Hi. I would like to upgrade my amp and/or speakers. I have a Marantz CD-17 mk II KI signature range CD player, the Marantz PM-19 amp and Tannoy Revolution R3 speakers. I have discovered valve amplifiers and really like the reality and honesty of the sound. I have tried a Conrad-Johnson Classic Sixty pre and power combination. It is good, but quite expensive compared to some integrated valve amplifiers. I am struggling to find replacement speakers. I tried the Tannoy Stirlings from the Prestige Range and ProAc Studio 140 Mk II. The problem is that voices sound harsh and sibilant compared to my Tannoy revolution R3 speakers. Any suggestions? Will the harshness settle as the speakers burn in? Can I modulate the sound with interconnects/cables/valves? or should I be looking at other speakers? Any suggestions would be gratefully received. Thanks, Mark.