Good morning everyone. Some time ago I bought the IFI ZEN PHONO phono preamplifier.
I am satisfied with its performance. If I compare it to other preamps I've had, it seems pretty good.
The only thing I have noticed is its low output level when using the MM selection (36dB), but I have solved it by using its balanced output that adds 6dB of gain.
I have seen that there are power supplies for sale with better features than those that come in the original package and that, according to what they say, improve their performance.
My question is: since it is powered by a 5 volt source (which later becomes +12 -12 volts with an internal switching source), could a 10000 mA power bank be used instead since it also supplies 5 volts?
It would be 5 volts DC pure, without the ripples and interference of the network.
Would it be an improvement compared to the wall wart that it originally brings?
Cheers
I am satisfied with its performance. If I compare it to other preamps I've had, it seems pretty good.
The only thing I have noticed is its low output level when using the MM selection (36dB), but I have solved it by using its balanced output that adds 6dB of gain.
I have seen that there are power supplies for sale with better features than those that come in the original package and that, according to what they say, improve their performance.
My question is: since it is powered by a 5 volt source (which later becomes +12 -12 volts with an internal switching source), could a 10000 mA power bank be used instead since it also supplies 5 volts?
It would be 5 volts DC pure, without the ripples and interference of the network.
Would it be an improvement compared to the wall wart that it originally brings?
Cheers
10A for a phone preamps looks too excessive although it may do the job. Ripple usualy is cancelled by the converter if properly designed them.
Saludos del otro lado del charco.
Saludos del otro lado del charco.
The source that comes in the package is a common switching wart. That's why I ask if a battery wouldn't be better.
Thanks for your opinion. Greetings neighbor.
Thanks for your opinion. Greetings neighbor.
Those SMPS switches over the audio band, 50KHz or more. Thus the noise they generate not only are inaudible, they are also severely attenuated by RIAA amplifier.
"10000 mA" may mean "10000mAH", milliAmp Hours. Which will charge a cellphone 2 or 3 times.
Assuming the preamp and its losses amount to 100mA at 5V, the 10000mAH will run for 100 hours or 300 LP sides or 3 hours a night for a month.
That seems extravagant, but "10,000mAH" batteries are "$10" to $40, so are not expensive by Hi-Fi standards.
