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What Dtc said
IMHO your amps are not an ideal match for your speakers. You have way too much gain and even though price does not always indicate quality you have a $3,500 preamp with $300 amplifiers. I think you need to pony up for an amp that is a better match; less power, less gain, higher quality.
To test it don't just power it up with the inputs disconnected, many amps will be noisy when run without inputs. You need some shorting plugs in the inputs then turn it on to see if it hisses by itself. Or disconnect the interconnects at the preamp and short the middle pin to the ring. Stuff a little aluminum foil in there or use a jumper with clips.
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What Dtc said
IMHO your amps are not an ideal match for your speakers. You have way too much gain and even though price does not always indicate quality you have a $3,500 preamp with $300 amplifiers. I think you need to pony up for an amp that is a better match; less power, less gain, higher quality.
To test it don't just power it up with the inputs disconnected, many amps will be noisy when run without inputs. You need some shorting plugs in the inputs then turn it on to see if it hisses by itself. Or disconnect the interconnects at the preamp and short the middle pin to the ring. Stuff a little aluminum foil in there or use a jumper with clips.
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