Amperex "PQ" 6922 - Super super rare gold pin 6922 early 1960's vintage made by Amperex U.S.A. Branded with the "PQ" shield. We even have some made in 1960 which had the taller bottle similar to their Dutch cousins. In 1961 they started using a slightly shorter bottle. Still a very cool and highly sought-after tube. The "tall bottle" version is a little more money.

A quick note about this tube: Many of the earliest vintages of 6922 tubes were sensitive to vibration. This means that if you use them in your preamp or phonostage, they may go "TING!" when you flip switches or tap on the preamp. Understand this is normal.

We have tested every tube to our highest standards and some actually do test to our Platinum Grade standards! But... if you've got a preamp with a lot of gain... this ain't the tube for you.

Due to the extreme rarity of this tube, they are sold as all-sales final, no warranty exchanges or refunds.

Please call or email before ordering so we can determine if this tube will be a good candidate for your equipment, as some gear will be too brutal and this tube may not hold up very long.

Platinum grade - The best of the best. Lowest noise and microphony with the tightest triode balance we have available. This is typically 10% or tighter, but may be higher depending on available stock.

Gold grade - Low noise and microphonics with a triode balance typically between 15% and 20%, but may be higher depending on available stock.

Driver grade - Lowest noise but not the lowest in microphony. Triode balance will be similar to Gold grade.
This grade is only suitable for use in the driver stage of an amplifier, or the output/buffer stage of a DAC or CD Player.

If you have a preamp or phonostage, you need at least Gold grade.

Click here for a more in depth discussion on how we grade tubes.

Price includes matching in any quantity you need at no extra charge.