What about the C46? They make the C500T and the C100T as well.
I played with the 4 kHz control and it didn't roll off the harshness. In fact at that time I didn't know it was not rolling off up to 20 kHz like a conventional treble control and was trying to figure out the weird rolloff I was hearing. I asked myself why is it rolling of the mid highs and not the upper highs. It was not effective at rolling off the boosted highs heard on many new CDs. Later I checked the owner's manual and saw what was happening. YMMV.