Hi guys. I bought my first bit of PS Audio kit a few days ago as a pre Christmas present. It is a previously used P10 in unmarked condition, UK spec, about 3 years old. I have upgraded it to firmware .41.
I have a DAC connected to Zone C and permanently on. The two HC zones D and E are used for my tube power amps and I use the soft start feature to power them up which is very useful. Zones A and B are unused and are off.
My question concerns noises that sound like relays coming from the P10 on a random basis. These noises happen both when the power amps are powered up and also when they are off, ie when just the DAC is connected and powered up. This is not the relay clicks from when I switch those zones on, they are clicks that just happen on a random basis.
The DAC draws about 20W at 240V. The power amps draw about 500w. However I don’t think this is relevant because it happens even when only the DAC is powered.
I have the P10 set for Low Distortion, 235V output, Multiwave, MW Strength 4, Phase Tune 0. The usual THD in is about 2% and out is about 0.1%. Voltage out is maintained at around 234.5V. Voltage in varies between 245V and 253V.
Are there any relays inside the P10 that could activate themselves on a random normal basis? In other words, is this normal behavior?