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Add a Linear power supply or iFi SPDIF Purifier2?

I am currently using a Naim Unitiserve streaming from a Western Digital NAS, then using coaxial to a APL DSD-S DAC.  I am considering to spend several hundred dollars to add some tweaks rather than spending $2000+ to buy a new streamer/server.  I am considering replacing the switch mode power supply with a linear power supply, or the iFi SPDIF Purifier2.  
 

For the LPS, since I am not planning to spend a lot of money, I am going to try one of those from China which the quality is a bit of an unknown.  But I think it should still be better than the original power supply.  

For the I Purifier2, I read it reclock the signal going into the DAC.  However, the APL convert the signal to DSD first.  I am guess that conversion should do some clean up or reclocking, so I am not sure if the iPurifier will be beneficial.

Which one do you think will offer a bigger improvement?  

 

gte357s
jerrybj
858 posts
 

Although not cheap, the Ediscreation Fibre Box II looks a neat and tidy way to clean up your signal from ethernet to fibre.

https://ediscreation.com/product/fiber-box/

https://www.howenint.com/products/fiber-box-ii

mofojo
2,184 posts
 

Depends on what you are trying to do. The IFI spdif thingy makes a pretty big difference if you have a sh…y feed. For tv optical out makes a BIG difference. It was a difference with the Node 2 to the same dac but not that much. 

gte357s OP
281 posts
 

Just an update, I bought a LPS from China for $200 and there is a significant improvement over the switch mode power supply.  The most obvious improvement is the bass.  Money well spent.

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