i was just reporting my own experiences, as you asked, those were not recommendations
within your budget and as an actual recommendation, i would recommend a modest hegel integrated (h90, 95, 160 and so on) as an outstanding mate for harbeth c7’s - outstanding bass control/prat, uber clean treble that accentuates great imaging, and pure midrange that takes advantage of the c7’s greatest strength... if you want some tubey goodness, run an mhdt nos r2r tube dac upstream