Spendor SP1/2E: Best Integrated Amp to Use?

Considering a new or lightly-used integrated amp (tube or SS) to replace the aging Linn LK-1/LK-2 combo currently driving a new pair of Spendor SP1/2E's, and would appreciate opinions, esp. from those who have used these loudspeakers. CDP is a Planet 2000; TT is Rega P2 (soon to go for Nottingham or VPI Scout?). What really makes the SP1/2E sing? The Linn system I have seems to lack grunt and resolution, although the sound is quite musical. I listen to all musical styles, usually at moderate SPLs. 14X14 room.

Looking for nominees at two levels:
1. under $1000 (new or used)
2. under $2000 (new or used)

Thanks, Jim