Quote Originally Posted by muralikundoli View Post
help please ,

im using smsl 1955+ dac

my amp is akai aa39, pc win 8

dac is connected to the computer using usb cable..

while playing music, when i power off the amplifier (only amp), the dac stop working, showing like it stuck (or in a loop like state) , in the window play back device list......also the winamp shows the same , stuck!! no sound when switching on amp back...TOTALLY STUCk

only way i find is to power off/on the Dac, or in the play back device list in windows , just disable and then enable the DAC device , it will work ..

any USB driver update available

Help please
Hello, welcome to AR Forums.

It is strange that turning off only the would should cause the DAC to stop working -- actually it's your computer music player that stops working, not the DAC itself.

The SMSL uses only the standard Windows USB audio device although this really should not be a problem. If your computer has S/PDIF output, either coax or optical, try that. If not try one of the music player tweaks below; I believe that Winap and some other players will accommodate either of them. Also, in principle the either of the following ought to improve the sound though they might -- or might not -- fix your particular problem

Try a WASAPI plug-in. WASAPI simplifies the sounds' path from the player to USB or S/PDIF output versus Window's standard "audio stack" interface. When installed, you would select it as the output device in your music player

Along the same lines you might try using ASIO4ALL, (see HERE), which also replaces the standard Windows audio stack with a simpler path to audio output, either USB or S/PDIF.