Reamping made simple. The Radial ProRMP Studio Reamper is a 100% passive Reamper and does not require any external powering. The magic behind the ProRMPs great tone is a custom wound transformer that converts the balanced line level source to a hi-z output for your amp whilst acting as an electrical isolator- eliminating troublesome ground loops that can often cause buzz and hum in the sound. Extremely easy to use the ProRMP connects from the recorder to your amp and effects units performing all required impedance matching for you. Just adjust the level to suit! The ProRMP is built tough encased in 14 gauge steel housing with a I-beam frame that protects all internal circuitry from damage. A full-bottom no-slip pad provides plenty of stay put while also electrically isolating further reducing any unwanted noise caused by ground caused by ground loops. Specifications Audio circuit type: Passive transformer isolated Frequency response: 20Hz 20KHz (+0/-1dB) Dynamic range: >137db Equilavent input noise: >-98dbu Noise plus gain Phase deviation: 0.3° @ 100Hz; 5° @ 20Hz Gain: >-10db Maximum input: >+26dbu Total harmonic distortion: 0.003 Common mode rejection ratio: 100dB @ 60Hz (unbalanced source) Input impedance: 600 Ohms Output impedance: 600 Ohms balanced Noise: -111dbu Signal to noise ratio: 81db Input pad: -15dB 180° polarity reverse: Inverts signal polarity Ground lift: Disconnects pin-1 at XLR output Merge: Input summing mixer Speaker filter: -30dB pad and band-pass filter XLR configuration: AES standard (pin-2 hot) Power: Passive no power required Construction: 14 gauge steel chassis and outer shell baked enamel finish Size: 3.3″ x 5.0″ x 2″ (84 x 127 x 48mm) Weight: 1.55 lbs (720 g)