12au7 in phono pre

I am very fortunate to have some good relationships on this forum. It’s a pleasure to be a part of such a friendly and supportive community.

@Clipdat and @dromunds have both been kind enough to let go of some great tubes for me to roll in the Vincent (partnered with the Rega Ania)

I just got Drew ‘s shipment today. In that shipment was a pair of 1950’s Mullards. I put one in the phono and omg! The soundstage came so alive in comparison to the Genalec Gold Lion. Cymbals are so sweet sounding. What an amazing experience and I’m only one tube in!!
Thanks to both of you as I have quite a bit of experimentation to look forward to for not a lot of coin.
SPEAKERS - ELAC ADANTE AF-61, TOTEM RAINMAKER, SONUS FABER SOLO, DEFINITIVE TECH SM350, MIRAGE OASIS, SONOS PLAY 5 & 1'S, SVS SB16 ULTRA

POWER - PS AUDIO M700, LINN LK240, MARANTZ SR5013

PRE/DACS - PS AUDIO STELLAR GAIN, CAMBRIDGE AUDIO CXN V2

SOURCE - DENON 2910, SONY CDX355, JVC XM448, REGA P2 (MODDED) ANIA CART, REGA FONO MC, XBOX 1 S, TIVO BOLT

POWER/WIRES - AQ NIAGARA 5000, AQ HURRICANE HC 2M, , AQ COLORADO XLR AND RCAs, AQ VICTORIA, ACOUSTIC ZEN SATORI, ATLAS EOS PC, WW STRATUS/AURORA PC, AQ CARBON HDMIs

MISC- OKKI NOKKI, HARMONY ELITE, SONY XBR900E

Comments

  • gudnoyezgudnoyez Posts: 6,729
    Joe I put in a Electro Harmonix 12Au7 in my Vincent and was surprised, since we have the same Phono Pre would you suggest a Mullard over the Genelac Gold Lion you suggested to me a while back?
    Home Theater
    Parasound Halo A 31 OnkyoTX-NR838 Sony XBR55X850B 55" 4K RtiA9 Fronts CsiA6 Center RtiA3 Rears FxiA6 Side Surrounds Dual Psw 111's Oppo 105D Signal Ultra Speaker Cables & IC's Signal Magic Power Cable Technics SL Q300 Panamax MR4300 Audioquest Chocolate HDMI Cables Audioquest Forest USB Cable

    2 Channel
    Adcom 555II Vincent SA-T1 Marantz SA 15S2 Denon DR-M11 Clearaudio Bluemotion SDA 2.3tl's (Z) edition MIT Terminator II Speaker Cables & IC's Adcom 545II Adcom Gtp-450 Marantz CD5004 Technics M245X SDA 2B's, SDA CRS+

    Stuff for the Head
    JD LABS C5 Headphone Amplifier, Sennheiser HD 598, Polk Audio Buckle, Polk Audio Hinge, Velodyne vPulse, Bose IE2, Sennheiser CX 200 Street II, Sennheiser MX 365

    Shower & Off the beaten path Rigs
    Polk Audio Boom Swimmer, Polk Audio Urchin B)
  • joecoulsonjoecoulson Posts: 2,305
    Holy crap yes. The Sonics I am hearing right now with :
    The Doors -LAWoman
    Beck - morning phase
    Dave Grohl -Play

    Are on a whole different playing field than the G lion. Everything has opened. Bass is tighter. Cymbals are so engaging, but the imaging is off the charts. Huge improvement
    SPEAKERS - ELAC ADANTE AF-61, TOTEM RAINMAKER, SONUS FABER SOLO, DEFINITIVE TECH SM350, MIRAGE OASIS, SONOS PLAY 5 & 1'S, SVS SB16 ULTRA

    POWER - PS AUDIO M700, LINN LK240, MARANTZ SR5013

    PRE/DACS - PS AUDIO STELLAR GAIN, CAMBRIDGE AUDIO CXN V2

    SOURCE - DENON 2910, SONY CDX355, JVC XM448, REGA P2 (MODDED) ANIA CART, REGA FONO MC, XBOX 1 S, TIVO BOLT

    POWER/WIRES - AQ NIAGARA 5000, AQ HURRICANE HC 2M, , AQ COLORADO XLR AND RCAs, AQ VICTORIA, ACOUSTIC ZEN SATORI, ATLAS EOS PC, WW STRATUS/AURORA PC, AQ CARBON HDMIs

    MISC- OKKI NOKKI, HARMONY ELITE, SONY XBR900E
  • gudnoyezgudnoyez Posts: 6,729
    Beck Morning Phase is a fantastic album. I guess my next tube will be a Mullard over the Genelac Gold Lion, thanks for posting.
    Home Theater
    Parasound Halo A 31 OnkyoTX-NR838 Sony XBR55X850B 55" 4K RtiA9 Fronts CsiA6 Center RtiA3 Rears FxiA6 Side Surrounds Dual Psw 111's Oppo 105D Signal Ultra Speaker Cables & IC's Signal Magic Power Cable Technics SL Q300 Panamax MR4300 Audioquest Chocolate HDMI Cables Audioquest Forest USB Cable

    2 Channel
    Adcom 555II Vincent SA-T1 Marantz SA 15S2 Denon DR-M11 Clearaudio Bluemotion SDA 2.3tl's (Z) edition MIT Terminator II Speaker Cables & IC's Adcom 545II Adcom Gtp-450 Marantz CD5004 Technics M245X SDA 2B's, SDA CRS+

    Stuff for the Head
    JD LABS C5 Headphone Amplifier, Sennheiser HD 598, Polk Audio Buckle, Polk Audio Hinge, Velodyne vPulse, Bose IE2, Sennheiser CX 200 Street II, Sennheiser MX 365

    Shower & Off the beaten path Rigs
    Polk Audio Boom Swimmer, Polk Audio Urchin B)
  • joecoulsonjoecoulson Posts: 2,305
    Check your PM
    SPEAKERS - ELAC ADANTE AF-61, TOTEM RAINMAKER, SONUS FABER SOLO, DEFINITIVE TECH SM350, MIRAGE OASIS, SONOS PLAY 5 & 1'S, SVS SB16 ULTRA

    POWER - PS AUDIO M700, LINN LK240, MARANTZ SR5013

    PRE/DACS - PS AUDIO STELLAR GAIN, CAMBRIDGE AUDIO CXN V2

    SOURCE - DENON 2910, SONY CDX355, JVC XM448, REGA P2 (MODDED) ANIA CART, REGA FONO MC, XBOX 1 S, TIVO BOLT

    POWER/WIRES - AQ NIAGARA 5000, AQ HURRICANE HC 2M, , AQ COLORADO XLR AND RCAs, AQ VICTORIA, ACOUSTIC ZEN SATORI, ATLAS EOS PC, WW STRATUS/AURORA PC, AQ CARBON HDMIs

    MISC- OKKI NOKKI, HARMONY ELITE, SONY XBR900E
  • joecoulsonjoecoulson Posts: 2,305
    Here is a shot of the Mullard:

    y8156vzrhazy.jpeg
    SPEAKERS - ELAC ADANTE AF-61, TOTEM RAINMAKER, SONUS FABER SOLO, DEFINITIVE TECH SM350, MIRAGE OASIS, SONOS PLAY 5 & 1'S, SVS SB16 ULTRA

    POWER - PS AUDIO M700, LINN LK240, MARANTZ SR5013

    PRE/DACS - PS AUDIO STELLAR GAIN, CAMBRIDGE AUDIO CXN V2

    SOURCE - DENON 2910, SONY CDX355, JVC XM448, REGA P2 (MODDED) ANIA CART, REGA FONO MC, XBOX 1 S, TIVO BOLT

    POWER/WIRES - AQ NIAGARA 5000, AQ HURRICANE HC 2M, , AQ COLORADO XLR AND RCAs, AQ VICTORIA, ACOUSTIC ZEN SATORI, ATLAS EOS PC, WW STRATUS/AURORA PC, AQ CARBON HDMIs

    MISC- OKKI NOKKI, HARMONY ELITE, SONY XBR900E
  • verbverb Posts: 5,591
    Very nice Joe! Those look minty! :smile:
    Basement: Polk SDA SRS, Cary SLP-05 Pre, Enlightened Audio Designs CD Transport, Northstar Designs Intenso DAC, Silnote Morpheus Ref2 Digital Cable, Marantz SA-14 SACD, McIntosh MC300 Amp, Furman 15PFi Power Conditioner, Pangea Power Cables, Wireworld Oasis 8 RCA IC's, MIT Shotgun S3 IC's, MIT Terminator2 Bi-Wire speaker cables
    Office: PC, Marantz CD-1, Marantz AMP-1, Denon UDR-F10 Cassette, Acoustic Technologies Classic Speakers, SVS SB12 Plus Subwoofer, MIT AVt2 speaker cables, IFI Purifier2, AQ Cinnamon USB cable
    Spare Room: Bottlehead SEX 2.1 Integrated Amp, Tisbury Mini Passive Pre, Tjoeb 99 tube CD player (modified Marantz CD-38), AudioEngine B1 Streamer, Klipsch RB-61 v2
    Living Room: Pioneer SX-N30 Network Receiver, Pioneer PD10AE CD Player, Furman M8-LX Power Conditioner, Polk RT265 In Wall Speakers, Polk DSW Pro 660wi Subwoofer
    Spares VTL 2.5 Pre, EAR 834L Pre, Rotel RC1580 Pre, Conrad Johnson MF2300A Amp, Carver TFM35x Amp, (2) Dayens Ampino Integrated, (2) SDA 1C's, Monitor 10's, Monitor 5Jr's, Polk TSi200's, Rega RP1 TT, Project BoxE Bluetooth Streamer
  • joecoulsonjoecoulson Posts: 2,305
    Thanks to @Clipdat for these guys.
    SPEAKERS - ELAC ADANTE AF-61, TOTEM RAINMAKER, SONUS FABER SOLO, DEFINITIVE TECH SM350, MIRAGE OASIS, SONOS PLAY 5 & 1'S, SVS SB16 ULTRA

    POWER - PS AUDIO M700, LINN LK240, MARANTZ SR5013

    PRE/DACS - PS AUDIO STELLAR GAIN, CAMBRIDGE AUDIO CXN V2

    SOURCE - DENON 2910, SONY CDX355, JVC XM448, REGA P2 (MODDED) ANIA CART, REGA FONO MC, XBOX 1 S, TIVO BOLT

    POWER/WIRES - AQ NIAGARA 5000, AQ HURRICANE HC 2M, , AQ COLORADO XLR AND RCAs, AQ VICTORIA, ACOUSTIC ZEN SATORI, ATLAS EOS PC, WW STRATUS/AURORA PC, AQ CARBON HDMIs

    MISC- OKKI NOKKI, HARMONY ELITE, SONY XBR900E
  • mhardy6647mhardy6647 Posts: 21,236
    edited February 2
    Interesting to see a 12AU7 used in a phono preamp. It's a fairly "low mu" (technically "medium mu") tube compared to the 6922 or 12AX7 ("high mu") amplifier tubes usually used... or is the tube "just" used as a buffer after a solid stare amp/EQ stage in your preamp?

    amplification factor(s) of the 12AU7 = 17.0 (triode 1) and 19.5 (triode 2).
    http://www.tubebooks.org/tubedata/HB-3/Receiving_Tubes_Part_2/12AU7-A.PDF

    amplification factor of the 12AX7 = 100 (both triode sections).
    http://www.tubebooks.org/tubedata/HB-3/Receiving_Tubes_Part_2/12AX7-A.PDF
  • ClipdatClipdat Posts: 6,216
    edited February 2
    I believe the tube is used as a buffer for coloration.

    j9nquxzs72s3.jpeg
    • "Electronic music is human sound adapting to indulge technology, and for some, it feels like the signature sound of energy. New and abstract sounds over hypnotic rhythms can conjure vast soundscapes for escape, pleasure, and transcendence."
  • mhardy6647mhardy6647 Posts: 21,236
    that makes sense
  • joecoulsonjoecoulson Posts: 2,305
    That’s right guys. I don’t know a fraction of what you guys know, I just know when the Mullard went in, the sound was a huge change.
    SPEAKERS - ELAC ADANTE AF-61, TOTEM RAINMAKER, SONUS FABER SOLO, DEFINITIVE TECH SM350, MIRAGE OASIS, SONOS PLAY 5 & 1'S, SVS SB16 ULTRA

    POWER - PS AUDIO M700, LINN LK240, MARANTZ SR5013

    PRE/DACS - PS AUDIO STELLAR GAIN, CAMBRIDGE AUDIO CXN V2

    SOURCE - DENON 2910, SONY CDX355, JVC XM448, REGA P2 (MODDED) ANIA CART, REGA FONO MC, XBOX 1 S, TIVO BOLT

    POWER/WIRES - AQ NIAGARA 5000, AQ HURRICANE HC 2M, , AQ COLORADO XLR AND RCAs, AQ VICTORIA, ACOUSTIC ZEN SATORI, ATLAS EOS PC, WW STRATUS/AURORA PC, AQ CARBON HDMIs

    MISC- OKKI NOKKI, HARMONY ELITE, SONY XBR900E
  • pitdogg2pitdogg2 Posts: 12,856
    joecoulson wrote: »
    That’s right guys. I don’t know a fraction of what you guys know, I just know when the Mullard went in, the sound was a huge change.

    Naaa you were just mesmerized by the mullard orange glow. That electron cookoff will get you everytime.
  • joecoulsonjoecoulson Posts: 2,305
    True^
    SPEAKERS - ELAC ADANTE AF-61, TOTEM RAINMAKER, SONUS FABER SOLO, DEFINITIVE TECH SM350, MIRAGE OASIS, SONOS PLAY 5 & 1'S, SVS SB16 ULTRA

    POWER - PS AUDIO M700, LINN LK240, MARANTZ SR5013

    PRE/DACS - PS AUDIO STELLAR GAIN, CAMBRIDGE AUDIO CXN V2

    SOURCE - DENON 2910, SONY CDX355, JVC XM448, REGA P2 (MODDED) ANIA CART, REGA FONO MC, XBOX 1 S, TIVO BOLT

    POWER/WIRES - AQ NIAGARA 5000, AQ HURRICANE HC 2M, , AQ COLORADO XLR AND RCAs, AQ VICTORIA, ACOUSTIC ZEN SATORI, ATLAS EOS PC, WW STRATUS/AURORA PC, AQ CARBON HDMIs

    MISC- OKKI NOKKI, HARMONY ELITE, SONY XBR900E
  • verbverb Posts: 5,591
    joecoulson wrote: »
    Thanks to @Clipdat for these guys.

    I'm jealous! @Clipdat Drew where did you get those! :smile:
    Basement: Polk SDA SRS, Cary SLP-05 Pre, Enlightened Audio Designs CD Transport, Northstar Designs Intenso DAC, Silnote Morpheus Ref2 Digital Cable, Marantz SA-14 SACD, McIntosh MC300 Amp, Furman 15PFi Power Conditioner, Pangea Power Cables, Wireworld Oasis 8 RCA IC's, MIT Shotgun S3 IC's, MIT Terminator2 Bi-Wire speaker cables
    Office: PC, Marantz CD-1, Marantz AMP-1, Denon UDR-F10 Cassette, Acoustic Technologies Classic Speakers, SVS SB12 Plus Subwoofer, MIT AVt2 speaker cables, IFI Purifier2, AQ Cinnamon USB cable
    Spare Room: Bottlehead SEX 2.1 Integrated Amp, Tisbury Mini Passive Pre, Tjoeb 99 tube CD player (modified Marantz CD-38), AudioEngine B1 Streamer, Klipsch RB-61 v2
    Living Room: Pioneer SX-N30 Network Receiver, Pioneer PD10AE CD Player, Furman M8-LX Power Conditioner, Polk RT265 In Wall Speakers, Polk DSW Pro 660wi Subwoofer
    Spares VTL 2.5 Pre, EAR 834L Pre, Rotel RC1580 Pre, Conrad Johnson MF2300A Amp, Carver TFM35x Amp, (2) Dayens Ampino Integrated, (2) SDA 1C's, Monitor 10's, Monitor 5Jr's, Polk TSi200's, Rega RP1 TT, Project BoxE Bluetooth Streamer
  • ClipdatClipdat Posts: 6,216
    I think it's cool that they made such a big difference.
    • "Electronic music is human sound adapting to indulge technology, and for some, it feels like the signature sound of energy. New and abstract sounds over hypnotic rhythms can conjure vast soundscapes for escape, pleasure, and transcendence."
  • ClipdatClipdat Posts: 6,216
    verb wrote: »
    I'm jealous! @Clipdat Drew where did you get those! :smile:

    Came with the Backert. I believe they are originally from here: http://arizonatubesupply.com/
    • "Electronic music is human sound adapting to indulge technology, and for some, it feels like the signature sound of energy. New and abstract sounds over hypnotic rhythms can conjure vast soundscapes for escape, pleasure, and transcendence."
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