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  1. #131
    Senior Member
    Join Date
    May 2010
    Location
    London, UK
    Posts
    744
    Quote Originally Posted by Heuer View Post
    Apparently the white case ones sound better
    Well, that's the one for me !

  2. #132
    Quote Originally Posted by Heuer View Post
    With the (hopefully) imminent arrival of my DAC32 my thoughts wandered to a PSU for it. Polyvection say that any good USB 5V PSU/charger will be perfect and as I need one I happened upon this bit of research: https://lygte-info.dk/info/ChargerIndex%20UK.html

    Who would have thought!

    They have tested a huge number of these chargers and also measured the noise they produce. Best of the bunch is this one off eBay at ú10.99 inc P&P which has a noise level of 5mV rms and 106mVpp at 0.5A: https://www.ebay.co.uk/itm/5V-2A-AC-...AAAOSwgLFeknB5


    For those of you in the USA or EU the Apple charger A1400 produces even less noise at 0.5A with 8mV and 81 mVpp for about the same price. UK version is A1399:
    https://lygte-info.dk/review/USBpowe...pter%20UK.html



    Main page is here: https://lygte-info.dk/

    Another interesting review here: http://www.righto.com/2012/10/a-doze...le-is.html?m=1
    "Apple's power adapter is clearly a high-quality power supply designed to produce carefully filtered power. Apple has obviously gone to extra effort to reduce EMI interference, probably to keep the charger from interfering with the touchscreen. Beware of counterfeits!"

    Now, where is my DAC32?
    Good spot and yes its a 2 Amp supply, so more than enough power. You should not have too much longer to wait for your DAC32

  3. #133
    Senior Member Heuer's Avatar
    Join Date
    Nov 2005
    Location
    Nottinghamshire
    Posts
    643
    Actually I replaced the Amazon AC/DC USB adapter used for my Topping E30 with the JHD one off eBay. I have a SB3>E30>Arcam Solo Mini>Anthony Gallo Micro's/TR-2 subwoofer in our kitchen and it is a lovely sounding system but the new 5V supply made a discernable improvement to my ears. I did look at the Topping P50 linear PSU which has a measured noise level of 1mV rms but not sure it is worth ú129 when the JHD adapter has a measured noise level of 5mV rms and probably gets most of the performance out of the DAC in what is usually a background listening system. None of the other adapters I tried on the E30 (LG, Google, Motorola, Samsung, generic) made any difference. I have an Apple one somewhere which I will try but I will probably spring for another ú10.99 JHD for the DAC32.
    Lounge: Transporter>Audio Synthesis DAX Decade>Audio Research LS22>Krell FPB300>Wilson Benesch Act 1's + 2 x Velodyne SPL1000 sub's
    Kitchen: SB3>Topping DAC>Arcam Solo>Anthony Gallo Micro's+Sub, Joggler controller
    Office: SB3>Acoustic Energy AE1 Active's, Joggler controller
    Various: Radio x2, Boom x2, SB3 x2

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