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Upsampling with PM 165A


Panelhead

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I have been upsampling 44.1/16 AIFF files to 88.2/24 with Pure Music for a while. Quite once when it seemed a little unnatural, then went back. Last six months most listening has been with the 2x Upsampling.

Yesterday, I heard some ditortion on a cymbols track. Thought it was cabling or software related. Today, playing "My Foolish Heart" off Waltz for Debby the distortion was very evident.

Tried swapping Ergo's to see if some of the power supply work was the culprit. The other unit showed it just as much.

Turned the upsampling off and the distortion went away. Turnd it back on and it came right back.

I can on not hear it when there is full range music playing. The brush work spotlights it the best.

Has anyone else seen this effect? It may be may dacs, need to rig up another FW dac to see if it is an Ergo artifact or software upsampling issue.

 

George

 

 

2012 Mac Mini, i5 - 2.5 GHz, 16 GB RAM. SSD,  PM/PV software, Focusrite Clarett 4Pre 4 channel interface. Daysequerra M4.0X Broadcast monitor., My_Ref Evolution rev a , Klipsch La Scala II, Blue Sky Sub 12

Clarett used as ADC for vinyl rips.

Corning Optical Thunderbolt cable used to connect computer to 4Pre. Dac fed by iFi iPower and Noise Trapper isolation transformer. 

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