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Thread: The 6SL7GT valve & It's variants - MY ADVENTURES!

  1. #41
    Join Date: Nov 2010

    Location: Yorkshire

    Posts: 9,302
    I'm Andrew.

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    PT XIII - New Reference. Tung Sol black Bottles - 1940's vintage.

    Say hello to my new reference valves. Yet another score from USA. A beautiful light airy mid range. Piano playing is crisp and exact. Soundstage is wide and 3D in nature with very carefully positioned band members. It is with extreme ease that I can follow every band member and not in a rushed manner, the music just simply flows with great clarity and with a timeless manner. Drum work is fast, snappy, accurate. These valves have no problem in transcribing complex jazz passages. Every note just seems to start and stop with pinpoint accuracy. These valves are a little strident and female vocals can appear a little shouty but in all honesty it's something I can live with. These valves are sure packed with an addicitve factor. It's been quite some time that I've wanted to try so many pieces of vinyl to see how a pair of valves perform. My only gripe with these valves is that they take quite a while to warm up, but boy once they are warmed up they perform, and perform well! I have to say that in all the valves that I have reviewed TUNG SOL seem to produce the best to my ears. I'm now running out of 6SL7GT's and shall
    be starting with the 6SL7GTW's, I've ventured into the VT229 territory and if my wallet can handle it, the ECC35 and
    5691 variants. The USA seems to be a fertile hunting ground for these valves.



    tungsol.jpgvalve2.jpg

    So how do these fair on the shoot-out table?
    1. Tung Sol 6S7GT (Black Bottle) 9.6/10
    2. Tung Sol 6SL7GT (Orange base) 9.5/10
    3. Mullard 6SL7GT (Black base) 9.25/10
    3.= Ken Rad 6SL7GT (Black Base) VT229 9.25/10
    4. Tung Sol 6SL7GT VT229 (Black bottle) 9.1/10
    5. General Electric GSL7GT (Black base 1970's) 8.75 / 10
    5. Slyvania 6SL7GT black base 7/10
    7. Brimar 6SL7GT (black base) 6.25/10
    8. Reflektor black base 70's version 5/10

    Next time, we shall be looking into the more exotic 6188 and 5691 variants!
    SS
    CD Teac VRDS25X(Audiotuned) DECK 1210 Mat Crystal Audio Mods MN Base/Bearing/Platter+Ebony armboard Feet Isonoe PSU Paul Hynes SR7EHD-27XL/DCSXL Ag DC lead/3 Stage Regs/Recap PCB+No Pitch/Strobe/Light ARM SME V(Kondo Ag Rewire&Tags) MC Cadenza Black FGS CABLES Arm Yannis SPD-4 IC Yannis 222 Litz+Ag bullets Power WAR PRE ATC SCA2 SPEAKERS ATC 50ASL STANDS Atacama PHONO Sugden Masterclass PA4 SUT Ortofon ST80SE POWER PSAudio P10

    VALVE
    PRE
    Croft Epoch(Modded) AMP Sondex S100 (Modded) SPEAKERS Tannoy 15"MG+RFC Warwick cabs+ Ref XO + Batpure supertweeters DECK Garrard 301 Mat Teunto Bearings 401(Bastin) Plinth Bamboo Arms 3009/3012 PSU Eagle+Tachometer MC Ag Meister II/FGS + Ortofon SPU MONO CABLES Arm Yannis 420.5 Litz+ SpeakerPC Tripple C+WBT-0681 Ag IC Oyaide FTVS-510 AgWBT 0110Ag Phonostages Paradise(4 Box Mega-Modded) / Croft Musicmaker



  2. #42
    Join Date: Nov 2010

    Location: Yorkshire

    Posts: 9,302
    I'm Andrew.

    Default ndix

    Pt XIV - Bendix redbase 5691 - Or in other words the legendary rebadged RCA redbase

    This valve is legendary and a very very special version of the 6SL7GT everything about it has been massively over spec'd and it shows! I've not exhausted teh list of 6SL7GT valves out there but I was getting a little bored and decided to try something rare and exotic. This valve has met all my expectations and surpassed them. I'd done a lot of reading around the 6SL7GT and this variety was supposed to be at the top of the tree. My favourite 6SL7GT's have always (so far) been manufactured by Tung Sol. I've tried the black base RCA 6SL7GT and found it to be ok, not the best in the world but certainly not the worst. The Bendix seems to add a little gain and the soundstage is truly wide, cohesive, and everything that makes the best Tung Sol valves sound so good. The Bendix majors on micro-detail and really really digs deep into the groove of any vinyl recording and produces more detail than I have ever heard before from any valve that I have tried. This valve has gone straight to the top of the pile and has replaced the Tung Sol black bottles as my new reference valve.

    DSCN3604.jpg

    So, the shoot out now looks like this

    1. Bendix 5691 (Red Base) 9.75/10
    2. Tung Sol 6S7GT (Black Bottle) 9.6/10
    3. Tung Sol 6SL7GT (Orange base) 9.5/10
    4. Mullard 6SL7GT (Black base) 9.25/10
    4.= Ken Rad 6SL7GT (Black Base) VT229 9.25/10
    5. Tung Sol 6SL7GT VT229 (Black bottle) 9.1/10
    6. General Electric GSL7GT (Black base 1970's) 8.75 / 10
    7. Slyvania 6SL7GT black base 7/10
    8. Brimar 6SL7GT (black base) 6.25/10
    9. Reflektor black base 70's version 5/10

    Next time something from pentalabs I think....
    SS
    CD Teac VRDS25X(Audiotuned) DECK 1210 Mat Crystal Audio Mods MN Base/Bearing/Platter+Ebony armboard Feet Isonoe PSU Paul Hynes SR7EHD-27XL/DCSXL Ag DC lead/3 Stage Regs/Recap PCB+No Pitch/Strobe/Light ARM SME V(Kondo Ag Rewire&Tags) MC Cadenza Black FGS CABLES Arm Yannis SPD-4 IC Yannis 222 Litz+Ag bullets Power WAR PRE ATC SCA2 SPEAKERS ATC 50ASL STANDS Atacama PHONO Sugden Masterclass PA4 SUT Ortofon ST80SE POWER PSAudio P10

    VALVE
    PRE
    Croft Epoch(Modded) AMP Sondex S100 (Modded) SPEAKERS Tannoy 15"MG+RFC Warwick cabs+ Ref XO + Batpure supertweeters DECK Garrard 301 Mat Teunto Bearings 401(Bastin) Plinth Bamboo Arms 3009/3012 PSU Eagle+Tachometer MC Ag Meister II/FGS + Ortofon SPU MONO CABLES Arm Yannis 420.5 Litz+ SpeakerPC Tripple C+WBT-0681 Ag IC Oyaide FTVS-510 AgWBT 0110Ag Phonostages Paradise(4 Box Mega-Modded) / Croft Musicmaker



  3. #43
    Join Date: Nov 2010

    Location: Yorkshire

    Posts: 9,302
    I'm Andrew.

    Default

    Pt VX - The future...

    I've tried many valves now and I think I've come to the conclusion that RCA and Tung Sol probably produced the best 6SL7 valve. I've yet to try everything and there are still one or two that I'd like to try, these being the Brown / Black base Mullard ECC35's, the 5 holed Melz, and maybe some of the more weird and wonderful VT229's kicking around. I may even try some of the newer 6SL7's doing the rounds at the moment and perhaps this could another area of future research. So, for the time being this thread will be taking a break.
    SS
    CD Teac VRDS25X(Audiotuned) DECK 1210 Mat Crystal Audio Mods MN Base/Bearing/Platter+Ebony armboard Feet Isonoe PSU Paul Hynes SR7EHD-27XL/DCSXL Ag DC lead/3 Stage Regs/Recap PCB+No Pitch/Strobe/Light ARM SME V(Kondo Ag Rewire&Tags) MC Cadenza Black FGS CABLES Arm Yannis SPD-4 IC Yannis 222 Litz+Ag bullets Power WAR PRE ATC SCA2 SPEAKERS ATC 50ASL STANDS Atacama PHONO Sugden Masterclass PA4 SUT Ortofon ST80SE POWER PSAudio P10

    VALVE
    PRE
    Croft Epoch(Modded) AMP Sondex S100 (Modded) SPEAKERS Tannoy 15"MG+RFC Warwick cabs+ Ref XO + Batpure supertweeters DECK Garrard 301 Mat Teunto Bearings 401(Bastin) Plinth Bamboo Arms 3009/3012 PSU Eagle+Tachometer MC Ag Meister II/FGS + Ortofon SPU MONO CABLES Arm Yannis 420.5 Litz+ SpeakerPC Tripple C+WBT-0681 Ag IC Oyaide FTVS-510 AgWBT 0110Ag Phonostages Paradise(4 Box Mega-Modded) / Croft Musicmaker



  4. #44
    Join Date: Nov 2010

    Location: Yorkshire

    Posts: 9,302
    I'm Andrew.

    Default

    Oh dear looks like the tube rolling bug has struck again.
    SS
    CD Teac VRDS25X(Audiotuned) DECK 1210 Mat Crystal Audio Mods MN Base/Bearing/Platter+Ebony armboard Feet Isonoe PSU Paul Hynes SR7EHD-27XL/DCSXL Ag DC lead/3 Stage Regs/Recap PCB+No Pitch/Strobe/Light ARM SME V(Kondo Ag Rewire&Tags) MC Cadenza Black FGS CABLES Arm Yannis SPD-4 IC Yannis 222 Litz+Ag bullets Power WAR PRE ATC SCA2 SPEAKERS ATC 50ASL STANDS Atacama PHONO Sugden Masterclass PA4 SUT Ortofon ST80SE POWER PSAudio P10

    VALVE
    PRE
    Croft Epoch(Modded) AMP Sondex S100 (Modded) SPEAKERS Tannoy 15"MG+RFC Warwick cabs+ Ref XO + Batpure supertweeters DECK Garrard 301 Mat Teunto Bearings 401(Bastin) Plinth Bamboo Arms 3009/3012 PSU Eagle+Tachometer MC Ag Meister II/FGS + Ortofon SPU MONO CABLES Arm Yannis 420.5 Litz+ SpeakerPC Tripple C+WBT-0681 Ag IC Oyaide FTVS-510 AgWBT 0110Ag Phonostages Paradise(4 Box Mega-Modded) / Croft Musicmaker



  5. #45
    Join Date: Sep 2014

    Location: brighton uk.

    Posts: 4,737
    I'm jamie.

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    lol have you tried any 6F8G's? no going back for me since hearing smoked tungsol's
    My System
    John Wood KT88 Amp.
    Paradise Phono Stage
    Sony TTS-8000 Turntable.
    PMAT-1010 MK6 Tonearm.
    Ortofon Cadenza Bronze
    Sony X555ES Cd Player
    Yamaha NS1000m Speakers

  6. #46
    Join Date: Nov 2010

    Location: Yorkshire

    Posts: 9,302
    I'm Andrew.

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    6F8G's?

    No! Please don't send me down a rabbit hole!!
    SS
    CD Teac VRDS25X(Audiotuned) DECK 1210 Mat Crystal Audio Mods MN Base/Bearing/Platter+Ebony armboard Feet Isonoe PSU Paul Hynes SR7EHD-27XL/DCSXL Ag DC lead/3 Stage Regs/Recap PCB+No Pitch/Strobe/Light ARM SME V(Kondo Ag Rewire&Tags) MC Cadenza Black FGS CABLES Arm Yannis SPD-4 IC Yannis 222 Litz+Ag bullets Power WAR PRE ATC SCA2 SPEAKERS ATC 50ASL STANDS Atacama PHONO Sugden Masterclass PA4 SUT Ortofon ST80SE POWER PSAudio P10

    VALVE
    PRE
    Croft Epoch(Modded) AMP Sondex S100 (Modded) SPEAKERS Tannoy 15"MG+RFC Warwick cabs+ Ref XO + Batpure supertweeters DECK Garrard 301 Mat Teunto Bearings 401(Bastin) Plinth Bamboo Arms 3009/3012 PSU Eagle+Tachometer MC Ag Meister II/FGS + Ortofon SPU MONO CABLES Arm Yannis 420.5 Litz+ SpeakerPC Tripple C+WBT-0681 Ag IC Oyaide FTVS-510 AgWBT 0110Ag Phonostages Paradise(4 Box Mega-Modded) / Croft Musicmaker



  7. #47
    Join Date: Oct 2011

    Location: Glasgow/Italy

    Posts: 866
    I'm Drew.

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    Quote Originally Posted by karma67 View Post
    lol have you tried any 6F8G's? no going back for me since hearing smoked tungsol's
    Different tube Jamie, though sometimes it can be used in place of 6SL7s.. The 6f8g is a direct equivalent of the 6SN7 and has lower gain than the 6SL7:-) A marvellous tube it is too!

  8. #48
    Join Date: Oct 2011

    Location: Glasgow/Italy

    Posts: 866
    I'm Drew.

    Default

    However, re 6SL7 types, IME the 1940s black glass Tung Sol 6SU7GTY is the ultimate...

  9. #49
    Join Date: Sep 2014

    Location: brighton uk.

    Posts: 4,737
    I'm jamie.

    Default

    Quote Originally Posted by da2222 View Post
    Different tube Jamie, though sometimes it can be used in place of 6SL7s.. The 6f8g is a direct equivalent of the 6SN7 and has lower gain than the 6SL7:-) A marvellous tube it is too!
    yep my mistake,your right.
    My System
    John Wood KT88 Amp.
    Paradise Phono Stage
    Sony TTS-8000 Turntable.
    PMAT-1010 MK6 Tonearm.
    Ortofon Cadenza Bronze
    Sony X555ES Cd Player
    Yamaha NS1000m Speakers

  10. #50
    Join Date: Nov 2010

    Location: Yorkshire

    Posts: 9,302
    I'm Andrew.

    Default

    Phew dodged a bullet!
    SS
    CD Teac VRDS25X(Audiotuned) DECK 1210 Mat Crystal Audio Mods MN Base/Bearing/Platter+Ebony armboard Feet Isonoe PSU Paul Hynes SR7EHD-27XL/DCSXL Ag DC lead/3 Stage Regs/Recap PCB+No Pitch/Strobe/Light ARM SME V(Kondo Ag Rewire&Tags) MC Cadenza Black FGS CABLES Arm Yannis SPD-4 IC Yannis 222 Litz+Ag bullets Power WAR PRE ATC SCA2 SPEAKERS ATC 50ASL STANDS Atacama PHONO Sugden Masterclass PA4 SUT Ortofon ST80SE POWER PSAudio P10

    VALVE
    PRE
    Croft Epoch(Modded) AMP Sondex S100 (Modded) SPEAKERS Tannoy 15"MG+RFC Warwick cabs+ Ref XO + Batpure supertweeters DECK Garrard 301 Mat Teunto Bearings 401(Bastin) Plinth Bamboo Arms 3009/3012 PSU Eagle+Tachometer MC Ag Meister II/FGS + Ortofon SPU MONO CABLES Arm Yannis 420.5 Litz+ SpeakerPC Tripple C+WBT-0681 Ag IC Oyaide FTVS-510 AgWBT 0110Ag Phonostages Paradise(4 Box Mega-Modded) / Croft Musicmaker



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