FX Audio 6j1 tube preamp - a $31 wonder

Discussion in 'New Gear - Values' started by Poultrygeist, Dec 9, 2018.

  1. Frank Sol

    Frank Sol Addicted Member

    Messages:
    8,294
    Location:
    SoCal


    early report... the soundstage is larger/bigger and more 3D

    gonna unplug the stock P/S before I go to bed -- better safe than sorry

    more later
     
    Bicyclist likes this.

     

    Please register to disable this ad.

  2. Poultrygeist

    Poultrygeist Lunatic Member

    I sound like a broken record when I keep saying "it's all system related". My best sounding amp are the Bottlehead 2a3 SET mono blocks where a passive shines but the FX is a poor choice. But that doesn't stop me from loving what the FX does with several other of my amps.
     
    Last edited: Feb 10, 2019
    cuchu, Pio1980, Dadbeh and 1 other person like this.
  3. john111/LZ

    john111/LZ Lunatic Member

    Messages:
    15,448
    Youve not killed my buzz Pio,i look forward to turning the FX on everyday in its present configuration as a buffer into my old Trio amplifier.......smooth yet dramatic,excellent timbre to unelectrified instruments and that aspiration all good systems have.Through 15 inch Tannoy Golds its one big banquet.Its a bargain miracle IMHO.:):beatnik::)
     
    Pio1980, Poultrygeist and Dadbeh like this.
  4. Poultrygeist

    Poultrygeist Lunatic Member

    We really shouldn't be comparing a $32 preamp with anything that comes out of Pass Labs. But in doing so it only shows what a great value it is.
     
    MiamiEd, Pio1980, cuchu and 1 other person like this.
  5. hifix

    hifix Active Member

    Messages:
    387
    Location:
    Groovy Tunes HQ
    Hi Pio1980,

    No buzzkill at all.
    Was the FX tested with a linear supply ?
    I went to a linear supply soon after receiving the item and have packed away the stock PSU. i didnt get much of a listen to it in stock trim.
     
  6. Frank Sol

    Frank Sol Addicted Member

    Messages:
    8,294
    Location:
    SoCal

    I'm doing that today if I have the correct adapter
     
    MiamiEd and hifix like this.

     

    Please register to disable this ad.

  7. MiamiEd

    MiamiEd New Member

    Messages:
    41
    Location:
    Miami, FL
    PG, I have enjoyed the 2 minute upgrade, switching the supplied wall wart to a Radio Shack 3 amp regulated supply. The difference is not subtle. I heard the opening up of the sound stage, more detail in the highs, more bass that have been reported previously. I did have to back off the volume control.

    Paul Desmond's smooth and dry alto sax tone came through even more on the CD "Take Ten". Jim Hall's superb guitar work backing up Desmond was more palpable with the change. Both musicians seemed to move a bit mor in front of the speakers.
    I am looking forward to listening to more of my favorites.
    Highly recommended.
     
    Poultrygeist and cuchu like this.
  8. Poultrygeist

    Poultrygeist Lunatic Member

    Ed, not only do we hear alike but we listen to the same music. :thumbsup:
     
    MiamiEd likes this.
  9. Bicyclist

    Bicyclist Member

    Messages:
    74
    Listening to some very old and roughed up zep albums today so its difficult to pay attn to the system. Preparing for a zep cover show.
     
  10. Pio1980

    Pio1980 AK Member Subscriber

    Messages:
    28,325
    Location:
    Eastern Bamastan
    No, the oem supply was used. I may try a regulated linear on sometime. The audible problems were with a general lack of transparency and a definite congestion of complex material when things get busy.
     
    hifix likes this.
  11. Poultrygeist

    Poultrygeist Lunatic Member

    Tell us about your system.
     
    MiamiEd likes this.

     

    Please register to disable this ad.

  12. Yatsushiro

    Yatsushiro Active Member

    You sound like an Audio Psychologist!
     
    smiling, MiamiEd and faber12 like this.
  13. Dadbeh

    Dadbeh Schrodinger's meerkat Subscriber

    Messages:
    560
    hahaha.

    -the sound was congested and plasticy, with rolled off highs and recessed mids.
    -but how does that make you feel?

    lol
     
    MiamiEd likes this.
  14. Pio1980

    Pio1980 AK Member Subscriber

    Messages:
    28,325
    Location:
    Eastern Bamastan
    Space limited, it's between nearfield and small room listening. Two Advent 2 Econowaveguide mod'ed on 3 ft stands , Advent bottom, JBL top with Zilch's crossover design. Speaker wire 28 ga zip. ICs are Zu, light weigh with good connectors.
    I used a self-built passive control with a high grade Noble switchpoint 10k pot for years as a standard until the controls showed signs of being worn, and replaced it reluctantly with a Pass Labs DIY B-1 Buffer, which thankfully passes muster for transparency without any audible "yes-but" reservations. Power amps vary as I am an amp junkie with a habit. Presently using an Iverson Eagle 2 I overhauled several years ago that makes the cut, others that do include the Allo Volt +D and a Muse One Hundred MOSFET amp. Also representing tubes is the Marantz 8, a magnificent vintage example that unfortunately sounds lackluster in this system, which seems to prefer to be driven with solid state that can double down for a bottom end that doesn't need a sub on these remarkably musically involving and satisfying speakers. I have yet to give the magnificent Marantz a try on the 4 Ohm taps.
    Digital source is a Pioneer Elite DV-45A allmode player, analogue is a few reasonably decent turntable cart combos with decent MM / LOMC preamps.

    I myself am hearing impaired but still a stiff critic of mediocre sound with relatively little time left to spend time with gear that doesn't get me into the music without annoying me with obvious problems with letting it out into the room. I'm getting older at 72 and I may be going deaf sooner than I thought.
     
    Last edited: Feb 11, 2019
    Poultrygeist and smiling like this.
  15. Frank Sol

    Frank Sol Addicted Member

    Messages:
    8,294
    Location:
    SoCal

    Son is dropping off his Pyramid PS14KX (13.8v 12a) power supply today around noon -- will give it a try

    Also , no disrespect to Pio , I'm going to try powering both the FX and Volt+D with ^ that P/S and see how they sound
     
    Pio1980 and MiamiEd like this.
  16. Bicyclist

    Bicyclist Member

    Messages:
    74
    Today listening to zep at bbc on cd tc745-fx01-adcom535-polkm7ii. Really nice. The recordings are problematic of course but a real nice view into 1969-1971.
     

     

    Please register to disable this ad.

  17. Pio1980

    Pio1980 AK Member Subscriber

    Messages:
    28,325
    Location:
    Eastern Bamastan
    I'm considering another go-around with a regulated linear ps and perhaps different tubes, if I can talk myself into the additional investment.
     
    Dadbeh likes this.
  18. Dadbeh

    Dadbeh Schrodinger's meerkat Subscriber

    Messages:
    560
    Voskhod 6J1P-EVs known for the rocket logo on them have been the most pleasant surprise and they have a very well rounded and decidedly "Hifi" sound. with detailed extended airy top octaves and real nice impactful bass. I of course prefer the more full bodied thicker mid range that the WE403 did but I think most my audiophile friends will probably choose the Russian as the more accomplished one.
     
    Last edited: Feb 14, 2019 at 9:01 PM
    MiamiEd and cuchu like this.
  19. Yatsushiro

    Yatsushiro Active Member

    If that is a picture of the DAC you have, then it is a Piano, rather than a Boss.

    If you do have the Piano 2.1, the best results are achieved by running it in ''dual mono' mode, with the interconnects using the two outermost RCAs. If the software you use supports it, can I suggest trying again in this mode?

    People who do use the Piano improve things further using a Kali board to reduce jitter, and even further by using an Isolator between the RPi and the DAC.

    Of course, after all of this you still have ESS Sabre chips, which people seem to love or hate...
     
    Dadbeh likes this.
  20. Dadbeh

    Dadbeh Schrodinger's meerkat Subscriber

    Messages:
    560
    Yes I do have the piano. My bad. Thanks. The piano has ti 5142 chips that so far sound even worse than sabre based dacs. I will try What you said in terms of the outputs but I don't feel like spendibg on thet isolator or Kali for this dac. Not worth it. I wil Burn it in for more hours and also use an lps in the coming days.
     
    Last edited: Feb 12, 2019

Share This Page