My pair of Khartoago monos arrived today.  They appear to be no worse for the shipping and sound nice.  I will post a report later on when I get them burned in.  Right off the bat with less than 2 hours on them, I think they are a better match for my 4 ohm speakers than my previous tube amps.  I hear more "life" and "energy" in the recording I am familiar with.  I suspect it has to do with the added current delivery compared to my 45 watt tube amp.    So with less than 2 hours, the Khartago monos sound great 

.  I will let you know how they develop.