Tonality

The Fidue A83 is a treble head dream and with the right match (DAP or amp) bassheads will find enough satisfaction in the bass extension and detail. Tonally the Fidue A83 is neutral to bright with a slightly forward treble that after around 50 hours burn in becomes nicely controlled fast and very articulate. The extension on the A83 is superb with plenty of width and an almost ethereal feel to the top end. The slightly forward treble has a peak in and around 7-8k but rarely does it result in any excessive sibilance or harshness unless there is a poor recording being played back or a poor source player. There is a fantastic amount of transparency in the upper mids and lower treble particularly and detail does shine though with ease with the right settings.

Mids

The mids of the A83 are perhaps a little less forgiving of bad vocal recordings with the upper mids tending to display a little sibilance in female vocals if the source or recording is a poor fit. Though they are not as full as I would like they are neither recessed nor veiled and nor do they suffer from any excessive bass bleed. In fact it is quite even and smooth though not as full and rich as I tend to prefer. Top marks though to the A83’s mid range clarity. There is nothing claustrophobic or congested in the mid range so whilst the A83 can easily offer above par separation and accurate imaging there lacks just a little bit of body from time to time on the likes of rock and male vocals to really grab me by the throat. I would not call it monitor like either. The mids are not sterile in any shape or form, just more suited for detail lovers.

Bass

There is also a very slight elevation in the bass response with a presentation that is more about support and coherence than anything overpowering or slamming. It is fast, tight and snappy yet full and detailed with no bleeding into the mids or any excessive bloom. This is a quality but controlled dynamic driver implementation. It was not stuck in there to purely satisfy the bassheads. The guys at Fidue definitely had a concept of the sound signature they wanted and the type of bass they wanted in that mix.

Comparisons and matching

DAPs

The A83 does need a good match from a DAP or amp. It could be the difference maker in your enjoyment of the A83. When it comes to DAP matching I also found levels of hiss in some and none in others. Oddly enough the best tonal match was the lusher warmer FiiO X3 with the Fidue X3 but probably suffered most from audible hiss on lossy recordings. The X5 didn’t quite nail it for me with that little bit of sibilance I noted before in the X5/DX90 review being more audible and the lusher tones of the X3 lost in favor of a more neutral albeit smooth tonality. The DX90 brought in an excellent level of control in attack and decay which really excelled in classics, acoustics and jazz but at times I felt it to be a bit too strident with the A83, particularly with guitar heavy rock.

AMPs

Stacking with amps and surprisingly I didn’t like the Continental V2 matching with an Ipod Classic and the A83. I was expecting something far more lush and liquid in the mids from the A83 with the Continental but ended up sounding a little strained and congested. Not sure what happened there. Thankfully the best match of the night was a classic 160gb with the Vorzuge DuoAmp with the bass gain switch on. The Vorzuge has oodles of warmth and a satisfying bass extension translating into a much weightier bottom end from the A83 and a slight thickening up in the mids. Almost as satisfying was the Just Audio uHA-120 but curiously I was using this around 12-1pm on the dial and I remember a while back the LCD-2 being relatively well driven from the same amp. Anyhow the UHA-120 is a warmish amp also with a nice thick bottom end but just doesn’t have quite the same agility in the uppers as the Vorzuge masterpiece.

Some of the competition

The Fidue A83 is almost the exact opposite of the Westone W50 in terms of tonality and presentation with a much cleaner sound and more forward and extended top end. The W50 is so much darker and with a far more gut wrenching bass response that is sometimes overpowering using the stock EPIC cable for my taste. Comparing also to the UM3X the mid range of the Westone is fuller richer and perhaps a bit more natural than the A83 but feels a little less dynamic with the edge in snap and extension at both ends of the spectrum in favor of the A83.

The UE900 comes a bit closer but the top end is quite relaxed sounding compared to the A83. The UE900 does sound a bit richer and fuller overall but I give the A83 the edge in speed and articulation. The tuning on the hybrid UM Merlin is also warmer with a heavier bass response than the A83. But whilst the Merlin has a superior soundstage and mightier bass extension the A83 actually has the more forward and neutral top end making the Merlin sometimes feel a little laid back and lacking in snap compared to the A83.

Click here for final thoughts…

  • 8
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
    8
    Shares

18 Responses

    • headfonics

      This might be a decent match Neil given the A83 has a good top end and the C5 has excellent staging.

      Reply
  1. Franco

    Hi,
    can someone pls suggest the best price online where I could buy the Fidue A83?
    Here in Italy are too expensive.
    Thx
    Best
    Franco/Rome

    Reply
    • headfonics

      I believe some ebay shops sell it for a little less but its quite new and lowest I saw was about $330.

      Reply
  2. giorgio

    Hi all,
    very nice IEM the Fidue A83… Indeed I’m really close to buy them.
    Did someone ever try the new IEM Fighter by Ubsound? it’s an Italian brand and, believe me, the sound is really good being an IEM of only 69€…
    I bought them on Amazon Germany, but I’ve seen that the Fighter are now available in Italy, Spain, Austria, Germany and Switzerland… not in the UK so far, but available online everywhere.
    If someone already tested them please let me know your feedback.
    Cheers
    G

    Reply
    • headfonics

      Have you tested them Giorgio? Say hi to Sandra and Stefano also for me – quite the Italian demand for a review of these eh?

      Reply
      • giorgio

        G’day,
        yes I did, and I think it’s a nice iem considering the price. However, now I have to decide if buy Altone 200, DN-2000 or indeed this new Fidue A83…
        Sorry, I did not understand what does it mean say hi to sandra and stephan?!?

      • headfonics

        Hi Giorgio

        I had 4 indivdual requests to review the UBsound Fighter IEM in the last 2 days – was wondering if you are all together or know each other. All Italian :)

        Good luck with your choices, hope you can demo before you buy but if not the A83 is a good pick.

      • giorgio

        G’day,
        yes I’m really thinking about the Fidue, but as I really like the v-shaped sound (bass & highs onwards) I’m a bit affraid that the A83 could be a bit n-shaped Vs the Dunu dn2000 or the Altone 200… this is why I’m deeply reading all the worldwide reviews in order to better understand this mess. If you have some suggestions please go ahead. This is why I’m writing on Headfonics.
        Reagarding your kind opinion for the “4” Italian individual requestes, thanks, now I understand your sentence of yestarday (although a bit paranoic). Which also means that you have 5 persons interestes about this iem fighter (as in facts I never asked for any review… did I? I just asked, and still asking, to receive some feedback from some of your readers/followers about this product, only to understand if my good feeling is agreed and shared from the HF comunity as well).
        I think (in my humble opinion) that there are 3 main reasons if you are (and will) receiving many tweets from Italy regarding this iem:
        1) for instance, I bought them seeing many many reviews in Europe about this products, plus a huge adv campain everywhere online.
        2) consider that it is produced by the first Italian vendor in the history of the audio segment, therefore the iem fans are obviously proud and happy about this. Here in Italy all the main newspapers and specialized audio magazines are talking about Ubsound… plus the world of mouth.. I’m sure you can imagine… :) We are not a large country as the US, so the gossip is quick and easier.
        3) maybe you didn’t know that, after the several main Italian blogs & forums, the two most important foreign iem’s blogs known in Italy are Head-Fi & Headfonics… (strange you didn’t know it). In fact many many links of your articles/reviews are posted very often on the Italian blogs/forums, only for those who speak in English (a little bit) like me obviously.
        So, maybe this could be the reason. But, sorry for my question: did someone really ask you for an article about the product? beacuse in this case it’s a real goal… isn’t it? which would means that you are famous in Italy too. You should be happy… at least ’til you are.
        Anyway, I’m just a follower also of Headfonics, so I don’t want to be involved in these bs.. beacuse I’m not interested at all and honestly I don’t care too. So I virtually accept your excuse in advance (and I forgive your team already) for your huge mistake implicating me in this useless mess. Don’t forget I’m a follower of your blog… so please let me know if you’d like I stop to read and share your reviews all around Italy. It would takes a minute to stop it, sharing the dumb reasons of this bs all around the Italian & European blogs.
        Regards
        G

      • headfonics

        Bravo spoken like a true Italian with heart :) always a roller coaster ride. Not all of us are from the US actually smaller countries than Italy. Lets talk to Ubsound and quench the national thirst eh?

      • giorgio

        Hey mate! pissed off with me? Are you blaming or just joking??
        First of all, yes, I’m Italian, and? I have an heart, like you I hope, and? I don’t understand the lout tone of your message.
        Even though I grammatically understood your sentence “always a roller coaster ride”, I do not understand the sense and the real meaning… is it a caveat?? About what??
        Also I didn’t understand the sense of your second sentence “Let’s talk to Ubsound and quench the national thirst eh”. Appease the thirst of what? Water? Fame? May you please explain both sentences considering the level of my English? I mean I understood the translation, but not the sense… are them US proverbs?
        Anyway, you didn’t answer to my several questions in the post above so far… may you? Including my question concerning if I’m a welcome guest on your blog or not.
        Lastly, also please explain if the problem (in your mind) is that you think I’m writing for joke, spam, etc? Is your problem tied to the Ubsound sentence or Fidue sentence?
        when you’ll understand your mistakes, it would be appreciated and kind to receive a message like “I’m sorry”… Think about it… I hope anyway this is just a misunderstood… otherwise I kindly ask you to explain. Bye.

      • headfonics

        Not at all – all are welcome eh? I am not from the US by the way, much closer to Italy. Buy the A83 amico, you will love it, its got some amazing highs and looks great.

        Since I have never tested the other IEM’s yet I cant give you an insight however we just touched based with some of the DUNU distributors so we are hopeful of being able to do some reviews on this also and do some comparisons.

        Not sure when though so if you are in a rush then why not try the A83.

        the topic is the A83.

    • Franco

      Hi,
      I’ve got Fighter iem since May, a would say a complete and great iem. Nice design and accurate materials. The sound is good imho, very v shaped.
      Bass: powerfull, deep and textured
      Mids: warm and a bit backwarded
      Highs: precise and without distorsions
      The flatwire is quite confortable and tangle free.
      Taken on amazon italy at 65€
      Best
      Franco/Rome
      P.S. did you buy the Fidue?

      Reply
      • headfonics

        The Fighter IEM is on its way in a few weeks for a review. :)

      • Franco

        Hi Headfonics,
        no reviews about the iem Fighter so far? I’m waiting for this :-)
        Best Franco
        ps. I’ve just received the A83 taken from amazon uk… great performance at the first test… let me finish the burn-in then I’ll let you know more details.

      • headfonics

        Thanks Franco, hope you enjoy your A83.

        One of our writers has the Fighter for a review – lets wait to see what he thinks.

      • Franco

        Hi Headfonics,
        thanks for your reply, I will wait for the Fighter reading the next reviews as I always do.
        The Fidue are really nice… but I think they need a long burn-in as still too hard and not enough textured so far.
        Take care
        best

Leave a Reply

Your email address will not be published.

Tonality
Build
Fit
Matchability
Value For Money
Final Score

This site uses Akismet to reduce spam. Learn how your comment data is processed.