What to say about this Hybrid versatile , (Desktop DAC/Portable BT Receiver DAC, supporting lates...
I was wondering, whether to buys Fosi Audio ZD3 for my MC351 Amp/ FiiO BTR-15 for my Sennheiser IE200, hmm have to purchase two devices, still no Bluetooth receiver with LDAC/Apt-x lossless).. Here I got this as a hybrid. 1. Works as desktop DAC connected with PC or Bluetooth Receiver for home/on-the go during travelling, small, cute and compact, here is the deal breaker.. I found to replace all three devices (1. ZD3, 2. Fiio BTR-15 3. Fiio BR-13) all in once small DAC... so why not to purchase my dear audiophiles, testing is in progress, volume feels little low, still using 3.5 mm, not had chance to check 4.4 mm female port yet, where it shows true colors, waiting for 4.4 mm cable for my IEM.. will update my review soon.. Boom Boom: How to unlock volume from 15 to 30 Steps to Maximize Volume & Clarity.
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To fix the low volume while maintaining the high audio detail of the dual CS43198 DACs, follow these steps:
Unlock the Volume:
On the HiBy W4 screen, go to Settings > About.
Tap the firmware version number (e.g., "HiBy W4 1.00") 5 times rapidly to enable Developer Options.
Go to the new Developer Options menu and turn Volume Lock to "OFF". This allows the volume to reach its true maximum (30/30).
Set to High Gain: Enter the Audio Settings menu on the W4 and change the Gain setting to High. This increases the output voltage, providing a stronger signal for the MC351's RCA inputs.
Manual Line Out: Since there is no fixed Line Out, manually set the HiBy W4 volume to 27 or 28 out of 30. This mimics a standard 2V line-level signal without introducing digital clipping. Enjoy.. :D