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The Stax Thread III

Discussion in 'High-end Audio Forum' started by currawong, Aug 20, 2013.
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  1. BreadMaster
    Now you need to hear the 007 +009 on Diy T2
     
  2. Dan Lee
    haha. I am pretty sure the T2 is simply not in my future unless they have a custom builder half off sale. I think its gonna be a while before this apocalyptic style event haha.
     
    BreadMaster likes this.
  3. billqs
    I really feel the Carbon gives me all I need for STAX.
     
  4. thinker
    Phenomenon improved Carbon amplifier,lot's of light inside,excellent built
    IMG_2797.jpg IMG_2798.jpg IMG_2795.jpg IMG_2796.jpg
     
    BreadMaster likes this.
  5. BreadMaster
    How much?
     
  6. thinker
    2500USD+shipping and customs
     
  7. musicman59
    Where to order?
     
  8. thinker
    here
    http://phenomenon.su/kontakty/

    have been listening now for few hours,the fan is quite and keeps the amp running at medium temperature.The sound is absolutely fantastic, neutral,smooth, musical ,it has huge amount of air and soundstage and
    pics everything up from the recording.Just a dream amp.
     
    BreadMaster likes this.
  9. thinker
    the three lights on front panel are 1-2-3 where 1 is left ch and 3 right ch the number 2 lights up when the amp is ready .The button in front is press button
     
  10. thinker
    my room is now dark and noticed that the lights inside the amp are monitoring , the light inside moves slowly from green,blue to violet and red, looks like a alien craft
     
    Last edited: Aug 7, 2019
  11. thinker
    Got a hello from Mafia:)

    "Ok, it's not often we see this level of crap... but holy **** on a stick. So this is claimed to be an "improved Carbon" but the only improvement I can see is an added chance to burn your house down or give you a nasty shock. Seriously, this is apex level crap and how anybody would ship something like this out...is just beyond me. Also, gotta love "thinker" who consistently shows any possibility to do just that...."

    This Phenomenon amp is not improvet Carbon amp it's a another level above it.Of course Spritzer is interested to sell the older design for 6500 USD to run he's business.But 6500 USD :) really? look inside they are almost empty and the case is as ugly as it gets
     
    Last edited: Aug 8, 2019
    BreadMaster likes this.
  12. JimL11
    Um.

    Not sure that "improved" is the right word. Perhaps amp circuit is Carbon, but power supply definitely is not. Kevin Gilmore, designer of the Carbon, has pointed out what appears to be one of four HV switching power supply boards in upper right last picture, which are good for ~10 watts each. The original Carbon design uses a linear power supply, and requires heat sinking of the PS as well as the amp circuit, as a Carbon consumes around 160 watts IIRC. The KG PS is also MUCH quieter than any switching power supply can be. Switching supplies have two basic advantages - cost, and efficiency.

    On the other hand linear supplies are generally thought to sound better. Two examples. Stax uses a switching HV power supply in its least expensive and smallest amp - the SRM252. All its other amps use linear power supplies. And Ben Zwickel of Mojo Audio has done some business selling linear power supplies as upgrades to the Linear Tube Audio microZOTL headphone amp, which was originally sold with a switching power supply. Enough so that Linear Tube Audio now sells the microZOTL with a linear power supply as an upgrade.

    Finally, what is an internal fan doing in an amp with external heatsinks? Seems like putting an automobile radiator fan in the trunk. Apparently the fan cooling is for the power supply, which has got to be a first. I've seen lots of amps with external heatsinks, some amps with fan-cooled internal heatsinks, but I have never seen a fan-cooled power supply before. Will wonders never cease?
     
    arnaud, mulveling, statfi and 3 others like this.
  13. BreadMaster
    LOL that's Spritzer alright.
     
  14. tigon_ridge
    Well, aren't almost all PC power supplies equipped with a fan? That said, I don't see a vent in the case as an in/outtake for that fan. What's the point of having an internal fan, which adds electromagnetic interference beside sonic noise, if all it'll do is circulate warm air around the amp?
     
  15. tigon_ridge
    420V also isn't an improvement on the Carbon's 500V max output, unless I'm mistaken.
     

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