Preamps

Discussion in 'Preamps' started by sphinxvc, Sep 21, 2016.

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  1. Turdski

    Turdski Rando

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    I'm in the same boat. I have a lot of really fantastic, quiet, detailed, and neutralish 6922-equivalent tubes, and I can't really be bothered to venture down yet another tube rollin' rabbit/black hole with the 6SN7s. I could live without a remote. Tubes might add a bit of magic that the second-hand Ayre K-1xe preamp I'm eyeing may lack, ever so slightly. I've read a couple of reports now of Mjolnir 2 not being as dynamic, or imaging as well, as the Freya with great tubes. Having said that, it sounds as though a wee bit of transparency is lost through the tube stage of the Freya. And finally, for the foreseeable future, our music listenin' room and movie watching room will be combined, so for home theatre duties, I'd be burning through costly tubes on the Freya, as it doesn't otherwise convert single ended to balanced unless the tube buffer is on. I realize it lacks a proper pass through feature, but I plan to manually get around that. It sounds like the Freya will deliver more in the way of hiss by doing this. Being in Canada, it's costlier with the dollar here, added shipping, and duty and brokerage.
     
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  2. sphinxvc

    sphinxvc Gear Master East

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    To my surprise, I was able to get what I would call "better resolution" out of Freya's active mode this weekend (compared to passive). Switched to a complement of 2x NOS RCA 6SN7s from the 1940s or 1950s (can't recall) for the gain stage, and stock tubes for the output stage (to keep costs down).

    I would say the active mode is now presenting just as much information as the passive, but in addition it's also making it easier to delineate concurrent 'lines' of music. Standard tone benefits of active mode still apply too. Win-win I'd say.
     
    Last edited: Feb 21, 2017
  3. svperstar

    svperstar Rando

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  4. Daveheart

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    That'd be rather inappropriate as a preamp for home audio use. It's meant to take mic level preamps (measured in mV) rather than line level inputs (measured in Volts). All of the outputs are balanced as well. Essentially it's for a 100% different application.

    A Schiit Saga would be more appropriate (though not particularly tubey). There are also plenty of tube buffers out there or used full function or line preamps that would work depending upon how much "tube sound" you want. Really the easiest rec would be to just replaced the Asgard 2 with a Lyr 2 or something of that ilk.
     
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  5. Daveheart

    Daveheart Friend

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    If anyone is in the market for a truly full function vintage preamp, keep your eye out for a good deal on a Sansui CA-2000. They were packed with utility and have possibly the most baddass volume knob ever made. It's not quite as transparent as the Audio Research and Modwright that I've owned, but I think the only remote function you could ask for in a modern update would a mute function. The knobs and switches are worth the effort of getting out of your seat.

    [​IMG]
     
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  6. bilboda

    bilboda Acquaintance

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    Excellent thread and info. I was looking for a solution for my setup. Mimby and HD Radio to SYS to Ember HP amp used as pre to feed Adcom GFA 535.

    My problems were the Ember would have to be on all day. I work from home, listening to music, radio,etc. And I was going thru 2 volume controls as well
    And to cap things off, the Ember's pot has volume mismatch at low levels. I would attenuate at the SYS to get a higher setting on the Ember.

    Tape out is common on active preamps but not so common on passives. I found what I was looking for on Ebay here http://www.ebay.com/itm/271214681553
    He has a decent variety of passives. Now I feed my sources to the pre and use tape out to my Ember for headphone listening.
    It's solidly built, sounds better than the previous setup, soundstage is deeper, wider and more centered. pics
    [​IMG]
    [​IMG]
     
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  7. Dino

    Dino Friend

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    I've had my eye on that exact unit, @bilboda . Great to get a user impression on it!
     
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