Amplifiers come in many forms, integrated stereo, stereo power amplifiers, home theatre multi-channel amplifiers, etc. Here at Audio Tweak we focus mostly on Stereo. For unlimited power, get the Sanders Magtech amp, for bags of finesse and excitement go for the Linear Tube Audio ZOTL amps, want solid-state amplification and desire tube-like musicality and sweetness without the maintenance of tubes, the Wells amps are the best, for your first entry into tube amps go for the Jolida amp. All depends on what speakers you want to drive. For sensitivity below 83DB speakers we recommend the Sanders Magtech amplifier, for over 84DB we recommend the ZOTL 40 OTL tube amplifiers or the Wells amplifier.