Streamer/DAC - Where is the value?

77Jovian - quieter, blacker background, less grain, more detail retrieval and more open.  I have an upgraded power supply in the G1 as well.  Tough to really do an a/b comparison as with either the Lumin or G1 you have to open the unit up, take the old power supply out.  The comparison is all based off the memory of the old power supply and the new one, could be some psychology at play.  You void the warranty on the Lumin if you go down that path - big item to point out.  Many will point to the power supply as being key on a streamer, in theory makes sense upgrading the power supply would improve performance.  
 

I thought it was work the risk and was happy with the upgrade. 
 

Best of luck.

Definitely try to go separates road. Besides better SQ it will give you more flexibility in the future. Consider Qobuz, cause Tidal with their MQA kind a limits you to MQA enabled DACs (only if highest res of Tidal important for you). Your budget is fine, you could get nice Lumin, Auralic or Aurrender streamer with nice R2R or Tube DAC. Another suggestion- get your streamer hard wired with your router using well shielded Cat-7 or 8 LAN cable. 

My assumption is that the DAC is going to play a much larger part in sound quality than the Streamer.

I disagree with this IME.  Initially I thought the same thing, but everything in the streaming chain from switches to cables to streamers, for whatever reason, seems to make a big difference.  Toward that end, I’d buy a separate streamer and DAC as both technologies are progressing quickly so the flexibility to upgrade one when a meaningful improvement occurs in the other you can just upgrade that and keep the other.  And I’d recommend spending around 50/50 on the DAC and streamer to keep it balanced.  You could do something like a Lumin streamer and a Gustard R26 DAC and have a really great combo that doesn’t break the bank and will likely be a significant upgrade over the Cambridge.  Just one option to ponder, and best of luck. 

Maybe I am missing something in this thread but the MA 9000 has a high quality DAC built in. I would think a streamer with a bit perfect digital out should be all that is needed for excellent sound.

Perhaps keeping the Cambridge and changing to a different dac? Currently using a Bluesound Node2 for its dependability but outputting to Schitt Yggdrasil GS at the moment and like what I’m hearing . I like the ability to change out the dac  to experiment with the different characteristics of other units.