlana . Many of the 6550 vacuum tubes listed below have tube reviews submitted by our customers.

TubeDepot carries a selection of 6550 / KT88 / KT90 Power Vacuum Tubes. New & NOS power tubes from Mullard, Tung-Sol, Telefunken, Sino, GE, Telefunken & more!

The General Electric 6550 is world renowned as one of the best sounding power tubes ever made. Ideal for vintage guitar amps and ANY amplifier that takes 6550 valves in the power tube position. Let your amp shine... buy today!

Buy precision-matched 6550 tube sets. We have pairs, quads, and sextets of 6550 tubes in stock and ready to ship. Our carefully tested and selected 6550 tubes will help you get the most out of your amp.

Electro-Harmonix 6550 EH vacuum tube is a high-power superior Octal beam tetrode perfect for amplifiers using 6550 or KT88. These tubes are made to perform in the toughest environment of high-powered amps like Ampeg SVT.

Jun 27, 2016 · In this article, the 6550 is used in a clean, sweet-sounding, single-ended design. The amplifier has very few parts, is easy to build and repair, and the cost of the project is nominal when you consider the kind of sound that is produced.