“Miraculously, it manages to combine the virtues of modern tube sound with the tonal heft and timbral realism afforded by vintage tube preamps. If purity of expression and tonal realism are two of your sonic priorities, get ready to embrace the EVO 400. In a nutshell, it’s an insane audio bargain that delivers pure tube magic.”

“The PrimaLuna EVO 400 dissolved into the music more completely than the others. It seemed the most highly resolved and naturally transparent. Class A all the way.”

“The EVO series is appropriately named. With nearly 20 years of evolution behind them, all the improvements that have been made from generation to generation add up to something truly spectacular. ... the EVO 400 preamplifier delivers a level of sonic performance that is not uncommon in preamplifiers in the $10k – $30k range.”