SS Integrated Amp. for PSB Synchrony One B (Bookshelf Speakers)

Looking for the SS Int. Amp. that would have nice synergy with PSB Synchrony One B (bookshelf speakers). So far I am using NAD C375. Great bass but the lack of details and transparency. My room is 17' x 11' x 8', speakers are positioned along with the long wall on the Sound Anchors single post stands. Preferred music is urban jazz, sometimes classic dance music on the moderate level. The speakers are nominal 6 Ohms, minimum 4 Ohms. My budget is $3000.00. I would really appreciate your recommendations.
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