Original Genalex Gold Lion tubes are considered among the best 12AX7 tube types ever made. They are hard to find and when they are available, they are expensive. We now have the reissue CV4004 (ECC83) version in stock. It has long plates and gold pins.
"Sonically I find these tubes to have a lot of punch. More gain than a JJ ECC83S and less gain than a Shuguang 12AX7B. Noise is extremely low and microphonics are almost non-existent. I attribute that to the overall build quality. The high end on these tubes may be described as silky. Lots of definition and sparkle without a hint of harshness. The bottom end is not as pronounced as I had expected. Not an issue in a guitar amp and they certainly worked well in my tube pre-amp."
One other note about the construction of these tubes is they have filaments that are almost completely encased in the plate structure. They don't "light up" brightly when working properly.
原始的Genalex金獅管被認為是有史以來最好的12AX7管類型之一。 它們很難找到，一旦有售，價格昂貴。 現在，我們有重新發行的CV4004（ECC83）版本的庫存。 它有長盤子和金針。
“很明顯，我發現這些電子管具有很大的衝擊力。它的增益比JJ ECC83S大，而比曙光12AX7B小。噪聲極低，幾乎沒有麥克風。我將其歸因於整體製造質量。 這些電子管的末端可能被描述為絲滑的。許多清晰度和火花，沒有刺耳的刺耳聲。底端不如我預期的那樣明顯。在吉他放大器中不是問題，它們在我的電子管前置放大器中肯定能很好地工作。 放大器。”
關於這些管的構造的另一個注意事項是它們具有幾乎完全包裹在板結構中的細絲。 正常工作時，它們不會“點亮”。