New Genalex KT77 Reissue Vacuum Tube

100% GUARANTEED & TESTED TUBES

All tubes are tested for Gm, shorts, leaks, gas, and noise on one of our vintage, calibrated, or state of the art digital tube testers. Buy from the experts and avoid hassle!

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Brand New In Box Genalex Reissue KT77 KT-77 Vacuum Tube Plate Current Tested

A faithful reproduction, this Genalex Gold Lion KT77 has heavy glass and ruggedized plates that will allow it to handle just about any abuse you give it and still have room to breathe. With gold plated grid wire and beautiful artwork, the KT77 has a lot of power with good headroom, too.

Precision Testing & Matching

Test Data on the Box

Power Tubes: Checked for shorts, gas and leaks. Tested for and/or matched by Plate Current (Ip) and General Mutual Transconductance (Gm) at real world voltages on a Maxi-Matcher tube tester.

Preamp Tubes: Checked for shorts, gas and leaks. Tested for and/or matched by Gain and General Mutual Transconductance (Gm) at real world voltages on a Maxi-Matcher Preamp II tube tester.

Rectifier Tubes: Checked for shorts, gas and leaks. Tested for and/or matched by Emissions on a calibrated Hickok TV-7 or Triplett 3444 tube tester.
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Shipping & Handling

We have a retail location located in Easthampton MA! You are more than welcome to pickup your order in person. Our typical hours are Monday - Friday 9:00 AM to 5:00 PM but we do offer extended hours so please call first!

Combined Shipping Policy

On vivatubes.com shipping is automatically calculated & combined shipping is built into our pricing. 

On reverb.com combined shipping is not supported. If you want combined shipping, you will have to order your tubes elsewhere. We will not refund you the difference on reverb.com.

All orders before 1:00 PM EST ship same-day. All orders shipped within 1 business day.

On vivatubes.com Domestic & International buyers can choose USPS First Class Mail or USPS Priority Mail.

On reverb.com only one shipping option is supported. Domestic & International ordrs will be shipped via USPS First Class Mail. 


Typical transit times:

Domestic USPS First Class Mail: 3-9 Days, includes tracking

Domestic USPS Priority Mail: 1-3 Days, includes tracking

International USPS First Class Mail: Typically 3-6 weeks but up to 3 months! - NO TRACKING

International USPS Priority Mail: 6-14 Days - Includes Tracking

International Shipping Disclaimer

International orders will be shipped by USPS First Class Mail International by default, which is the cheapest possible way and you do get what you pay for. This shipping service is very cost-effective and extremely safe, but you will not be able to track your package. It usually takes 3-6 weeks for a First Class Mail International package to arrive, but can take UP TO 3 MONTHS FOR DELIVERY DUE TO CUSTOMS, ESPECIALLY IN CERTAIN STRICT COUNTRIES LIKE RUSSIA, CHINA OR BRAZIL.

We guarantee all of our shipments, but we do ask that our customers wait 90 days before we grant a full refund due to a lost package. We have shipped thousands of items internationally using First Class Mail and while we have had plenty take several months to arrive but we have had less than 10 actual lost packages.

* Remember - You Have 6 Months of Coverage Through PayPal or your Credit Card company *

DEPENDING ON YOUR COUNTRY'S POLICIES, YOU MAY BE RESPONSIBLE FOR IMPORT TAXES WHEN ORDERING OVERSEAS FROM US. WE ARE NOT RESPONSIBLE FOR ANY TAXES, DUTIES, OR CUSTOMS FEES.