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Mullard

New Matched Octet (8) Mullard KT88 / 6550 Vacuum Tubes

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SKU:
NP146-8
UPC:
683274020907
MPN:
Octet KT88
Availability:
Ships in 1 business day or less.
Shipping:
Calculated at Checkout
  • New Plate Current Matched Octet (8) Mullard Reissue KT88 / 6550 Vacuum Tubes
  • New Plate Current Matched Octet (8) Mullard Reissue KT88 / 6550 Vacuum Tubes
$561.53
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Description

New Plate Current Matched Octet of Mullard Reissue KT88 / 6550 Vacuum Tubes

Directly from the manufacturer: "This is an exact copy of the KT88 valves that were manufactured by Marconi-Osram for Marshall in the late 1960s and 1970s. Excellent replacement output valve for the Marshall Major to retain the original sound."

Will work in place of: KT88, 6550, CV5220, 6550A

Testing and/or Matching

At VIVA TUBES, all of our customers get the same high standard of testing and matching. Some sellers charge more for premium matches but we believe all of our customers should get the same level of quality and service. 

Tubes are tested and/or matched at full operating voltage with regulated power supply on a Maxi Matcher tester for general mutual transconductance (Gm). In addition, power tubes are tested/matched by plate current (Ip) and preamp tubes are tested/matched by gain. Rectifier tubes will be tested for emissions on a calibrated military grade tube tester. 

Our goal is to match within 5% with an upper limit of 15% (15% is the industry limit to consider a set).

Hand written test data included.

Note that we do offer a few models which are tested & matched at the factory. They will be matched by the same parameters (Ip & Gm) but to the manufacturer's standards. Factory testing will be indicated in the item title and description. 

Guarantee

We offer a minimum 90 day guarantee covering functional defects - including noise unless otherwise stated. The guarantee period begins the day you receive your order.

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Additional Information

reverb_offers:
off
reverb_model:
KT88, 6550, CV5220
reverb_condition:
Brand New
reverb_shipping_profile:
$39.99
reverb_upc_does_not_apply:
on
Item Type:
Vacuum Tubes
Production Era:
New/Current Production
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