101 db Zu Definition 4 with an Art Audio dm VPS tube pre amp and Art Audio Carissa 16 watt SET tube amp- not a hint of noise at full volume, ear at tweeter, with no music playing.
I suspect tubes? As mentioned above, try rolling your pre amps tubes. I have had noise in the past but corrected this by simply removing a noisy tube.
I suspect tubes? As mentioned above, try rolling your pre amps tubes. I have had noise in the past but corrected this by simply removing a noisy tube.