Spectron Musician trun on noise / tweeter hiss

Does using a cable-music input reduce the tuner noise? If so, then you need to work on your antenna lead, if not, do you have a long enought IC to try moving the tuner seveal feet further away to see if that solves or improves the noise issue there.

You've done a lot to stabilize your power supply. Without going to full Power Factor Correction I see nothing more that you can do there.

A last resort, take everything out of the rack and lay it out on the floor as widely spaces as possible, with the amp and CDP at one end and the tuner at the other end. If that helps, then you know what the problem is and you may need two racks, one "digital" and the other analog, or, you might move the amp out of the rack an put it on a floor amp-stand.

Dave

or maybe you can just turn on amp with just speakers hooked up and no inputs to see if the hiss disappears (can this be done without creating another problem?). then start plugging in components one at a time until the hiss appears. you know...troubleshooting.

Unfortunately the hiss remained with ONLY the speakers connected to the amp. The unit has been packed up and will be returned to the manufacturer for analysis.

that is unfortunate. keep us posted as to the final outcome.