Dan d'Agostino MOMENTUM: Sonic Character like pure ClassA/SE despite low Idle Power ?

[tiefbassuebertr]

Who have heard in the meantime this monaural power amplifier?

Here some URLs:

D'Agostino | Master Audio Systems | Extraordinary New Creations from the World's Most Famous High-end Audio Designer
Dan D'Agostino Momentum | Flickr - Photo Sharing! (HR-Foto)
New Music Forum - NMF • Afficher le sujet - Dan d'Agostino MOMENTUM. (Fotoserie)
Dan D‘Agostino Momentum Mono-Block End-Verstärker - sempre-audio.at (Deutsch)
Krell Founders Sue To Make Return - 2009-12-07 07:00:00 | TWICE
Product Information
Dan D?Agostino's Momentum | Stereophile.com
Dan D'Agostino Discusses His New Momentum Monoblock Amplifier - YouTube
http://www.diyaudio.com/forums/everything-else/157478-dan-dagostino-removed-krell.html
http://www.diyaudio.com/forums/lounge/179714-dan-d-agostino-interview-papa-one-best.html

 

[tiefbassuebertr]

really nobody have heard this monaural devices ?

 

[pinkmouse]

This should not be in Pass Labs, so I've moved it.

 

[tiefbassuebertr]

This should not be in Pass Labs, so I've moved it.

Have a look to the last URL from my post #1.
This was the reason why I have filed this about PassLabs.

 

[bear]

Says on his site - the transistors (28, iirc) run at 68mHz!

What does that tell us??

_-_-bear

 

[Zen Mod]

68mHz

that's pretty low

 

[bear]

for what?

a good freq for a parasitic oscillation?

_-_-bear

 

[adason]

i heard the amp at rmaf
it sounded ok for class ab
i would not spent $40 grand on it

 

[vacuphile]

The art of cabinet making and finding the most places to put your name on in one single device.

 

[jez]

Just read the review in "HiFi News"... it reads like it was written by the marketing department of the manufacturer.

 

[bear]

I question if it is indeed class AB?
Why the mention that the output devices RUN at 68mHz then?

_-_-bear

 

[adason]

i have no idea what that 69MHz has to do with anything...unless its a classD amp

this is what I found on the web:
"A 1.2kVA power transformer is packed into the compact chassis and in the tradition of Krell, the company that he cofounded 30 years ago, the new amplifier puts out 300W into 8 ohms, 600W into 4 ohms, and 1200W into 2 ohms, all with class-A/B biasing. Yet, there was nothing about this system that sounded like class-A/B amplifiers. Driving Wilson Sashas, the sound was warm, fast, open and generous—tonally and spatially. Voices all sounded balanced, life-like and three-dimensional. Dan told me a matching preamplifier is on the way. "

...it talks about class AB

its surprising how little dan talks about real circuitry, mostly about the aluminium body and copper heatsink and watch like power gauge...marketing, all is just marketing

 

[MiiB]

In the interview he talks about a low feedback design with only 8-10 dB overall feedback, but more around the output devices that need heavier feedback to perform well...sounds a bit like two split feedback loops..

He was also talking about plateau bias, so that the bias changes with the signal.. and climbs with the level..as it's called for...(may not apply to this product).

 

[jacco vermeulen]

Look Ma, i like to parallel stuff : www.bm.rs/Agostino/Agostino Momentum HiFi NewsJuly 2011.pdf

 

[tiefbassuebertr]

because I haven't a broadband internet connection (very slow downlink rate) I am looking for a text about the interview about
http://www.diyaudio.com/forums/lounge/179714-dan-d-agostino-interview-papa-one-best.html
to reading this Interview.
Perhaps then one know more about the basic internal circuit topology.
Independend of this - I have heard about a simplified schematic anywhere on the web.
Perhaps one of the members here know the appropriate URL.

 

[bear]

wonder who he hired to do the design...

😀

_-_-bear

 

[jacco vermeulen]

How's about Mr Levinson ? 😀
Nààààh.

 

[adason]

Look Ma, i like to parallel stuff : www.bm.rs/Agostino/Agostino Momentum HiFi NewsJuly 2011.pdf

thanks for the link to the review Jacco
dan's amp distortion is not that impressive
even my 30 years old JVC AX3 has better parameters at 0.007% distortion

one thing I hate about all those idiots using the phrase "blistering 69MHz"
like it has anything to do with audio...

 

[jacco vermeulen]

amp distortion is not that impressive

Actually, the distortion figures/graph of the Momentum are pretty interesting.

 

[Soothsayerman]

Looks like a fancy bathroom scale