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  • Allo USBridge Signature Reviews

       (2 reviews)
    Manufacturer: Allo
    Model: USBridge Signature
    Price $: 239

    USBridge Sig was build using RPI compute module so from a software point of view, this will give you access to the latest kernels (way ahead of any competitor). The focus of the device is to lower the noise on USB bus. We chose an excellent USB hub IC (TI) and a separated Ethernet to USB Ic (Axis).

     



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    John Hughes

      

    I use the USBridge Signature with the Shanti power supply as a Roon Endpoint with Ropieee software with USB output.  I had previously used a standard Rasberrry Pi 4 for a short time in the same way.  The USBbridge Signature was an improvement  in cleanness of the sound, with increase of  soundstage width and depth, detail, smoothness,  timing.  It was a nice improvement, but not a huge difference.  I have used it with file types ranging from standard 16 bit, to 192K, and DSD up to DSD 512.  I do not have an MQS dac to test though. 

     

    The one thing I found was that it did not work with the DietPi OS, which is the one it typically ships with.  I got pops and ticks with high resolution formats, especially DSD. I worked with customer support, and they finally recommended using Ropieee OS.  This worked great, and I haven't had any issues since then.  

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    Dynobot

      

    I have been living with the AlloUSBridge for quite some time now, 6+ months. I've used it with Ropieee, Volumio, Dietpi, PiCorePlayer and my own build of Arch Linux + RoonBridge. Each one given a far shot at winning me over ie for at least a month. I used my own library, Internet radio, and Qobuz via RoonBridge. I powered it with a linear regulated PS and used direct Ethernet to compare it with the RPi 3+ and RPi 4 also with the same Software end Ethernet connections. 

     

    My system consists of all Audiogd Master components.

    Audiogd Master 7 Dac

    Audiogd Master 1 Pre

    Audiogd Master 3 amp

    Audiogd HE-350 A/C Regenerator

    Dynaudio speakers. All wire is Duelund.

     

    My results were/are, the USBridge is inferior to both the RPi 3+ and RPi 4 when connected via USB output. I compared USB output only because Allo put so much tech and engineering into the USBridge for superior USB playback. This imo, is the calling card and the strong point of the USBridge.

     

    Each lengthy session of days and weeks produced the same result, a thinner, less full sound. Ultimately the sound was never engaging and always led me to switch back to either RPi 3+ or 4. My thoughts going into buying and using the USBridge was actually biased in favor of the Allo product, being smitten my all the USB tech and thinking/knowing that a superior USB design should/could provide a superior sound. I wanted this to be the case but alas it never came to be.

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