One pair of 12AU7A/ECC82 tubes, by Mullard of Blackburn in good even ratings.

Some typical Mullard codes are B4B3  and  B4B3.              

Test Ratings:  95/95 to 96/96  on my Jackson 648s tester, minimum is 70, new tubes at about 100-105.

SHIPPING: Shipping to USA and Canada with tracking. But shipping to International countries will be with no tracking, to save you about $35 and more, depending on the particular country.

Combined shipping saves money.

Please pay in 3 days. Combined shipping is welcome. If you have paid for individual items and have surplus shipping fee paid for, I will refund you immediately when I send out the combined parcel.