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Electro-Harmonix

New Matched Quad (4) Electro-Harmonix 12AT7 / ECC81 Vacuum Tubes

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SKU:
NP130-4
UPC:
735757043818
MPN:
Quad 12AT7EH
Availability:
Ships in 1 business day or less.
Shipping:
Calculated at Checkout
$85.55

Description

New Gain Matched Quad of Electro-Harmonix 12AT7 / ECC81 Vacuum Tubes

The large plate format 12AT7 has a slightly lower voltage gain than its 12AX7 counterpart coupled with a higher plate current - making it a popular choice of tube for guitar amplifiers, drivers and phase inverters.

Will work in place of: 12AT7EH, 12AT7, ECC81, 6679, 12AT7WA, 12AT7WB, 12AT7WC, CV455, 6060, 6679, CV4024, M8162

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:
12AT7, ECC81, 6679, 12AT7WA, 12AT7WB, 12AT7WC
reverb_condition:
Brand New
reverb_shipping_profile:
$14.99
reverb_upc_does_not_apply:
on
Item Type:
Vacuum Tubes
Production Era:
New/Current Production
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