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Tung-Sol

New Matched Octet (8) Tung-Sol 7581A Vacuum Tubes

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SKU:
NP085-8
UPC:
609722163415
MPN:
Octet 7581A
Availability:
Ships in 1 business day or less.
Shipping:
Calculated at Checkout
On Sale
Now: $326.92
Was: $363.24

Description

New Plate Current Matched Octet of Tung-Sol 7581A (KT66) Vacuum Tubes

The Tung-Sol 7581A is rated at a higher 35 watts compared to the standard 7581 or 6L6GC. This tube is a direct substitute for the KT66, and is in fact a version of the KT66. These Tung-Sols were built to last with a very large plate structure and many heat dissipaters for reliability. The 7581A has a very warm tone and gives you much more headroom if ran in place of a standard 6L6GC.

Will work in place of: 7581A, 7581, KT66

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:
7581 7581A KT66
reverb_condition:
Brand New
reverb_shipping_profile:
$19.99
reverb_upc_does_not_apply:
on
Item Type:
Vacuum Tubes
Production Era:
New/Current Production
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