D'Agostino Relentless Mono Power Amplifier meter

[celef]

D'Agostino Relentless Mono Power Amplifier | Hi-Fi News

In use you'll regularly see that needle flicking up beyond 300W, but this is 'fake news' - the meters are made to move all the time so that 'users are confident something is going on', admitted Dan, 'fun to look at, but please don't take the numbers too seriously'.
Decorative By Design
Why? Simply put, the early Momentum amplifiers had accurate meters and, with typical real-world outputs being just a few watts for much of the time, the needles were barely moving.

what is this, a toy? and this on:

So this is the first and possibly the only full and independent technical test you will read of the hi-fi world's most luxurious, most powerful, heaviest and costliest amplifier... ever.

 

[adason]

technics used to have sexy meters on their top model amps, often rated to 1000 watts, but they were smart enough to have the meter sensitivity switched up to 10x or 100x, so you could measure wattage out to 10 or 100 watts

 

[BigE]

bipolar or mosfet?

 

[cbdb]

TECHNICS SH-9020 | Vintage HiFi Pictures has a meter that has a 50db range and switchable sensitivity. But

Any power meter that dosnt measure the current is not accurate. At a constant voltage out if you change the freq ( the meter reading wont change) the speaker current and power will change with impedance, especially around the speaker resonance where a 8 ohm speaker can be 30 ohms, and at some freq its 6ohms, thats 5 times power difference depending on freq. So pretty much all power meters are just guessing. But they can tell you if the amp is clipping and they look nice.

 

[cbdb]

Just looked at that amp. The most useless meter Ive ever seen, not even logrithmic. Since most people never use more than 10 watts that meter will hardly ever move. And only $125k. Its like putting a 2000mph speedometer in a car. The marketing department designed that meter.

 

[tomtt]

The marketing department designed that meter.

How long,

Has Dan been making amplifiers, for sale?

At least 40 years, right?

He has evidently learned more,

Than advanced circuit design ....

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Having read the article,

It may be important to note,

Each amp can pass 400 amps.

 

[analog_sa]

bipolar or mosfet?

D'Agostino despises mosfets.

His amps may be among the world's best but the looks is what really turns them into icons. Who cares what that meter shows? It is a design element rivaling the best Swiss timepieces.