Vac 200iq tube rolling question
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  1. #1
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    Vac 200iq tube rolling question

    I had some RCA 6SN7 tubes left over from some Headphone tube amps i owned and changed out the stock tubes. They sounded quite nice perhaps a little clearer. Now I’m getting wanting to try some different Kt88 and have been looking at Psvane KT88-TII and at their other offering the new Treasure KT88-CZ Cobalt blue tubes.
    Anyone try them yet in their amps? Any opinions?
    I would also like to sometime try KT150 tubes but some folks opine that for them to sound good the amp should be designed specifically for that tube so I’m not sure I want to spend good money on them.
    Or putting it another way do you think because the the 200iq is not specific for kt150s does it sound as good with them as those that are like the Conrad-Johnson’s and Audio Research?
    Larry


    Lumin U1
    Chord Dave Dac
    Vac Master Preamp
    Vac 200IQ Amp
    Magico S3 Mk2 in Mcast Pewter
    Denali 6000S
    Ansuz and MIT cabling
    Timbernation walnut racks

  2. #2
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    Re: Vac 200iq tube rolling question

    I liked both the RCA and Sylvania 6SN7’s in the 200iQ’s. I thought the RCA’s a touch richer, the Sylvania’s a touch brighter. Different flavors for different tastes. My dealer prefers Sylvania’s. I prefer RCA’s.

    I use the Gold Lion KT88’s. I thought that the PSvane KT-88 T-II were a bit too rich and thick for my taste. I had RCA 6SN7’s in the amps when I tried the PSvanes. I suspect the PSvanes would match better with the Sylvania’s but I didn’t try that combination.

    If you try the newer Treasures, let us know what you think about them.

    I asked Kevin about using KT150’s, and while KT150’s can be used in the 200iQ’s, he prefers the more balanced sound of KT88’s. He said I could use KT150’s, but wouldn’t get any more power from them, so it really boils down to which tube sonics you prefer.
    Analog source: AMG Viella 12; Ortofon Anna cartridge
    Digital source: Totaldac d1-seven DAC, Totaldac d1-server with Gigafilter
    Pre amp: VAC Master with phono
    Phonostage: ​Constellation Andromeda
    Amps: VAC 200iQ monoblocks
    Speakers: Magico M3 with MPods
    Cables: Synergistic Research Galileo
    Power products: Synergistic Research Power Cell 12 UEF and Transporter Ultra. Galileo power cords.

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  4. #3
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    Re: Vac 200iq tube rolling question

    Incoming tubes: KT120’s .........hope curiosity doesn’t kill the Vac.....lol
    I have been wanting to try these but it will take some major goods to unseat The Kt150’s I’m afraid.
    I have been acquiring all sorts of 6SN7s and swapping in and out. Good news bad news: no clear winners for me..they all sound dang good. Ah do luv the Sylvanias mids and the Ken-Rad’s bass....
    Larry


    Lumin U1
    Chord Dave Dac
    Vac Master Preamp
    Vac 200IQ Amp
    Magico S3 Mk2 in Mcast Pewter
    Denali 6000S
    Ansuz and MIT cabling
    Timbernation walnut racks

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  6. #4
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    Re: Vac 200iq tube rolling question

    hope the 120's are everything your wishing for.
    As for 6sn7's, Generally speaking RCA's are warm, Sylvania's are bigger and bolder.
    Many different flavors out there. Including the 5692's.
    My all time favorite is a 6F8G on an adapter. RCA's or Tung-Sol's are my top choices.
    I have a theory about the size of the tube bottle. In my findings the larger the bottle the more spacial a presentation it has. Thus the 6F8G's sound more 3D than the same brand 6SN7,
    This holds true for any of the tubes I have tried in both the 6SN7 family and others.
    The "GT's" are the smaller more common bottle size vs the "G" series which were the older coke bottle style.
    These are my observations in my equipment. YMMV.
    My System:
    A trusty old Pioneer PD-65 as a Transport, Lumin A-1, a Merrill Heirloom T.T. as sources. A Lampizator DAC to PAD Cables to a SP-14 Tubed PreAmp, Pass XA30.5 , Fusion speaker cables, AudioKinesis Zephryn 46 Speakers. pair Rythmik F-12 subs, EP2050, Kaplan Power cables, Hydra power conditioner, Two dedicated 20Amp power lines. DIY corner traps and Acoustic Geometry Curves for room treatment.

  7. #5
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    Re: Vac 200iq tube rolling question

    I wonder if using an adapter with one of these tubes “safe” with Vac amps?
    Larry


    Lumin U1
    Chord Dave Dac
    Vac Master Preamp
    Vac 200IQ Amp
    Magico S3 Mk2 in Mcast Pewter
    Denali 6000S
    Ansuz and MIT cabling
    Timbernation walnut racks

  8. #6
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    Re: Vac 200iq tube rolling question

    Yep, safe with any amp that uses 6SN7's
    The 6F8g is the grandfather of the 6sn7 lineage.
    My System:
    A trusty old Pioneer PD-65 as a Transport, Lumin A-1, a Merrill Heirloom T.T. as sources. A Lampizator DAC to PAD Cables to a SP-14 Tubed PreAmp, Pass XA30.5 , Fusion speaker cables, AudioKinesis Zephryn 46 Speakers. pair Rythmik F-12 subs, EP2050, Kaplan Power cables, Hydra power conditioner, Two dedicated 20Amp power lines. DIY corner traps and Acoustic Geometry Curves for room treatment.

  9. #7
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    Re: Vac 200iq tube rolling question

    Awesome info! Thanks, more fun coming up!
    Larry


    Lumin U1
    Chord Dave Dac
    Vac Master Preamp
    Vac 200IQ Amp
    Magico S3 Mk2 in Mcast Pewter
    Denali 6000S
    Ansuz and MIT cabling
    Timbernation walnut racks

  10. #8
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    Re: Vac 200iq tube rolling question

    Why on earth would I think they would be CHEAPER than 6SN7’s lol......
    Larry


    Lumin U1
    Chord Dave Dac
    Vac Master Preamp
    Vac 200IQ Amp
    Magico S3 Mk2 in Mcast Pewter
    Denali 6000S
    Ansuz and MIT cabling
    Timbernation walnut racks

  11. #9
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    Re: Vac 200iq tube rolling question

    Well the Kt120´s burning! Nice first impressions. Very nice control of mids and highs without shrillness perhaps better than the Kt150s. Bass is strong but a little muddy compared to the Kt150s which I’m hoping will clear up with a little run time. Stage appears smaller.
    Larry


    Lumin U1
    Chord Dave Dac
    Vac Master Preamp
    Vac 200IQ Amp
    Magico S3 Mk2 in Mcast Pewter
    Denali 6000S
    Ansuz and MIT cabling
    Timbernation walnut racks

  12. #10
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    Re: Vac 200iq tube rolling question

    My tube search is almost ended. I absolutely love the sound I’m getting.
    The verdict is in. KT-150’s still my favorite. The muddy bass of the KT120’s cleaned up nicely but the stage is still small compared to the 150’s imo.
    My current lineup in my 200iq is Kt150s and 4 grey glass RCA’s 6SN7GT’s
    I have also been rolling tubes in my Vac Master Preamp. My preference by a slim margin is for the Amperex 6922 PQ over the Mullard 6922.
    I am still gonna try some 6F8G with adapters eventually though.
    Larry


    Lumin U1
    Chord Dave Dac
    Vac Master Preamp
    Vac 200IQ Amp
    Magico S3 Mk2 in Mcast Pewter
    Denali 6000S
    Ansuz and MIT cabling
    Timbernation walnut racks

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