Hi guys, I just posted a short review on the the Sovtek 5751 and the RCA Command Series 5751 as used in my Maple Tree Audio Ear+ headphone amp as the driver tube.
Comments and thoughts appreciated!
Comments and thoughts appreciated!
Dude, that was not short! How many words was that? I need photos and diagrams. Dont much understand that many words in a row. Good review tho, nice to see someone taking a serious approach for once and doesnt just enjoy the music without demanding some minimal performance. Have u tried listening to a tube dipped in vinegar? Really gets the tone out. Perhaps thats what the cheap Sovtek needs.
The Ear design schematic is easily available on-line. It is direct couple grounded cathode driver stage followed by a cathode follower output that is transformer coupled to the headphone.
You serious about vinegar? Not sure how that can affect performance of a tube?
You serious about vinegar? Not sure how that can affect performance of a tube?
Almost $100 for a 5751? That is really astonishing! Where have I been? I have a dozen RCA 5751 NIB tubes I found in a junk shop in Encinitas, CA years ago for $1 each. I was going to use them in a conrad johnson preamp but never needed them.
Not really. A NOS TFK ECC803S sells for hundreds of $. Across the board, type after type, quality NOS is fast disappearing.
I think you can get some non "Command Series", but still RCA Blackplates for $60 or so from another tube dealer. Not sure if they are different. I might try some 12AT7 in this as well to compare.
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