I can help with cryogenic treatment of lamps. \nAs a result of cryogenic treatment, structural-phase transformations occur in the metal. The active resistance of the conductor is reduced to the lowest possible values, and the lamp equipment during audio testing demonstrates a qualitative improvement in the sound of musical works. The noise level of the audio system is noticeably reduced. Moreover, the cheaper the radio tube, the more pronounced this effect.\nComparative audio testing has shown that the sound, with all colors, tones, small details and dynamics, became clear and natural as a result of cryogenic treatment of radio tubes. Low and high tones were opened in a new way, filled with breadth and depth of sound.