6688=E180F=6J9P Pentode
6j9 tube equivalent in the Douk Audio Nobsound 6J9 replacements tubes excellent for headphone amplifier and offer a dramatic upgrade in sound quality and dynamic range over the stock 6ZH9P tube.
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All prices are per tube
Amperex 6688 E180F Holland
$29.99Holland Made Philips SQ E180F 6688 tubes. Triple Mica gold pin construction! 6688=E180F 10,000 hour 9 pin broadband pentode. Recommended for: Nobsound- here is a link to a video made by one of our customers after he received his matched pair for his Nobsound headphone amp: https://www.facebook.com/scott.lowell.5/videos/10208623852628597/ Supratek Chenin Cortese preamp Yamamoto 06-3 2010 $29.99 per tube
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All prices are per tube
Amperex 6688 E180F USA
$19.99USA Made Philips PQ E180F 6688 tubes. Triple Mica gold pin construction! These are an excellent value,,,same Philips contruction only made in the USA
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All prices are per tube
Amperex 6688A
$14.99USA made 6688=E180F These 6688A have black plates, nickel pins, and Amperex orange globe printing 10,000 hour heater, frame grid, broadband Pentode
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All prices are per tube
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All prices are per tube
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All prices are per tube
GE 6688
$12.006688=E180F 10,000 hour 9 pin broadband pentode Supratek Chenin Cortese preamp Yamamoto 06-3 2010
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All prices are per tube
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All prices are per tube
Philips Holland 6688 / E180F
$29.99Special Quality marked "SQ" gold pin manufactured at Heerlen Holland plant. Best of the best. NOS in original boxes. $29.99 per tube.
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All prices are per tube
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All prices are per tube
NOS 6688/E180F tubes are an excellent replacement in the Douk Audio Nobsound 6J9 headphone amplifier.
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