ECP DSHA3F Ravenswood 3F

Discussion in 'Headphone Amplifiers and Combo (DAC/Amp) Units' started by purr1n, Jan 22, 2019.

  1. Carlos CPA

    Carlos CPA Almost "Made"

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    @dsavitsk, would you expect any difference in performance for the amp between having the volume turned all the way up (corresponding to about 5:00 on a clock’s face) and having the volume turned to unity gain (corresponding to about 2:30 on a clock’s face)?

    I am basing my statement regarding unity gain on prior posts in a different thread by @atomicbob. Like Bob, I have a GoldPoint balanced attenuator that I can place in the signal path between my dac and the DSHA-3F. Just trying to determine which volume level to set the amp to for optimal results.

    (Edited for grammar/syntax.)
     
    Last edited: May 25, 2020
  2. dsavitsk

    dsavitsk Friend

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    The attenuator is after the transformer, and consequently it sees the entire input signal. That's why reducing the volume prior to sending it to the amp can be beneficial.

    I don't want to overstate the benefit - these transformers are very good, and they do not really start to show much distortion until the signal is quite high. So it makes more of a difference with a really hot source.
     
  3. dsavitsk

    dsavitsk Friend

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    The difference is minimal. You would only be able to detect, or even measure a difference in an extreme case with a hot source that was just on the edge of causing issues.
     
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  4. Cspirou

    Cspirou They call me Sparky

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    For some reason I read your original statement as "inversely proportional" instead of "proportional". Doh
     
  5. dsavitsk

    dsavitsk Friend

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    I have received several emails asking about the status of the 3F. Specifically, whether it is discontinued forever. I thought I should post an update somewhere, and here seems like a reasonable place.

    The Ravenswood 3F is not discontinued. However, because the amplifier is unnecessarily complicated to assemble, and because my metal finisher closed up shop, I am working on changes to make it easier (and less expensive) to produce. The current plan is for the circuit to stay (more or less) the same, but for the casework to change. This should result in a lower price and a potentially faster delivery time.

    I am unsure of the timeline for being ready to accept orders, but I hope to have things ready as quickly as possible.
     
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  6. Rthomas

    Rthomas Friend

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    Hi Doug,

    I sent one of those messages

    Do you have an idea of how much cheaper the amp will be ( approximately of course)

    In any case I'm ready with my deposit. Not going to miss out on this again!
     
  7. dsavitsk

    dsavitsk Friend

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    I don't know, and until I work out more details about new case costs, I am hesitant to speculate too much. Suffice it to say that I am shooting for it to round down to $2K rather than up to $3K.
     
  8. Rthomas

    Rthomas Friend

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    Thanks for the response and that sounds great, will be accessible to a lot more people at that kind of price point.
     
  9. Rthomas

    Rthomas Friend

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    Hi Doug,

    Any update on this?
     
  10. dsavitsk

    dsavitsk Friend

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    Not really. Everything is pretty slow right now as everyone is short staffed, so it's taking longer than hoped.
     
  11. etherealsound

    etherealsound Rando

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    Does this possible reduction in price apply to the dsha4 as well?
     
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  12. dsavitsk

    dsavitsk Friend

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    Not likely. The reduction in cost has to do with a simplification of manufacturing that is dependent upon doing a larger run. The 4, being done one at a time, does not have that benefit.

    More importantly, my metal finisher went out of business. They were unique in that they were willing, and able, to do very small amounts of finishing and anodizing. Additionally, until the pandemic slows considerably, I have lost access to the laser I used for labeling. So until I find a replacement for all of that, one-offs are on hold.
     
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  13. dasman66

    dasman66 Self proclaimed lazy ass - friend

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    question... I know the 3F wants balanced... can the 3F be driving by the Sonic Frontiers SFD-1 Mkii SE+? I know the SFD has xlr outs, but I've seen it described as a single ended DAC. I just want to be sure.

    Thanks
    -----------------Edit----------------

    NVM, I should have read back in the thread first. I had completely forgotten about the prior SE vs Bal discussion that happened last year. Happy to be reminded that SE isn't a problem
     
    Last edited: Jan 9, 2021
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