Specializing in vintage tubes such as types 6550, KT88, 6L6, 6V6, EL34, 6CA7, EL84, 6BQ5, 8417, 7027A, 300B, 350B, 2A3, 45, 211, 845, 12AX7, ECC83, 12AT7, ECC81, 12AU7, ECC82, 6SN7, 6SL7, 6DJ8, ECC88, GZ34, 5AR4, 5Y3 by brands such as RCA, Western Electric, GE, Tung Sol, Telefunken, Mullard, Amperex