Cya|\|
500+ Head-Fier
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- Apr 17, 2009
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Quote:
I ordered the new DA8741 DAC module 3 days ago and today EMS has delivered to my doorstep. The PCB looked the same as old DA8740 DAC module and pin 26 and 27 of WM8741 DAC converter have been shorted to ground plane. I suspect WM8741 is pin-to-pin compatible with WM8740. My old DA8740 DAC module was ruined because few pins have been shorted together while trying to solder pin 26/27 to ground with a sharp-tip underpowered soldering iron (you need iron hot enough to do swift soldering for good precision).
Replaced existing DA1852 DAC module with new DAC module (don't miss out white plastic washer underneath before securing the module with screw) and then soldered provided wire between new DAC module and 3.3V supply line of DIR module (refer to Audio-GD FUN's website). Initial impression is deeper and heavier bass (but not loose) with somewhat improved dynamic range. I have to lower output level of subwoofer in order to compensate for increase in bass. There was cracking noise initially but subsided after half an hour of burn-in.
Even with tube buffer (with a pair of NOS RCA 6SN7 tubes) connected to pre-amp output of FUN, the sound is not warmer than when DA1852 DAC module was in place. True sound quality can only be assessed after perhaps 100 hours of burn-in. Right now configuration of my upgraded FUN DAC is exactly the same as version A of Sparrow (DIR9001/DA8741/ACSS/Diamond) other than power supplies. So if you only need an affordable standalone DAC, perhaps Sparrow is a better choice than FUN for its lower price and much smaller footprint.
How do you connect the subwoofer? Do you connect the rca output to the subwoofer input (and use it's crossover)?