Sorry about your less than happy experience with your HIII's. I have never owned or even heard HIII's but do own HI's and HII's and have been more than pleased with their performance. I have tried many different receivers, integrated amps, pre-amp/amps with both pairs and have been totally amazed how amplifier friendly they are in my rooms. From 200w/ch Acurus amps to an NAD AVR to a Luxman R-117 to a Cambridge Audio 640A V2 integrated. All combos had their strengths and weaknesses but all were very listenable and all volume levels with spot on imaging and fast punchy midbass/upper bass.
My suggestion is to experiment with placement, toe-in, and amplification.
Bill
My suggestion is to experiment with placement, toe-in, and amplification.
Bill