5751 tubes

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muncybob
muncybob Posts: 3,326
in Wanted (WTB) Classifieds
I am looking for a pair(preferably matched) of tubes that would play well with my current pair of 1964 Sylvania tubes. My phono stage takes 4 tubes(other pair are 12ax7) and am thinking all 4 being the same type of tube is best?
Yep, my name really is Bob.
Parasound HCA1500A(indoor sound) and HCA1000(outdoor sound), Dynaco PAS4, Denon DP1200 w/Shure V15 Type V and Jico SAS stylus, Marantz UD7007, Polk L600, Rythmik L12 sub.
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  • Unknown
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  • WagnerRC
    WagnerRC Posts: 2,227
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    Ivan what are your thoughts on these? I found em in my stash

    0q9mqvsx28a1.jpg
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  • F1nut
    F1nut Posts: 52,406
    edited March 2024
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    Late '50's Sylvania 5751 triple mica black plates with yellow lettering are da bomb. The green letter Sylvania ones suck.

    Yellow lettering.
    x001qjjngczx.png
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  • heiney9
    heiney9 Posts: 25,710
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    Early 5 Starr black plate GE's 5751's are one of the few great sounding GE tubes.

    Look for late 50's early 60's Tung Sol gray plate 5751's, they are superb.

    H9
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | Galion TS P75 Pre | Holo Audio Cyan 2 Dac | MIT Shotgun S1 | Puritan Audio PSM136 Pwr Condtioner & Classic PC's | Legend L600 | Roon Nucleus 1 w/LPS - Tubes add soul!
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  • heiney9
    heiney9 Posts: 25,710
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    Raytheon JRP CRP 5751 - early 60's pinch plate, black plate w/square getter are what I am currently running and they are also phenomenal.

    H9
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | Galion TS P75 Pre | Holo Audio Cyan 2 Dac | MIT Shotgun S1 | Puritan Audio PSM136 Pwr Condtioner & Classic PC's | Legend L600 | Roon Nucleus 1 w/LPS - Tubes add soul!
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  • muncybob
    muncybob Posts: 3,326
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    It has also been suggested to look at early Tung Sol, USA made grey plates...but at $190 a pair?
    Yep, my name really is Bob.
    Parasound HCA1500A(indoor sound) and HCA1000(outdoor sound), Dynaco PAS4, Denon DP1200 w/Shure V15 Type V and Jico SAS stylus, Marantz UD7007, Polk L600, Rythmik L12 sub.
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  • Unknown
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    edited March 2024
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    edited March 2024
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  • WagnerRC
    WagnerRC Posts: 2,227
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    Any comments on these? Thanks

    pdzqfsx2nn1u.jpg
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  • heiney9
    heiney9 Posts: 25,710
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    muncybob wrote: »
    It has also been suggested to look at early Tung Sol, USA made grey plates...but at $190 a pair?

    Yes, be patient. But old stock tube prices are off the charts these days. But, I think some of the pricing is really high and the stuff just sits. $190/pr. is high for those tubes from a non-dealer w/o a warranty, IMO.

    H9
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | Galion TS P75 Pre | Holo Audio Cyan 2 Dac | MIT Shotgun S1 | Puritan Audio PSM136 Pwr Condtioner & Classic PC's | Legend L600 | Roon Nucleus 1 w/LPS - Tubes add soul!
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  • heiney9
    heiney9 Posts: 25,710
    edited March 2024
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    WagnerRC wrote: »
    Any comments on these? Thanks

    pdzqfsx2nn1u.jpg

    Have to see the actual tubes and markings. Boxes can be reprinted to look like one thing when the tube is actually another. I'd never purchase tubes just based on the package or what's written on the package. I have to see the tube to look at construction cues, date codes, glass envelope style, etc. Lots of very mediocre tubes were produced in the mid-late 70's and through the early 90's that people pass off as earlier much better product.

    All that being said, I don't own anything that uses that tube designation or it's equivalents so I am not that well versed in the different construction styles.

    Older Amperex (an American company) made in Holland are really good 6DJ8's (which is the American) designation the Euro designation is a ECC88.

    So those are probably very good if they aren't 80's or 90's made. Or not true Holland made tubes. Richardson Electronics bought the Amperex name (along with others) in the 80's and labeled many inferior tubes as the real deal. Or rather gave the buyer the impression they were real deal tubes.

    H9
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | Galion TS P75 Pre | Holo Audio Cyan 2 Dac | MIT Shotgun S1 | Puritan Audio PSM136 Pwr Condtioner & Classic PC's | Legend L600 | Roon Nucleus 1 w/LPS - Tubes add soul!
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  • heiney9
    heiney9 Posts: 25,710
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    muncybob wrote: »
    It has also been suggested to look at early Tung Sol, USA made grey plates...but at $190 a pair?

    Tube Depot has NOS 50's Tung SOl 5751 for $120.00 a piece. LOL :p

    Here see these, offer the guy $125 and see what he says.

    https://www.ebay.com/itm/335277812696?itmmeta=01HRWYZSRPRZ71S6QW03NGKF7H&hash=item4e101d6bd8:g:F4kAAOSwKXVlci~D&itmprp=enc:AQAIAAAA4FMDuyU4+1CT8EJ8tUtDLgtAMLKtBTzHguyn8VINdSXraq0+nzcCurWzIH+oggzA8Fjm2fphOPEJgdYFObQmLUWAkFa1r1DrYzMcADzdzHFirYeUFc0yfol47URs2zwLBzUKuzDeqaD7UoYAqxe5myc4hnt7+uzRfHGFy0Uimh5h6Xhb/Az7U/MTntCuakuopTlgdGgeDr8rsAtimUxxhXpqBhl2DDGFZfQ+zZVi+1G+bjBbuZpVmza7VNeC3EysRt2MmkBMxGhn8oE4+rLeUe+HxOPllirBRCs/WwV6u5v6|tkp:BFBMtpz_nsdj

    H9
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | Galion TS P75 Pre | Holo Audio Cyan 2 Dac | MIT Shotgun S1 | Puritan Audio PSM136 Pwr Condtioner & Classic PC's | Legend L600 | Roon Nucleus 1 w/LPS - Tubes add soul!
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  • WagnerRC
    WagnerRC Posts: 2,227
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    Thanks Brock. I found my info. I bought these from "snow" back in 2017. I appreciate the comments
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  • heiney9
    heiney9 Posts: 25,710
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    Snow's tubes are solid for sure
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | Galion TS P75 Pre | Holo Audio Cyan 2 Dac | MIT Shotgun S1 | Puritan Audio PSM136 Pwr Condtioner & Classic PC's | Legend L600 | Roon Nucleus 1 w/LPS - Tubes add soul!
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  • muncybob
    muncybob Posts: 3,326
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    Some good info, the search is on....thanks.
    Yep, my name really is Bob.
    Parasound HCA1500A(indoor sound) and HCA1000(outdoor sound), Dynaco PAS4, Denon DP1200 w/Shure V15 Type V and Jico SAS stylus, Marantz UD7007, Polk L600, Rythmik L12 sub.
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  • WagnerRC
    WagnerRC Posts: 2,227
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    Here is a good read.

    https://www.audioasylum.com/scripts/d.pl?audio/faq/joes-tubes.html
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  • heiney9
    heiney9 Posts: 25,710
    edited March 2024
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    WagnerRC wrote: »
    Here is a good read.

    https://www.audioasylum.com/scripts/d.pl?audio/faq/joes-tubes.html

    Yeah, YMMV. He's pretty opinionated and IMO, off base on some of his assessments. But, they are his assessments and you can't fault him for liking what he likes. His way of identifying is a bit flawed as well.

    This is also 25 years old.

    H9
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | Galion TS P75 Pre | Holo Audio Cyan 2 Dac | MIT Shotgun S1 | Puritan Audio PSM136 Pwr Condtioner & Classic PC's | Legend L600 | Roon Nucleus 1 w/LPS - Tubes add soul!
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