You are bidding for 2 Vacuum tube 6L6G NOS  EL37 Hitachi, Ltd.
quality made in Tokyo Japan in the 1960's
replaces 5881, KT66,350b, 7581, KT77

  • big coke bottle
  • Clear glass and large black plate
  • Double mica
  • Top halo two square getter
  • Copper rods inside
  • Grey Plate
  • Large black base has silver print with the Hitachi logo
  • Bottom base code 06

Their own original carton boxes Ultra Rare NOS tubes with excellent sound quality best for HIFI amplifier
Superior tubes very very rare to find in NOS NIB conditions like these, 
flawless rugged construction,excellent flawless structure,manufactured with excellent construction,
Tubes were made by Hitachi using Mullard equipment

Sound Great life in the mids, wonderful extension, smooth and Warm sound , sound quality improvement 
Preserved for more than 50 years in a warehouse, just opened to be tested.

TESTED STRONG AS TUBES OF UTEST GOOD IN GS-360P Digital vacuum tube tester


Test at ua(v) 250v, ug2(v) 250v,  ug1(v) -14v  result test : ia(ma) 

  1.  set result  test at: 67.5 ma / 67.5 ma.
  2.  set result  test at: 68.2 ma / 68.2 ma
  3.  set result  test at: 68.5 ma / 68.5 ma
  4.  set result  test at: 68.7 ma / 68.8 ma
  5.  set result  test at: 69.3 ma / 69.5 ma
  6.  set result  test at: 69.7 ma / 69.7 ma

Test very strong  by GOOD in B&K Model 707 Tester.

 

with NO shorts or grid emissions


see the photos, it's what will send you, real photos.

These Tube Are All Perfect in the original Factory Boxes


New & in original Hitachi packaging. NOS



We accept PAYPAL , Payooner


 Please ask any question you may have before purchase/offer 

Buyers are also responsible also to pay any custom's fees and duties under the laws


IMPORTANT for WORLDWIDE eBayers:

I ship this item from MEXICO with "Parcel Post"  and I can ship worldwide.

After shipping I will supply the number of your parcel.

For any further questions please contact me.

Thank you. You are Welcome!


PD. customers shipping to CANADA please request a quote prior to purchase

International shipments. By parcel post some time  take a little longer than normal in countries like Canada, UK, Australia, China, I send tracking number for Mexico, but in this country need to check at arrivet maybe dont tracking there , I could request a faster shipping EMS  with extra cost, thanks for understanding,