Thomas,
I had to return two sets of the Melz 1578 tubes due to noise. I could hear them at my listening position and my speakers are not very sensitive. I did get one quiet pair and kept those. I wanted to get another pair for when these wear out, but gave up. The 6N8S from Ukraine are surprisingly good.
I had to return two sets of the Melz 1578 tubes due to noise. I could hear them at my listening position and my speakers are not very sensitive. I did get one quiet pair and kept those. I wanted to get another pair for when these wear out, but gave up. The 6N8S from Ukraine are surprisingly good.