To DPM or not? That is the question.

[Rama]

For me the sound with DPM (OFF)= Class D, and with DPM (ON)=Class A/D. I find the Devialet to be more musical when the DPM is switched on, if that makes any sense.

Could it be that with DPM on, the bass is a bit less tight and therefore sounds a bit 'rounder'?

With DPM (ON) the Devialet sounds just right. Instruments sound right, there is a delicacy to them. The decay of piano notes is longer. I compared it to my class A/B power-pre setup and it is a close match. My speakers are Sonus Faber Olympica I so can't really expect much bass from a two-way design. I find the with DPM(OFF) I have the tendency to multitask more and when (ON) the sound is more relaxing.

[whatmore]

Just saw this thread.
To me, on my 120 DPM absolutely must be off.

I had my 120 up for sale after one day because it sounded so awful. Then someone suggested turning DPM off and a year later I’m still loving it.

[Wayne Hicks]

I don’t know the sound levels since I feed my 220 set at 0db with the Hugo 2 at dark blue levels. The clarity is much better with DPM OFF listening to « Sway » Diana Krall FLAC 192/48. With DPM ON, it’s like going back to a Mojo.  For me in this game of diminishing returns « huge » is the difference between a Mojo vs a Hugo 2. The  dynamics are most obvious playing « Billy Jean » DSD 2.8. I’ve listened to a demo HD recording called « dsr005-01-2496.wav » found on the internet. The uprise in the beginning of each note appears faster more rhythmic with DPM OFF. 

I had been listening a lot on my HD 800 directly plugged into my Hugo 2 (which I prefer to using my Bryston BHA-1 for clarity) because my kids are studying. Going back to my speakers and 220 was a bigger drop in resolution than I had remembered. Turning DPM OFF brought back that initial enjoyment I had when I first put this system together.

[Wayne Hicks]

Just saw this thread.
To me, on my 120 DPM absolutely must be off.

I had my 120 up for sale after one day because it sounded so awful. Then someone suggested turning DPM off and a year later I’m still loving it.

Agree 100%

[David A]

To my ears, huge improvement with DPM OFF.

I’d be interested to know what level you’re listening at, and what sort of music, to hear such a “huge improvement”?

I’ve experimented with DPM on and off at levels from between -30 dB to -15dB and I can hear no difference.

Devialet 440 Pro CI
Harbeth SHL5 Plus.



Sent from my iPad using Tapatalk

I'm with you. I don't use SAM and my listening levels mostly range from -25 dB to -15 dB, very occasionally to -10 dB or so. I don't hear a difference.

[watchnerd]

Did you turn off DPM on your D400 because you found that without DPM the sound is better?

What other tweeks in the configuration did you do?

Sorry for the dumb question, but what is DPM?

[Axel]

Did you turn off DPM on your D400 because you found that without DPM the sound is better?

What other tweeks in the configuration did you do?

Sorry for the dumb question, but what is DPM?

Dynamic Power Management. With it engaged, the units run a bit cooler. Some hear a difference and others don’t. I’m in the second camp, but leave it turned off.

[m.dom]

Hello,

I admit that I do not hear any difference with or without DPM. Sometimes, I feel like I do not have a good ear ... or a bad acoustic in my room (probably ;-))

Dom

[m.dom]

Good evening,
Finally, I tested without DPM, without SAM and the sound made me more ... natural.
I will still continue in this direction to test for longer.
What do you think?
Dom

[audio_engr]

I have been following this Thread and for the 1st time since owning Devialet Expert amps tried with DPM = OFF. 

WOW !!!  It makes a Big difference with my B&W 802-D3 that are bi-amped using 4 x 440-Pro and I kinda kept hearing my fav tracks & wondered 'why the heck didn't I turn this thing OFF all this while ? '

I guess I'm going to keep it OFF but I do have to agree with other posters here that set to ON, it is a "bit rounder, more polite" presentation ... 

My listening levels vary from approx. -25dB to -12dB generally, sometimes does go to -9dB or even at times to -3dB so I'll have to monitor unit temperatures closely (only when the Remote hopefully ships back from Devialet France).