Our mission is to create new and exciting devices for use in the recording studio. Our criteria for design is based only on usability, sound and reliability. We believe your ears are the most sensitive test gear on the planet.
NPNG started building Mic Pre-Amps in 1995. Virtually all of the original units are still in use today. The occasional service requests we get are all related to mechanical damage. The circuits are robust and reliable. Built with the finest components available, the QMP4 and DMP2 will yield many years of trouble free use.
NPNG QMP-4NW Architecture
2 Discrete 13 Transistor Class A Op Amp Stages Per Chan.
Discrete* 7 Transistor Front End
Min. Gain 30dB, Max Gain 74dB (to produce 0 VU)
Input Attenuation PAD Variable -4 to - 40dB Range
NPNG QMP-4NW Typical Performance:
EIN Better Than -127dB 20Hz-20kHz @ 40db Gain Unweighted
Odd Order Harmonic Distortion @ +40dB Gain / 400Hz:
+4dBu to + 23.8 dBu Below .001%
Residual Noise below -89dB 20Hz to 20kHz @ 30dB Gain Unweighted
Onset of clipping +24.4dBu
Input Impedance 5K Balanced
Output Impedance 600 Ohm Balanced
Transformerless Balanced Inputs
Balanced Outputs Using Jensen Hi Nickel Transformers