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  1. raoultrifan

    New, Burson Conductor 3 Reference: Dual 9038 DAC, 7.5Wpc Head Amp, Preamp, Changeable Opamps

    Due to its very low internal impedance, its high amount of power but also due its adjustable gain it will drive any can you want. The days when the output stage of a headamp was influenced by the impedance of the cans used or by the inductance of the longer cables are gone.
  2. raoultrifan

    Mini-PC setup?

    I do like your setup and I was thinking to do a similar setup myself too, but running RPi on batteries will not improve sound quality! RPi is powered via 5V source, so you're probably using one single 18650 3.6...4.2V battery with a boost converter that regenerates a higher voltage (+5V) to...
  3. raoultrifan

    Asus Essence One Headphone Amp/DAC (CeBIT 2011)

    I thought LME49720 were the originals for LPF, also the NE5532 from I/V look odd. However, swap the 6 opamps with 4 x NE5532 + 2 x 49720 bought from a credible source (Digikey, TME etc.)
  4. raoultrifan

    Asus Essence One Headphone Amp/DAC (CeBIT 2011)

    Wondering what opamps are inside. If different than the original NE5532/LME4562 then try swapping them with originals.
  5. raoultrifan

    New, Burson Conductor 3 Reference: Dual 9038 DAC, 7.5Wpc Head Amp, Preamp, Changeable Opamps

    Me here, mate. :ksc75smile: I'll have one soon and have it measured on my oscilloscope, but I am sure it will have an even lower AC ripple & noise than the original PSU from Conductor. Having a second PSU, at least as a backup, is always a good thing, especially that the Supercharger is quite...
  6. raoultrifan

    New, Burson Conductor 3 Reference: Dual 9038 DAC, 7.5Wpc Head Amp, Preamp, Changeable Opamps

    1. No. At least no if your SMPS PSU is a good one. Before I purchase a desktop PSU I always look for tests and measurements first, so I suggest you do the same. Besides output voltage and current the ripple and noise is an important decision factor too. 2. No, at least not under normal domestic...
  7. raoultrifan

    New, Burson Conductor 3 Reference: Dual 9038 DAC, 7.5Wpc Head Amp, Preamp, Changeable Opamps

    Strongly not recommended! I've measured the AC ripple & noise of the original PSU from C3X and C3 and it was only few mV RMS. I strongly doubt that your new PSU would be any better, especially that adding the 3rd ping (Earth/GND) is not helpful in this case. You will also loose the warranty too...
  8. raoultrifan

    Topping A90

    Find proper measurements for your headphones and apply correct EQ for them. Also, there are online audio tests (or visit a Dr. to do a proper audiometry) that will tell you how your ear linearity goes. Without EQ there's no way to get the proper sound out of your headphones, due to frequency...
  9. raoultrifan

    Topping A90

    I really think is the headphones/ears problem here. Find/Borrow another DAC/headamp pair from a friend (or buy from an online retailer and return if not OK) and give it a try in comparing the sound flavour between the two pairs.
  10. raoultrifan

    Topping A90

    Both DACs (https://www.audiosciencereview.com/forum/index.php?threads/smsl-su-9-balanced-dac-review.16150/ vs. https://www.audiosciencereview.com/forum/index.php?threads/gustard-x16-balanced-mqa-dac-review.17419/) are measuring really good and both are on the same price range, so you should grab...
  11. raoultrifan

    New Burson Conductor - V2 and V2+

    These headphones are lacking mid-trebles, where the clarity goes: https://www.rtings.com/headphones/1-4/graph#691/3992. A bit of EQ might help, but will not make a big difference with a pair of headphones that simply don't reproduce these freqs.
  12. raoultrifan

    Topping A90

    Did same test now to a friend: Roon > D90 > A90 (RCA) > Fezz Audio Titania > Piega Premium 3.2; no matter A90's gain used the noise was non-existent. Output volume to the amplifier was pretty high, definitelly >90 dB. I guess your setup has a flaw, or perhaps your A90.
  13. raoultrifan

    New, Fully Balanced Burson Conductor 3X: Dual ESS9038, 7.5wpc XLR, 3.75wpc SE Headamp, Changeable Opamps

    Just get V+ and GND from one XLR plug and connect it to the RCA of the sub. Find someone that has a good understanding on how to wire balanced and unbalanced connections (without shorting V- to GND!!!) and can also dissassemble a XLR plug and wire your sub cable. Otherwise call Thomman and let...
  14. raoultrifan

    New, Fully Balanced Burson Conductor 3X: Dual ESS9038, 7.5wpc XLR, 3.75wpc SE Headamp, Changeable Opamps

    If it's a powered sub then you should be able to connect it to only one channel of the C3X.
  15. raoultrifan

    O2 AMP + ODAC

    Usually headphones do not vary much their impedance while playing music, as speakers do, so I don't think neutrality of a headamp is much related to this. Instead, frequency response tested with several impedances across audibile bandwidth will be more helpful here. More probably, the O2 is...
  16. raoultrifan

    Comment by 'raoultrifan' in item 'Burson Soloist 3X Performance'

    Seems so, like they did with previous amps and combos too. Maybe they prefer to provide power rating for a given amount of THD (e.g.: <0.1%) or simply they want to stick with a lower number to ensure thermal stability under all circumstances. One thing's for sure: this headamp is a beast with a...
  17. raoultrifan

    Asus Essence One Headphone Amp/DAC (CeBIT 2011)

    I thought I already replied: THD+N is very low, see the pics from my previous answer. I see no jitter when using the USB input and crosstalk is also better than -90dB (channel separation). ASIO works perfectly on Windows 10 and for MacOS no drivers are needed, no drop-outs during playback or...
  18. raoultrifan

    Burson Soloist 3X Performance Head/Pre Amp - 8Wpc XLR with MUSE72320 volume control

    Exactly! The 6.3mm jack output (TRS) will also be adjusted as well, after the XLR 4-pin will be adjusted by you first. No, as you said above: between V+ and V- of each channel (pins 1 & 2, then pins 3 & 4). Maybe you won't need to adjust anything, do a measurement first (no music playing, no...
  19. raoultrifan

    Burson Soloist 3X Performance Head/Pre Amp - 8Wpc XLR with MUSE72320 volume control

    Lot of care is needed in there, just take care not to damage something.
  20. raoultrifan

    Burson Soloist 3X Performance Head/Pre Amp - 8Wpc XLR with MUSE72320 volume control

    In most amplifiers is the same: DC voltage on outputs will easily change after swapping opamps, especially if not using manufacturer recommended opamps. In most cases you won't need to adjust anything, but sometimes the output DC might be too high to accommodate low impedance headphones and a...
  21. raoultrifan

    Asus Essence One Headphone Amp/DAC (CeBIT 2011)

    Probably not profitable enough, on a market where Topping, SMSL etc. are better at half the price. I hope that ASUS will at least build internal audio cards for us and maybe U7 mk3 or similar cheap external ones.
  22. raoultrifan

    TOPPING D90 MQA ---AK4499 AK4118 Full Balanced DAC Bluetooth 5.0

    Hi, Is the review ready and published here? I can't find any Showcase link for the D90 MQA. Thanks.
  23. raoultrifan

    TOPPING D90 MQA ---AK4499 AK4118 Full Balanced DAC Bluetooth 5.0

    What can I say, beautiful inside, way above my expectations. Sound and measurements are top notch, but everyone else knows that already.
  24. raoultrifan

    Asus Essence One Headphone Amp/DAC (CeBIT 2011)

    Perhaps some more pictures might help here, with the two MUSES 02 opamps. Basically, if the pins are easier to bend than regular opamps and the big edges are rounded there's a good chance to be original. With better pictures, without flash and from different angles, we might inspect the top of...
  25. raoultrifan

    Burson Conductor 3 Performance & Conductor 3X Performance

    Maybe this would help: . Basically, turn off the power, wait for few minutes to ensure that all capacitors have been depleted of voltage, discharge yourself by touching a metallic case properly grounded (a PC case connected to a power outlet with real Earth), then use a dedicated tool to pick-up...
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