The Allnic M-3000 Mk 3 KT170-based mono amps are simply everything an audiophile could hope for from tube-based power amplifiers The sonic palette is complete in every way and checks every conceivable box. There is power to spare, reliable and hassle-free performance, and most importantly, breathtaking musical performance. The sound is also customizable via tube rolling, and on the fly pentode or triode mode switching.