Burmester 948

[m.tonetti]

Originally Posted by joeinid

I discovered DC on my mains when I had my Spectron amps. The transformer hum was unbelievable. Every other amp I've had was quiet. The way I am getting rid of the DC is to use 2 PS Audio Humbuster III's in series and that kept the Spectrons totally silent. So to this day I continue that tradition. Power re-generators like the PP2000 and the PS Audio PPP strangely do not remove the DC by themselves. I am not sure why. At some point, I will try the 948 and see if it helps.

Please post your experiences with this unit, I am very curious.

Joe

I solved the same problem with my Nagra VPA using the PS Audio Humbuster III: Humbuster-III
Much cheaper than Burmester 948!

Read these articles below:
why-do-transformers-hum
finding-and-fixing-hum

[joeinid]

Originally Posted by TommyC

Could the DC be generated by other electronic equipment, then leaked into the line? I don't believe the sockets in PP2000 are isolated from one another.

I am sure that's it, I just can't figure where it's coming from, it's an old house and I will get new lines installed as long as it's not too big of a deal.

Originally Posted by m.tonetti

I solved the same problem with my Nagra VPA using the PS Audio Humbuster III: Humbuster-III
Much cheaper than Burmester 948!

Read these articles below:
why-do-transformers-hum
finding-and-fixing-hum

They work great!

Thanks.

[Bubbleboy76]

I have the 948, and I really like it.
Before, my system usually sounded better in the night than in the day. Now it is more consistent.
I also experience that all instruments sounds more in tune in some strange way. Hard to explain. Like every single instrument were slightly slightly out of tune before.

[joeinid]

I'll have to try it and see if I hear any benefit. Thanks for the input!

[jdebonth]

I took delivery of a Burmester 948 today and it's up and running. I will post impressions later when I get have spent some time with it and have had a chance for some proper AB testing. So far everything seems more articulated and natural sounding... kinda like those moments when your system just seems to sound it's best...



It's an older unit from 1996 however flawless cosmetically and after a call with Burmester it seems the only difference with the new units is that the power cord is permanently fixed to the back of the unit. In late 2011 it had a 600 euro maintanance job at Burmester so for 1100 eur shipped it was a no-brainer...

So far so good.... and most importantly: no more hum in the 911!

[Masterlu]

Great to hear about the hum being gone! Here in the USA, the new 948 has a removable power cord.

[bart]

Originally Posted by jdebonth

I took delivery of a Burmester 948 today and it's up and running. I will post impressions later when I get have spent some time with it and have had a chance for some proper AB testing. So far everything seems more articulated and natural sounding... kinda like those moments when your system just seems to sound it's best...



It's an older unit from 1996 however flawless cosmetically and after a call with Burmester it seems the only difference with the new units is that the power cord is permanently fixed to the back of the unit. In late 2011 it had a 600 euro maintanance job at Burmester so for 1100 eur shipped it was a no-brainer...

So far so good.... and most importantly: no more hum in the 911!

That is a good deal you made!

[joeinid]

Originally Posted by bart

That is a good deal you made!

Looks beautiful. Can't wait for the update. Maybe I'll have to try one.

[Rocco]

The first models of 948's had the fixed powercord (blue color) and the Burmester Logo punched on the front panel on the left side. In the past years, the 948's has the removable silver power cord 2.5 and the Burmester Logo punched on the front panel on the right side.

[Pbnotlive]

I first bought the 948's little brother-the 038 with 300 watts of DC offset compared to the 948's 500 watts and and two more plugs. The 038 made an immediate improvement in the sound of my system (911 monoblocks driving 802 B&Ws 350 Hz up and 2.5Kw "Roadie amps for 350 down. also 10 AR 1W 12" woofers for stero subs driven by two more Rodie amps). The difference was even easy to hear on my cable TV feed.

I then bought a 948 and replaced the 038-better-more of what the 038 did. Then I added the 038 to the other side of the AC line (I have two 10 gauge dedicated AC lines balanced across the neutral). Better again!

Then I balanced the left right power amps across the "balanced" AC lines. The result was much more stereo separation and a bit more sound stage. All in all a dramatic improvement in all sound sources with no compromises in any other area. I have no other experience with AC conditioners.