Great speakers. Are you using them with tubes or solid state?
Long ago - perhaps more than 10 years ago - I used them with XLO signature 5.1 and later Transparent Reference XL - Forsell CD combo, cj ART and Krell KSA300s. They could not play at low levels, but at medium/high volume they filled a room with music better than anything comparable. Do not miss listening to VTL007 'Louis' recording track 6 "La fiesta" on them if you have friendly neighbors !
A friend of mine had a great sound with Van den Hul revelation with an old Audio Research Classic150.
