Perhaps consider the little ARC VSi-60. I've heard good things about the synergy with this amp and Harbeth speakers.
I've been using the closely related Audio Research VS-55 to drive Harbeth C7es3's and now M30.1's - I think its a great combination. Tube sound, but with a nod to neutrality. Harbeth's are smooth and natural by nature and don't require any additional euphony to sound right. This amp sounds 'right' on every type of music.
New, the VSi-60 is just above your friends price range, but ARC stuff has stellar build quality and they're one of the few that will likely still be around to back up their product 20+ yrs down the track if required.
The only other sticking point is the manual biasing. This is ridiculously easy on the VSi-60 - external jacks, the same as my VS-55. My VS-55's bias is very stable, but tubes age so this still needs occasional (slight) adjustment to maintain optimum sound quality. It's so quick and easy with this amp it shouldn't be an issue. Typically, self bias amps are wasteful of output power compared to fixed bias (though some amps use the latter with with additional circuitry to auto adjust).
I've been using the closely related Audio Research VS-55 to drive Harbeth C7es3's and now M30.1's - I think its a great combination. Tube sound, but with a nod to neutrality. Harbeth's are smooth and natural by nature and don't require any additional euphony to sound right. This amp sounds 'right' on every type of music.
New, the VSi-60 is just above your friends price range, but ARC stuff has stellar build quality and they're one of the few that will likely still be around to back up their product 20+ yrs down the track if required.
The only other sticking point is the manual biasing. This is ridiculously easy on the VSi-60 - external jacks, the same as my VS-55. My VS-55's bias is very stable, but tubes age so this still needs occasional (slight) adjustment to maintain optimum sound quality. It's so quick and easy with this amp it shouldn't be an issue. Typically, self bias amps are wasteful of output power compared to fixed bias (though some amps use the latter with with additional circuitry to auto adjust).