The Onkyo A-9010 is the single best amplifier I've heard for anywhere near the price. IMO, it should be the default answer to the “budget amplifier” question that gets asked so often :
A-9010 Integrated Stereo Amplifier
Primare I15 PRISMA MK2 + Concept 30
Onkyo A-9010
Onkyo A-9110 Review | The Master Switch
Denon PMA600NE-BK con Focal Chora 806 BK - Audio y Cine
Fabulous Affordable Hi-fi - Edinburgh
Connect SVS PB2000 to Onkyo A9010 with volume control? : r/audiophile
Wiring a subwoofer at speaker level. | AVForums
Yamaha A-S301BL Vs Onkyo A-9010 | Powered subwoofer, Yamaha, Best speakers