Music Direct had the Noise Harvester on sale so I bought 5 after reading up on the device online. I bought 5 of them based on the ‘more is better’ tout.
Previously (years ago) I’d followed Jon Risch’s DIY instructions and created a ‘conditioner’ for my preamp and other low-power equipment by putting two (2) 450VA isolation transformers back-to-back and then putting 14uF of A/C rated capacitors between (across) the output-input of the back-to-back connection. It has worked for several decades without problem.
So I receive the 5 Noise Harvesters and immediately (unthinkingly) plugged one into the output of the back-to-back capacitor-filtered isolation transformers - and nothing, no blinking LED. WTF, was the device dead out of the box? I unboxed the other four Noise Harvesters and plugged them directly into A/C outlets in my music room (living room). Their LEDs started blinking like crazy! Removing the Noise Harvester from the isolation system and plugging it into a direct A/C outlet and it started too blinking like crazy.
There’s now all five of the Noise Harvesters plugged into the two dedicated 10g ‘music only’ A/C lines in the music room. All of them now blinking very rapidly (light 'pollution in the room for sure). I hear a new smoothness to music, and it seems less fatiguing.
Clearly the Jon Risch back-to-back capacitor filtered isolation transformers trick is working very well in my system. NO blinking from a Noise Harvester plugged into it. I live in a urban area - but where’s all the noise pollution coming from? I’ve had to mask the LEDs of the Noise Harvesters due to their light output. They are all blinking at significant rates. Anybody got any clues as to what kind of noise the Harvesters are eliminating in my system?
Am I to interpret that given the blink rates of five Harvestors in one room that ‘even more’ Harvestors’ would improve matters? One wonders?