Spendor D7 vs. Harbeth Super HL5+

With Harbeth SHL5+, assuming room and setup are sorted, try any of the following amps ;
1. Naim NAC282 and NAP250DR or higher
2. Luxman L-509X or L-590AXII

3. LFD NCSE

All of the above will sound different with the Harbeth and the best sounding amps will depend on your listening taste or preference.