Lots of tube, little price.
Excellent tube on a budget. I've paid more for less. Clarity and frequency response are very good. Low end is robust and clear and the midrange is thick. As other reviews state, they are dark and are good for taming excessive high end. If you like lots of treble in your sound you may want to look elsewhere. For $20 this tube is a rock solid performer. Good job JJ, money well spent.