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Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it.

You may not have heard the M51 at its best...

When I first received mine, I put it in the system between my Pioneer DV-47ai (transport) and Cary SLP-308 line stage, feeding a Parasound A23 and Ascend Sierra 2 monitors. In fixed gain mode, the M51 was more resolving and dynamic then the internal DACs and output stage of the Pioneer (paralleled BB 1738s, if I remember correctly) but I wasn't bowled over by the improvement.

When I removed the line stage, and ran the M51 as a digital preamp with volume control straight into my amplifier, I got what I was looking for... Transparency, detail, and slam.

I think the M51 does its best when used in this context... And that won't suit everyone's needs.

I continue to be very impressed with mine!

edit: I also note that you were using the HDMI output of the Oppo to feed the M51. I also use the HDMI inputs on the M51 for video sources, but my observations here are based on two-channel PCM over s/pdif (coax and optical)

SF






Edits: 10/18/16

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  • You may not have heard the M51 at its best... - SF tech 19:38:48 10/18/16 (4)

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