One thought on “Valvo/Amperex 12au7 Hamburg D-getter”
This is truly one of the rarest 12au7 tubes I have ever encountered, it is usually branded by Amperex but was actually produced by Valvo in Hamburg, Germany, even though most cases are confusingly marked as Made in Holland. My specific unit dates back to 1956, and it remains a mystery why the labeling was handled this way during the mid 1950s. Sound-wise, this is a very unusual tube that offers a remarkably rich profile, far surpassing the Mullard square-getter from the same era. It provides a very warm and inviting sound while maintaining excellent transparency and sound stage, which is a fantastic and practically impossible combination to find. This is a very smooth sounding tube characterized by a luscious mid-range.
This is truly one of the rarest 12au7 tubes I have ever encountered, it is usually branded by Amperex but was actually produced by Valvo in Hamburg, Germany, even though most cases are confusingly marked as Made in Holland. My specific unit dates back to 1956, and it remains a mystery why the labeling was handled this way during the mid 1950s. Sound-wise, this is a very unusual tube that offers a remarkably rich profile, far surpassing the Mullard square-getter from the same era. It provides a very warm and inviting sound while maintaining excellent transparency and sound stage, which is a fantastic and practically impossible combination to find. This is a very smooth sounding tube characterized by a luscious mid-range.
Final Verdict: Highly Recommended.