For the amount of money you specify, your best bet might be a top quality integrated amp, such as the Bryston B-60, the Creek 5350SE, or the Musical Fidelity (sold by Audio Advisor).
Best combo for $1500 could be secondhand McCormack DNA-1 or DNA-.5 amps and the TLC-1 or get lucky ALD-1 pre. Nondeluxe DNA-1's are going for $800 somehow, and saw a deluxe .5 for right around there recently. That leaves $700 to find a McCormack pre. Good luck.
Spectral DMC-10 and DMA-50 for around $1500. Very high end and very high resolution. Beats any combo mentioned above plus Spectral service is first rate.
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