Im late to the party but for anyone interested... I have LaScala AL5's and have tried:
Pass Labs INT-250 (15 Watts Class A)
Pass Labs XA60.8 Mono (ALL Class A)
Cary SLI 80HS
Yamaha 1200
Pass Labs INT-60
Naim Atom
Willsenton R8 Tube Amp
Luxman 590 AXII
The top 3 for my ears and room (13X18) are the Pass Labs INT-250, then the INT-60 and then the Luxman. The XA60.8 monos are nice but overkill for. the LaScala. Pass Labs has a nice synergy with the Heritage line. A bit fuller than the Luxman, and just as detailed and expansive. The INT-250 has a bit more sparkle than the 60 but the 60 has more density to the midrange, just a hair. Soundstage is slightly bigger with the 250 as well.
If I was buying an all new amp for the LaScala today it would be either the INT-250 or the INT-60. The INT-25 would be an option as well, though that has less mid bass warmth than the 60 and is somewhere in between the 250 and the 60.
The worst pairing was with the Naim Atom, just too bright with the LSAL5. The Yamaha was a tad dry sounding. The Cary was nice but not in the same league as the Pass or Luxman. The R8 was nice and meaty but less refined. I have yet to hear anything better than Class A Pass with the LS speakers. I have not yet tried a SET amp with them though.
Pass Labs INT-250 (15 Watts Class A)
Pass Labs XA60.8 Mono (ALL Class A)
Cary SLI 80HS
Yamaha 1200
Pass Labs INT-60
Naim Atom
Willsenton R8 Tube Amp
Luxman 590 AXII
The top 3 for my ears and room (13X18) are the Pass Labs INT-250, then the INT-60 and then the Luxman. The XA60.8 monos are nice but overkill for. the LaScala. Pass Labs has a nice synergy with the Heritage line. A bit fuller than the Luxman, and just as detailed and expansive. The INT-250 has a bit more sparkle than the 60 but the 60 has more density to the midrange, just a hair. Soundstage is slightly bigger with the 250 as well.
If I was buying an all new amp for the LaScala today it would be either the INT-250 or the INT-60. The INT-25 would be an option as well, though that has less mid bass warmth than the 60 and is somewhere in between the 250 and the 60.
The worst pairing was with the Naim Atom, just too bright with the LSAL5. The Yamaha was a tad dry sounding. The Cary was nice but not in the same league as the Pass or Luxman. The R8 was nice and meaty but less refined. I have yet to hear anything better than Class A Pass with the LS speakers. I have not yet tried a SET amp with them though.