High Current Transformer?

[TheSoundMann]

So I am at the point to where I'll have to build a "power brick" in order to use my PS Audio IVH.

The company offered a high current version that is suppose to elevate the sound of it.

Before I go nuts and order a 600va unit for this thing, I want to know how much current is reasonable.

I found a 300va @ 5.4 amps. But wouldn't even this one be overkill?

 

[scholl]

I don't know the current\power draw but would think 1A would do it.

 

[TheSoundMann]

This preamp is a fully discreet model with a dual mono phonostage, so 1A is underspecced.

 

[jan.didden]

1A is most likely way overspecced; that's 120VA (say 100W) for a mains tranformer on 120V at 1A ...
It is a preamp. Lets say it ouputs 10Vrms into 10k of the power amp; that's a whopping 0.1W per channel.
There may be more internal power draw from the power supply.
Again, let's be reasonable: half a dozen transistor stages per channel at 10mA on +/-15V = 12 * 300mW = 3.6W.

Jan

 

[TheSoundMann]

You should see the circuit in this thing. It has more transistors alone than a high powered amp. We are talking 2 dozen per module. The power supply alone is a large timed affair.

It was offered with a high current power brick that is said to be large enough to power an amp, which indicates atleast 300va!

 

[EdGr]

Any energy that goes in has to come out. 🙂 Large heatsinks would be needed to dissipate 300W.
Ed

 

[jan.didden]

There's no heatsinks on any of the devices, not even on the voltage regulators in the picture I have seen.
Flea power stuff. That doesn't mean it is not good (sound) quality.
But hey, if I sold power xformers, I would recommend big ones too ;-)

Jan

 

[TheSoundMann]

The big, heavy transformer option is said to catapult the sound of this preamp into one comparing to one that sells for over 3 times as much. Many have vouched for this.

The transformer in question has to be metal in order to dissipate heat?

 

[jan.didden]

Or you can use a wooden transformer that has zero iron losses.

Jan

 

[TheSoundMann]

Perhaps I will invent a new type of transformer/power supply that converts heat into energy.

 

[jan.didden]

I think you are several decades, maybe centuries, too late for that.
Heat = energy already ;-)

Jan

 

[TheSoundMann]

My brand of humor has often goes underappreciated.

I realize that excessive heat without the proper management of it is detrimental to the longevity of a component.

I plan to use this preamp in its buffered passive linestage mode, so I don't need the extra current.