I use the amplifier 3XXX eap300 9 years that I love about this amp is that it heats almost no fan is not it all for use in the studio with more power! I test some other earlier stages as a peavey amp or QSC (I always use) is equivalent on the 3XXX level QSC sound quality it has the same characteristics in terms of distortion (so very very low) . I'm very satisfied