Psvane ACME 2A3 rørForventet leveringstid 2 uger! In the Acme Series, we have a number of patents,and also write a new chapter in our audio vacuum tube field: The very first style of high power vacuum tube (Acme 845, 805, 211, etc.)with composite metal mesh screen pole structure in the world, graphite and metal wire mesh combined skillfully, make the sound very warm and transparent. Even at 600 temperature , the stress and thermal expansion coefficients of the two