Tube Amp Doctor 6V6GT Summer-Of-69 Special

Here you will find the most important information about the matching of our tubes When does a tube become a Premium Selected tube? Power tubes All power tubes labeled Premium Selected have passed the following tests: - Plate Current (PC) and Amplification (TC) - Low Noise Test ...Here you will find the most important information about the matching of our tubes When does a tube become a Premium Selected tube? Power tubes All power tubes labeled Premium Selected have passed the following tests: - Plate Current (PC) and Amplification (TC) - Low Noise Test - Microphonic Test - Sonic Tests - Shock Tests - Listening Tests - Shorts & Leakage Tests Premium RT-Matching of Power Tubes Our Premium Matching is an exact matching of power tubes with identical Plate Current (PC) and Transconductance (TC). Due to the very high selection requirements, this article is temporarily only available to a limited extent! This matching method includes our Balance-Selection.