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Massdrop x THX AAA™ 789 Linear Amplifier - Impressions Thread

Discussion in 'Headphone Amps (full-size)' started by XERO1, Mar 1, 2018.
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  1. loki993
    Everything else you said usually I don't buy it, if I were to buy something from them its only if its a in stock item. I understood the wait times before when the site was basically a group buy site for mostly niche products. At this point though they are selling a lot of very popular stuff..I mean the HD6xx for example multiple large tech sites talkin about it and the great deal it was.

    the 789 was in stock for a few months at the end of last year, as was the 6xx, the SDAC and a few other things I know because I was watching them. You could buy an 789 and have int at your door in 2 or 3 days. All of sudden around january they vanished, along with the 6xx and the SDAC oddly enough. After that there only small drops for the 789 with long lead times and they would sell out in a matter of minutes.....yes when theyw ree zxtcokced people wehrre talking about them, but once they were gone everyone was talking about them like it was some mythical creature. People were trying to sell them for outrageous prices on ebay. There were like 60k requests for a new drop on the site. I mean there is the proof..it sat in stock for months,.even amid all the great reviews they seemed to have enough of them, people were buying them. Now with the "limited" drops they are gone in minutes...every time.

    I mean I don't even really care about the price hike...I think they half assedly explained it any some point..gave some wishy washy reason so yeah its probably just to squeeze a few more bucks out of people...they did it with the 6xx too...but I don't know I guess I find that less egregious...
  2. jsmiller58
    I respect your position, I really do!! I just don't understand why you are worked up over it. If they no longer operate in a way that suits/satisfies you, just move on... I don't believe that I have an inherent right to have them behave in a manner I want them to. However, I do have the right to chose whether to give them my business. I also understand any complaining that I do about them will have precisely - not approximately - zero impact...
    Ken G likes this.
  3. ok3wire
    Has anyone tried using the DAC portion of the Chord Mojo to feed this amp? I’m about halfway through this thread and don’t recall having seen any detailed mentions of it thus far. Any general SQ evaluations relative to other DACs in the sub-$1000 category?

    And more importantly, if I were to attempt this, would the following represent a permissible cabling solution?


    Last edited: Jul 27, 2019
  4. AndrewM888
    Yes that cable will work well. Very nice.
    trellus likes this.
  5. ok3wire
    Thanks so much, Andrew. Nothing gives a person piece of mind like getting the scoop straight from the designer. :)
  6. whohasaquestion
    So despite the look of xlr, its actually not balanced?

    Why not just use a 3.5mm to rca cable?
  7. Davesrose
    This amp does not have a fully balanced circuit design. However, like many current designs, it does have more power output with balanced interfaces.
  8. ayang02
    trellus likes this.
  9. Currawong Contributor
  10. ayang02
    Of course, not saying these 3.5mm/RCA to XLR cables are balanced....they are all single-ended cables afterall.
  11. AndrewM888
    Cable shields have non-zero impedance that conducts CM noise currents. So you want cables with separate copper for shield and for signal ground, ideally along the entire length.
    flyte3333 likes this.
  12. themuna
    I'm not sure who you meant to respond to. I'm not "mad" or "worked up" about a company trying to make money. That's what companies do. That's why I specifically said that I was "critical" of their practices. This whole site is people speaking favorably or critically of one thing or another.

    My point about those things is that they don't match with the stated purpose of switching from Massdrop to Drop. The lead times and crowdsourcing don't make sense any more when they are selling their own products and if they have stated themselves that the site is different now. I never questioned it when they were selling other people's products and before they changed the name and made those statements. I made the decision to buy because I want the product but wanting a product doesn't mean you have to be a blind sheep to all of a company's decisions. I bought the product and I think it's a worthwhile purchase. I am simply critical of some of some aspects of the company and marketing. How is that different than any review or discussion posting on this site or others?

    And yes, we speak criticality on an online forum about a company and how their statements don't match their actions. That's allowed. Being critical is ok. That's allowed on an online forum. No one here is staging an "Occupy Drop" rally and planning a shutdown in all caps. We're actually just discussing those "complex" purchasing decisions by talking about different aspects of the product and manufacturer. Just as you can talk about things you like, you talk about things you don't. That's the only way to make decisions. If you think a product/company could be improved, it doesn't hurt to say something. And an online forum is a better place to discuss those things and see what other people feel before you go sending emails to customer service complaining about the type of tape they use for their boxes.

    Great how I make a post that is primarily defending Drop and defending the price increase on a product that I paid the 400 bucks for (I used PayPal so I actually already forked over the money to preorder before the drop even ends) and yet somehow I'm not supposed to comment on anything else or be critical of a company on an online forum.
    Last edited: Jul 28, 2019
  13. jsmiller58
    While I can readily see how you could interpret what I wrote the way you did, it is a more extreme interpretation than intended. I take responsibility for that, and don't blame you.

    You can write and discuss whatever you want. I did not - or at least did not intend to - tell you what you could do or could not do. I personally would like to see this thread be more about critical evaluation of the product than the company or practices, but, hey, it's a free internet, right? My opinion, which I freely shared, is that commenting/complaining about (Mass)Drop's practices will do nothing, but there is no prohibition against doing so. That is my freely shared opinion.

    As to pricing, schedules, volumes... I have the advantage of having led in the past the Manufacturing Operations for a company that used off-shore contract manufacturing so let's just say while I don't KNOW what is happening over at (Mass)Drop, I can make some very educated guesses. Just to be clear, I would be shocked if (Mass)Drop makes their own products in their own factories using their own manufactured subcomponents. Even Apple doesn't do that. So I am probably predisposed - maybe too generously - to give (Mass)Drop a pass... It could well be that I am completely wrong in doing so. But if I take the opposite side of the argument and criticize them I am convinced it won't make any difference.

    As a positive, a public service of the critical statements is that it may serve as a warning to the naive who may press the pre-order button without looking at the bottom of the drop page and see the estimated ship dates.
    PaganDL likes this.
  14. hakuzen
    it would work, but for single end signal, better use 3.5mm to L/R RCAs. cheaper, and you get the same result.
    reserve XLR inputs for sources with balanced output

    got informed: for THX 789, you get clear advantage by using XLR input even for single-ended signals, and this kind of shielded cable.
    Last edited: Jul 31, 2019
    ok3wire likes this.
  15. flyte3333
    Hi @AndrewM888

    If I have a DAC with only XLR outputs... but I don't want to use the XLR inputs of THX789 because the gain is too high (even on lowest gain setting) - do XLR-to-RCA cables provide the same benefits as the RCA-to-XLR cables you've recommended for RCA-only output DACs?

    No issues with XLR (DAC end) to RCA (THX789 end) cables?
    Last edited: Jul 30, 2019
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