1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.

    Dismiss Notice

Darkvoice 336i & 336SE Tuberolling PartII

Discussion in 'Headphone Amps (full-size)' started by heatfan12, Jul 31, 2008.
First
 
Back
141 142 143 144 145 146 147 148 149 150
152 153 154 155 156 157 158 159 160 161
Next
 
Last
  1. JKDJedi
    They have nostalgic value so there's that, and remember these are in the 40's and a decade later, maybe the tube tech got better? Anyway, In fairness to GGILLIES review, he's not the first to review them as such. Sylvanias VT-231 are bettered by the bad boys the same. To find a VT-231 that still shines to this day will be a three figure buy, some debate it's the round plates Tung Sol.
     
    Slade01 likes this.
  2. sennfan83261
    Trying out my my recent acquisitions, National Union 6F8G and Sylvania 7236:

    [​IMG]
     
    DarkDrummer, ggillies and JKDJedi like this.
  3. JKDJedi
    DUDE! So Clean! The wire adapter is for? I've seen this in my coworkers old tubed radio (1937) he has in his Bomber Lowrider, He won't let me pull the tubes out..lol. (it doesnt work and all dusted) But your set up looks Righteous!! :beerchug::)
     
    Last edited: Aug 3, 2019
    DarkDrummer and sennfan83261 like this.
  4. sennfan83261
    It is a 6F8G/6C8G to 6SN7 adapter to allow one to use 6F8G (also designated as VT-99) and 6C8G tubes in their 6SN7 socket* (search for "6f8g 6c8g 6sn7 adapter" on ebay, without quotes). The wire is topped by a plate cap that connects to a triode grid (see spec sheet below). Do note that 6C8G tubes have close to double the amplification factor to 6SN7/6F8G tubes, so the 6C8G will be louder than the other two. This will be a factor for those like me who did the Fitz-mod on their Darkvoice amps. Brownstd here on head-fi turned me onto them here (see also that user's massdrop post below for more of their recommendations): https://www.head-fi.org/threads/dar...erolling-partii.348833/page-136#post-14874572

    http://www.r-type.org/exhib/aaq0423.htm
    https://www.radiomuseum.org/tubes/tube_6f8g.html
    https://drop.com/buy/dark-voice-366se/talk/2391797

    *As tempting it may be, please do not use 6F8G/6C8G tubes as a drop-in replacement for power tubes like 421A/5998/6080/6AS7G/7236/etc. I just saw post on the Bottlehead forums from someone who did just that, smh.
     
    Last edited: Aug 4, 2019
    JKDJedi likes this.
  5. JKDJedi
    Talk about talking pieces... This is it! So these came out before the 6SN7. What's your in intial impression on sound?@sennfan83261 did a quick search on the tubes mentioned and wow...holy price crunch... These are highly sought after!
     
    Last edited: Aug 4, 2019
  6. JKDJedi
    SMH.. Just noticed the adapter is coming in from CHINA o.O Expected delivery.. 29th of this month LMAO.. :D:k701smile::ksc75smile::gs1000smile:
     
    Slade01 likes this.
  7. Slade01
    Chi-Fi from China. 3-6 weeks? Sounds about right... :weary:
     
  8. JKDJedi
    Lol... I have a few tubes coming in tomorrow, probably should wait before pulling the trigger on that nice CF8G tube. Looks badass!
     
  9. sennfan83261
    I only have two 6F8G's at the moment (National Union and an RCA grey glass) and many more 6C8G's. Listening to the combo below (National Union 6F8G + RCA 6AS7G) on my HD6XX, the vocals on Mandolin Orange's "From Now On" (YT link) are still very sweet, kick drums on Maison Neuve's "Victor" (YT) still have a nice thump, and sub-bass is still present on Spacetime Continuum's "Kairo" (YT, 5 minutes in), extremely close to that from my THX AAA 789 (SE output, Gain II), while presenting the characteristic tube sound for these cans [note: my sources of the above are CD FLAC]. As someone mentioned on the 6SN7 reference thread, the National Union tubes therein were more liquid than lush, which sounds about right with this National Union 6F8G when comes to its overall presentation (NB: I don't have any NU tubes mentioned in that 6SN7 thread to compare against, sorry). Anyways, I'm glad that I jumped in and grabbed one at a reasonable price, as NOS pairs of these go for >$100. As brownstd mentioned in their massdrop post, the cat is out of the bag for 6F8G's these days. :triportsad:

    [​IMG]
    [​IMG]
     
    Last edited: Aug 7, 2019
    Slade01 and JKDJedi like this.
  10. Slade01
    Don't you hate it when you're trying to evaluate a tube sound and then you realize that you forget you had the player's EQ turned on?
     
  11. JKDJedi
    LMAO how and what are you using that has EQs on it!!:dt880smile:
     
  12. Slade01
    So I was playing around between two power tubes - an RCA JAN 6AS7G, and the famous Tung Sol 7236 which I got recently, and figured I needed these as the cornerstones. I've only owned a Sylvania 6080 and Svetlana Winged Cs up to this point. So I was continuing where I left off with the CBS 6SN7GTB from my previous posts -- so far its sounding as good as the Westinghouse Reliatron. I'm not surprised at this, since the construction seems to be virtually identical. But I haven't dug around to see if they are made the same tube and just re-branded or not. Aside from this, got a GE 6SN7GTB ('64) which I'm burning in and hope to put in some time with that also.

    20190806_183534.jpg 20190806_183828.jpg 20190806_183705.jpg
     
    JKDJedi likes this.
  13. JKDJedi
    Nice group of tubes there, and heck yeah if that sounds like the Westinghouse ..huge SCORE! JAN RCA looks sick, (meaning awesome) and GTB are among my favorites, super quick warm up time on those. Seems like the Tung Sol 7236 is this threads favorite power tube! I got a few tubes in and just one more later next week, and thats it for me for a few months.. (why don't I believe myself) first batch not to impressed with SENN warned me about them, hate it when he's right, :D dam Sylvania WGTA, problem is they're the 60's batch.. 50's are better is what I read, to forward for my tastes, your the one that got me interested in these GTA and GTB tubes..lol, not blaming you. So the one that just came in today is really beautiful and hope it sounds as good. 1955 Raytheon WGT.
    2019-08-06 20.48.12.jpg
     
  14. Slade01
    The RCA 6AS7 that I got was really really clean...mint shape, even I was shocked when I got it. Its seems to be a great all around tube...plays great with what i've thrown at it. But i'm telling you hands down the tung sol 7236 is next level. It just elevates the driver tube. I mean the CBS and Westinghouse tubes, becoming my favorite right now...they sounded good...and with the tung sol...its that much better. Better resolution, extracts details better...just adds that much more magic. SENN is always on point as well. Yeah, I was looking at Sylvania WGTAs but yeah, need to hone in on the 50s..but I think those are a pretty penny. No worries, you got me on the Westinghouse kick, and i'm keeping an eye out for that Admiral branded tube as well. The staggered hole plate configuration of that one intrigues me. Let us know how that Raytheon is. That brown base looks really cool. The 50s seem to be a sweet spot for sure.
     
    JKDJedi likes this.
  15. 19844
    I use hifiman sundara and I interesting in darkvoice 336se. Is it ok to pair sundara with darkvoice? I just worry about impedance hum hiss or noice.

    Sundara spec is :
    Impedance @ 1kHz: 37 ohms
    Sennsitivity: 94 dB
     
First
 
Back
141 142 143 144 145 146 147 148 149 150
152 153 154 155 156 157 158 159 160 161
Next
 
Last

Share This Page