best preamps


can someone recommend best preamps
Thanks!
jhamond987
I say PS Audio Signature PreAmp, it’s $6000.00 but worth it. It works great even with high efficiency speakers. Mine are 97db efficient and there are several YouTube videos about the making and the sound. 
To my ears, after having owned Gryphon, being familiar with Soulution, have heard MBL and some others, CH Precision L1/X1 is the one.