Just got these today to see if they would cure my hissing problem due to high gain in both pre and amps and 94db efficient speakers - they work perfectly and don't seem to affect music quality at all which surprised me! So.. I'm going to proceed with a 0 gain solution and will not need these. I waited almost 2 week to get them from England. Retail was $57 and I will sell for $50 shipped within CONUSA. Paypal preferred
