Originally developed by tungsol themselves, the 5687 w/ gold grids and bronze plates are legendary for sound reproduction. established in 1907, tungsol usa is a highly regarded tenured manufacturer, truly collectible and sought after for good reason.
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Introduced in 1954, the top sonic echelon 5814a are low noise, long life industrial grade high power 12au7 ecc82, at 175ma. + important life test pass! (key longetivity indicator) + an impeccable gas/leak/short check.
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The flat getter neck is unique to 1963, w/ incredibly accurate sound reproduction, more bass focus w/ better holographic precision.
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Vehicle Sound System Premium Sound. Main Harness Function Replace Original Vehicle Stereo Wiring Plug (Male Side). Car Audio & Video. Car Security & Safety. Compatible Premium Audio Systems N/A. Premium Harness Features.
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Crown jewel early panasonic! highly revered for their incredible sound reproduction, and often compared to mullard sonics. full mutual conductance gm test + an impeccable leak/short/gas check and our life test (key longetivity indicator).
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Full conductance test for mutual gm, tight balance pristine pair: 115/110 ~ 125/115 % gm (65 % min good). our high power output test applies up to 250v, more than many other testers, and simulates real circuits.
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Introduced in 1958, the high quality e182cc / 7119 is a special double-triode, ala higher mu/conductance top sonic echelon 5687. Sony NS999ES CD player, Opera Audio Consonance Cyber 800, Cyber 211, Zanden, LUX 300B amp,Kondo M1000.
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Premium quality top sonic echelon mullard alternatives.
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