Janus preamp hum and hiss

Tech Questions Regarding any of the Custom Products we have here at Vintage Vibe

Janus preamp hum and hiss

Postby Rune on Wed Jul 15, 2009 10:12 am


I have a Janus rail preamp, that I bought from you a while back. i have the 5-pin powersupply also. Is the Pre-amp supposed to have hum and hiss, or is there something wrong? Its A 73 stagepiano, and the original preamp didnt manke any noise, but it also didnt need a powersupply.

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Re: Janus preamp hum and hiss

Postby chriscarroll on Tue Jul 28, 2009 4:11 pm

Hi Rune,

There is never supposed to be a hum on a pre amp, it's obviously coming from the power supply, most likely from the 220V conversion. All of our power supplies and pre amps are checked completely before leaving. A pre amp will rarely cause hum, must be from the power supply. Original pre amp was passive with no electronics. Best, Chris
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