Lyr 3 Discussion Thread

Discussion in 'Headphone Amplifiers and Combo (DAC/Amp) Units' started by neogeosnk, Mar 20, 2018.

  1. Taverius

    Taverius Smells like sausages

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    To put a custom filter with D-S you have to reimplement everything from scratch, pretty sure?

    If you use an off-the-shelf solution like the AKM you're limited to the filters already on the chip.

    Some of them might be tuneable to some degree and your analogue stage is what mainly makes a difference.

    Mike isn't terribly interested in a custom D-S solution ...
     
  2. bengo

    bengo Friend

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    I'm sorry but I think you are wrong here. Even with a vanilla Windows PC, you can upsample (= "custom filter") although in this example it probably won't sound anything special. You could also convert to DSD with something like HQPlayer, assuming the chip and the DAC implementation support DSD.

    Check out Torq's comments on the Linn stuff. Linn uses a custom filter (implemented in FPGA) with the AK4497.
     
  3. Grahad2

    Grahad2 Red eyes from too much anime

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    The only reason I'm asking that is because (and I'm aware of the many replies Mike has made wrt DS)

    A) Superburrito is (so far) reserved for their multibit, and that effectively oversamples the input to 3XXkHz
    B) littlebit D/S like the AKMs oversamples to the MHz range, because that's how they work
    C) Marv mentioned Schiit filter wrt the 4490 G2 and I was wondering if they've plans to do something different since the el cheapo (like me*) are still stuck with their DS implementations.
    and mainly because D) It would be interesting

    *[I'm technically saving for something better, but till then I'm still using the 4490 G1 in the Jot.]
     
  4. Pillars

    Pillars Embarrassment to Colorado crew

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    I believe the superburrito only exists due to the size limitation in the Bifrost/Modi.
     
    Last edited: Apr 17, 2018
  5. Ice-man

    Ice-man Friend

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    Yes, the lyr 3 is now my favorite amp under $1. The amp just does so many things right. Tone represented in the mid range is rich and true, with vocals coming across both delicately detailed and powerful when called for. The lyr 3 just nails the mid range. This is an impressively neutral amp with just the right amount of warmth and wetness from the tube of your choice.

    Speaking of tubes, I really like the new production Tung Sol. Now that I've had some extended time with it for comparison, I'll call it mildly U shaped. This is not a bad thing and this tube plays out very well with the hd650. But now that had the Ken Rad vt-231 mil spec, I'm not sure that I could ever go back to the TS. It seems that the KR vt-231 was the final piece to the puzzle and unlocked the last 10-15% of potential in the amp. I am seriously considering buying another KR as a backup. I also received another very nice NOS tube but I have no inclination to even roll it in yet. Maybe later in the week.

    Of course I'm speaking in terms of my preferences which may differ from yours. Over the last few years I've gravitated more and more towards neutral with maybe a little extra warmth. So what does that make me....a neutral head?

    The gain (switch) is implemented very well. Often times a gain switch gives me too much, but the lyr 3 is just where I'd want it. I have a good bit of hi-res recordings and I often apply a little EQ which makes for a much quieter sound coming from the amp. The high gain of the lyr gets me back to that happy medium volume with good swing to use in both directions.

    This amp does not get nearly as hot as previous version or the mjo2. I like that.

    All this leaves me pondering what I'd change about the lyr 3 or what schiit would want to tweak and improve for lyr 4. Maybe balanced? Nah, they've got mjo2 for that. And I care less about balanced connectors these days. Dual tube solution? Nah, I like the single tube saving me cash and I think the tube type choice is a good one. I wish that they had done a full AL chassis and that it was offered in black. But that's about it. This is a great amp from the boys at Schiit and my favorite from them to date.

    [​IMG]



    [​IMG]
     
  6. purr1n

    purr1n Desire for betterer is endless.

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    ^ This.

    Seems pointless putting a Schiit filter on the DS chips since they come with their own internal filters before they push the shit into one-bit or hybrid one-bit at a super duper higher sample rate the mHz region. With the filters, DS integrators and other crap, we have no idea what the output might actually be.

    Would be an interesting experiment to see if the effects of the Schiit filter, or how much of the effects survive a DS DA conversion.
     
    Last edited: Apr 17, 2018
  7. Cspirou

    Cspirou They call me Sparky

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    You are already doing it. The preout is just the headphone out with the addition of 75ohm resistors. While 9w sounds scary, its only 1mw with the 50kohm input impedance of a powered monitor. Going directly from the headphone out won't change anything.
     
  8. Cspirou

    Cspirou They call me Sparky

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    Huh, can't edit my posts for some reason. Guess I'll just double-post

    From what I understand the multibit filter is a closed-form filter which preserves the original samples. To retain this accuracy you need the R2R chips because D/S chips only give an approximation. There's a big older thread where Ultrabike talks about applying the Burritofilter to a DS chip

    http://www.superbestaudiofriends.or...gital-filter-techno-discussion.193/#post-4201
     
  9. Occam

    Occam New

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    In regards to the pop with the protection circuit, I just got a Lyr 3 in today and it does it with both the Tung-Sol and the LISST. Also tried it with the LISST on a furman power conditioner and got the same result. If this is also happening with the LISST I not sure micro-phonic tubes would be the cause. My amp does not have an option card installed.

    On a side note I have been really enjoying this amp so far. (I will post in the introduction section when I get a chance.)

    Edit: provided more info.
     
  10. Turdski

    Turdski New

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    Both my Vali 2 and Lyr 2 made that pop after start up, with several different tubes. I once posted about it in the Schiit Happened thread, after someone else has been posting about having that issue, and Jason deleted my post there (awesome!). I'm not surprised to hear the Lyr 3 does this as well. It probably won't stop me from buying one though. A turbo-charged Vali 2? Yes please.
     
  11. atomicbob

    atomicbob dScope Yoda

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    Since we are offering data points here are mine.
    Lyr3 - no pops - with Tung Sol provided, Shuguang CV181-Z and PS-Vane 6SN7-SE
    Vali2 - no pops - with 6BZ7 provided, Ultron PCC88 7DJ8 (thank-you @Changeling ), EH 6CG7
    Headphones, HD6x0, HD800, Focal Clear
    No pops, none.
     
  12. allegro

    allegro Friend

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    My Vali 2 with stock 6BZ7 has always emitted a pop through my HD800S phones about 10 seconds after being turned on. This is with volume control at zero. Not that loud so no problem, just considered it normal.
     
  13. skank

    skank Friend

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    My Vali 2 (~2 months old) with Tesla tube has (to me) a very loud pop about 30 seconds after power on even with the volume all the way down. Loud enough that I unplug my phones (HD650) before initiating the power up sequence.
     
  14. Darren G

    Darren G Friend

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    My Mojo2 makes the loud pop as well, various tubes, though I've not tried it with LISST in a long while. What is interesting is that it wasn't an issue when I first received it. A few months later I noticed it sporadically, then always. Like some others, I now plug in my HPs after I hear the relay click.
     
  15. Ice-man

    Ice-man Friend

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    The pop is an annoyance to me because of the way that I listen. I might get an hour in the morning, sometimes an short session at lunch and then maybe two sessions to listen in the late evening. That's a lot of plugging and unplugging.
     
  16. skank

    skank Friend

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    With my Vali 2 I don't hear any relay clicks (not like the Modi Multibit when it's switching inputs anyway).
     
  17. dmckean44

    dmckean44 In a Sherwood S6040CP relationship

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    You should be turning it on in the morning and turning it off late in the evening. You're shortening tube life but turning it on that many times a day.
     
  18. msommers

    msommers High on Epipens

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    Shortening the life how quickly though? You'd really have to weigh the cost differences of shorter tube life + less electricity vs. longer tube life + more electricity.
     
  19. dmckean44

    dmckean44 In a Sherwood S6040CP relationship

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    When it comes to electricity, most people are on tiered plans. You don't pay anything more for electricty until you use enough to enter the next tier. It's unlikely something small like Lyr 3 would bump you into the next tier. Running Vidar all day everyday might, and having waffles for breakfast everyday or blow drying your hair everyday definately will.
     
  20. Biodegraded

    Biodegraded Friend

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    @msommers is thinking in Albertan. Here we pay per electron.
     

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