The Morgan SW50R starts with the circuit from the SW50 and then adds three spring tube driven reverb. The SW50R offers the same tonality of the SW50 including its ultra-sensitive pick attack and singing sustain. The SW50R reverb is also run parallel to the original tone stack. This means when the reverb is not being used it is totally out of the circuit unlike most other guitar amp reverbs.Intentionally designed to be the loudest cleanest it could be with 2x6L6s it is still capable of producing a warm compressed natural overdrive. The SW50R utilizes a special level control. Its job is to control the amount of gain available in the power section of the amplifier. You will notice after about 3 o’clock on the level control you are adding overdrive to the power section. This allows you to use the level control at lower volumes without sacrificing your tone. The bass, mid and treble controls interact with each other to give you a wide range of tones. The Bass Emphasis switch changes the center point of the mid frequencies allowing you to get even more bass out of the amp. The bright switch is designed to bring in enough top end for even the darkest guitar but without adding any ice picky highs. This amp was designed to be that familiar black face styled tone from the mid 60’s but with added clarity and string to string definition that is unrivaled in any similar design. The SW50R is also a stage and studio monster. Currently on tour with Kenny Chesney, Jake Owen, Chris Young and Frankie Ballard. If you listen to modern country music chances are you have heard the SW50R. Handwired in the USA.