Tape Head cleaner is much cheaper and cleans quite well w/o leaving a residue. I've been using the below and it works fabulously. You won't believe the gunk it removes from seemingly clean pins.
Tape Head cleaner is much cheaper and cleans quite well w/o leaving a residue. I've been using the below and it works fabulously. You won't believe the gunk it removes from seemingly clean pins.
A bit more than just alcohol. It is safe for rubber pinch rollers, etc on tape machines, etc., where-as Isopropyl alcohol can dry those out. I've used iso alcohol and it does not clean as effectively as this does. Also contains isohexane and n-hexane which seems to improve ability to dissolve tube pin crud.
Does anyone know a bit more about this tube? I got it quite cheap from eBay couple of years ago and I've been very happy with it in my Schiit Lyr3 ever since
According to the seller's information it's a US made tube (obviously) from the 50s or 60s made to German military specifications...? At least that's what I make of the "BWB 933" logo on the side of the tube. Accoring to what I found online it stands for "Bundesamt für Wehrtechnik und Beschaffung" which basically means the German army's supply chain dept.
I can't say much about the sound other than I absolutely love it. I've been using only this tube for the past two years and can currently only compare it to the Russian 6N8S my Lyr3 came with.
Just bought a Sylvania JAN-CHS-6SN7GT VT-231 and some cheap Soviet 6H8C / 6N8S from Ukraine. Quite excited to hear how they sound
These tubes are enroute to me for my Feliks Euforia. Can't wait to get them. Is there an easy and inexpensive way to clean the pins which seems a bit dirty to me?
Does anyone know a bit more about this tube? I got it quite cheap from eBay couple of years ago and I've been very happy with it in my Schiit Lyr3 ever since
According to the seller's information it's a US made tube (obviously) from the 50s or 60s made to German military specifications...? At least that's what I make of the "BWB 933" logo on the side of the tube. Accoring to what I found online it stands for "Bundesamt für Wehrtechnik und Beschaffung" which basically means the German army's supply chain dept.
I can't say much about the sound other than I absolutely love it. I've been using only this tube for the past two years and can currently only compare it to the Russian 6N8S my Lyr3 came with.
Just bought a Sylvania JAN-CHS-6SN7GT VT-231 and some cheap Soviet 6H8C / 6N8S from Ukraine. Quite excited to hear how they sound
A bit more than just alcohol. It is safe for rubber pinch rollers, etc on tape machines, etc., where-as Isopropyl alcohol can dry those out. I've used iso alcohol and it does not clean as effectively as this does. Also contains isohexane and n-hexane which seems to improve ability to dissolve tube pin crud.
So is this a re-branded Sylvania tube? The print says RCA but from reading in this thread I've learned that re-branding tubes as manufacturer A when in fact manufacturer B had made them was not uncommon back then?
So is this a re-branded Sylvania tube? The print says RCA but from reading in this thread I've learned that re-branding tubes as manufacturer A when in fact manufacturer B had made them was not uncommon back then?
In original post, Robert H says this of the 1952 “three hole” Syl 67N7GT: “later in '52 the tube changed to a shorter bottle with round serrated micas - an ordinary, dry sounding tube - but it does have a 1952 date code and many sellers try to pass it off as the good ones.”
anyone know what week this change over happened? Or rough idea?
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