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Grundig TK 46. Germany (1962/63)Tracks: 4 Tracks StereoHeads: 3, 1 erase- 1 record- and 1 play back headTape speeds: 1 7/8 - 3 ¾ and 7 ½ ipsTubes: 2 x EF86, 2 x ECC81, ECC83, ELL80, EL95, EM84Output power: 2 x 3 wattsMax. recording time: