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Granger SBVA-300

Discussion in 'Amps and Cabs [BG]' started by sickest beast, Oct 22, 2009.


  1. RickenBoogie

    RickenBoogie

    Jul 22, 2007
    Dallas, TX
    I like the blue glow. Looks like a great contender in the all tube 300 watter catagory. How much$$??
     
  2. says on the site $1799... which is not bad at all.

    there is a demo on youtube, looks like this amp has some features.
     
  3. Well, it's certainly very pretty. Seems to sound pretty good, too, lol.

    Seems like it might be very expensive, though.
     
  4. bazzanderson

    bazzanderson

    Oct 7, 2002
    Austin, TX
    1799.00, 300 tube watts and 55lbs?! Almost too good to be true.

     
  5. Yeah, I posted before I saw sickest beast's post.

    1799 sounds pretty good for 300 watts tube, especially given that 55 pounds really is pretty light for a big tube amp.
     
  6. From the website:

    "The circuit design was created by the late Ted A. Weber and borrows from the SVT and amps of that era, but with modern component reliability."

    So it's a dressed up Weber design?
     
  7. Interesting that it has an EL34 in the preamp.
     
  8. bump
     
  9. Joe Gress

    Joe Gress

    Dec 22, 2005
    Pueblo, CO
    Sounds pretty good. Looks pretty cheesy.
     
  10. MIJ-VI

    MIJ-VI Banned Supporting Member

    Jan 12, 2009
    Granger SBVA-300 features:

    * Handcrafted/handwired in USA :)
    * Output (RMS): 300 watts :)
    * Preamp valves: JJ ECC81S, ECC83S, EL34 <-- :eek:
    * Power amp valves: JJ KT88 x 6 :)
    * UF5408 diode (4) rectification
    * Mains power switch
    * Standby switch
    * High and Low impedance inputs
    * Presence control
    * Bass, Midrange, Treble controls
    * 6-position Mid-shift (frequency) switch :)
    * Volume (Gain) control
    * Master Volume control
    * Dedicated speaker output jacks (2) 2, (2) 4, (1) 8 ohm :)
    * XLR Direct out with level adjust control :)
    * Tuner out jack :)
    * Tube buffered effects loop :)
    * Selectable Bias/Plate voltage LCD display and (6) adjustment pots on rear panel :)
    * Clear Plexiglas front baffle illuminated with CCFT :p
    * 16 gauge IEC power cable
    * Dimensions: 23"W x 9"H x 9"D
    * Weight: 55 lbs. :hyper:
     
  11. Yeah, I felt it was strange, too. I immediately thought "wait... aren't EL34's guitar power tubes?"
     
  12. looks like a hughes and kettner triaxis
     
  13. ??? last bump for those who haven't seen this yet.
     
  14. I still want someone with more knowledge than me to explain why there seems to be a power tube in the preamp.
     
  15. johnk_10

    johnk_10 vintage bass nut Supporting Member Commercial User

    Feb 16, 2008
    Thousand Oaks, CA
    John K Custom Basses
    they're probably using the EL34 as a driver for the output tubes like they used a 6V6 on the Fender 300PS and a 6L6 on the Fender 400PS. so its really not a preamp or a power amp tube.
     
  16. What are the advantages/disadvantages/effects of using a tube normally used in the power section as a driver tube in the preamp section? Does it have a notable impact on the sound? Could one conceivably use a 6550/KT88 in such a position? What would that do?
     
  17. using a kt88 would be overkill in that position unless you were using bigger valves like 803s.

    they use a small transformer to provide the phase splitting and the el34 drives it. generally its going to add el34 tonal characteristics (lots of mid range) and the frequency response of the amp is going to be affected by the quality of the coupling transformer which is what worries me about this design!
     
  18. Would it have similar tonal characteristics to a head with EL34's in the power amp section?

    And while using a KT88 might be overkill... there's no kill like overkill! :)

    And the tone from the clips sounded pretty good, though I was disappointed that there weren't any sound samples with it driven hard.
     
  19. johnk_10

    johnk_10 vintage bass nut Supporting Member Commercial User

    Feb 16, 2008
    Thousand Oaks, CA
    John K Custom Basses
    not really, the power tubes are responsible for that. a Fender 300PS doesn't sound like a 6v6 and the 400PS doesn't sound like a 6L6.
     

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