2. amps-preamps
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Pre-amp causing loud hiss from speakers

I have a BAT VK3i with Quicksilver Horn mono-blocks and Klipsch LaScala's. This setup is dead quiet, however when I recently hooked up Rogue Audio M-180 mono-blocks there was a loud hiss coming from the speakers well past the listening spot. This noise was constant even with the volume down to zero and occurred with either balanced or rca connectors.

When I took the BAT out of the equation there was now only a faint hiss coming from speakers but one had to put your ear to it to hear it. After disconnecting all components from the BAT and putting it back in - the noise returns. I tried a Conrad Johnson Classic and there was no noise.

So does anyone have any ideas as to why the BAK and Rogue Audios amps do not play nice together?

Thanks
Ag insider logo xs@2xdeadlift
dweller's avatar
dweller
3,750 posts
 
I purchased a used BAT VK-300SE which had the same problem upon arrival.
I decided to work with the seller and had to return the unit to BAT.
It was fixed and worked flawlessly thereafter.
BAT said it had a bad "voltage regulator".
BAT graciously fixed it under warranty even after we explained that I was the new owner.
Like the late-great HP used to say: "If it works the first time, it's not high end"...
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deadlift OP
18 posts
 
I will experiment more with the IC's and binding posts, but I fear as noted the gain architecture is way off - oh well part of the journey. I do wonder if it's not inappropriate here to ask what a set of Rogues would be worth with less than 30 minutes run time?

Thanks
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deadlift OP
18 posts
 
I will give it a shot nothing to lose. Those attenuators are RCA would using balanced attenuators make any really difference?

thanks again
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