Preamp tubes like the 12A*7, 6S*7,6922/6DJ8/ECC88 don’t really require matching because the amplification factor/mu of each triode half is usually very close and current draw varies little between these small-signal tubes.
Matched Tubes Quicksilver Line Pre
I just ordered a couple 12AT7’s for my Quicksilver Line Pre and I don’t believe I requested a matched pair. I emailed seller and asked him to make sure they were before USPS picked them up, but he did not respond.hmmmmmm
How important is this? Surely if I had remembered I would have requested it in the beginning. The fact that there is no bias adjustment tells me it is not an issue.
Any thoughts by someone WITH ACTUAL EXPERIENCE on this issue?
Thank you in advance,
TD
13 responses Add your response
@yogiboy whatever you say. You can ask Mike, I had several discussions with him about it. Or don’t. |
@gochurchgo Really? TUBES Your preamp is shipped with J.J. 12AT7s, which we feel provide the best sound, and have a life span of many thousands of hours. The J.J. 12AT7 is a new design and provides superior performance to new old stock 12AT7s. The Chinese also have a redesigned 12AT7 which provides very good performance |
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@hilde45 You moved on to a different pre.....Why? what did you get and why? and what changes did you notice? Any regrets? |
@tonydennison A friend loaned me a very nicely built preamp based on the 6SN7 tube. I compared it agains the QS Linestage for months. Back and forth, all kinds of music, with both tube amps and class A solid state in the mix. Over and over, the 6SN7 tube had more body, bloom, space, and a bigger soundstage. It was really not even close for me. I had upgraded my QS linestage with really good caps, too, so it was hard to let it go, but my ears want what they want. A local buyer took it off my hands for a fair price and I gave him all my tubes — including some very nice NOS tubes. No tube for the QS linestage could make a difference against the 6SN7 tube — for me. |