NuPrime PRA-9X Preamplifier

NuPrime PRA-9X is a pre-amplifier with a fully balanced design and includes a MM phono input. The input and output use a special audio Relay Switch, which has the lowest interference and highly accurate transmission, to switch the source. The phono input has a variety of settings for input resistors and capacitors to match different MM cartridges.                                                                                                            PRA-9X phono amplifier is a 2-stage RIAA amplifier that utilises NJR MUSES8820 audio quality op-amp to provide an accurate RIAA curve and low distortion at high amplification and performance. Line Outputs include four NuPrime’s new ultra-low distortion amplifier modules (THD=0.0004%) composed of MUSES8820 op-amp in a new amplifying circuit.                    It has excellent ultra-low distortion and high driving force characteristics. Precision Volume Control The PRA-9X features digitally controlled volume adjustment with fine 0.5dB steps and memory recall. It uses high-conductivity analog switches and integrates high-precision internal chip resistors. Unlike conventional digital attenuation, each volume step activates a dedicated analog switch, minimizing audio degradation and preserving sound quality. This design delivers exceptional channel separation and ultra-low harmonic distortion, achieving outstanding performance with a signal-to-noise ratio (S/N) of 114dB and total harmonic distortion (THD) of just 0.0004%. These characteristics ensure high-fidelity electronic volume control. The system employs independent 4-channel volume control (L+/L-, R+/R-) for a true fully balanced architecture. At this price point, a fully balanced high-end preamp like the PRA9X is a rare find, offering unmatched cost-performance (C/P) value and exceptional overall performance. Features LP vinyl RIAA phono amplifier circuit, with adjustable input capacitance and impedance. Input and output fully balanced preamp. Utilizing the MUSES8820 bipolar-input dual op-amp module, PRA-9X can reproduce the presence of an orchestra as experienced in a symphony concert and the breathing sound of a player in a live music house. NuPrime’s next generation current booster circuit, providing top 0.0004% (7.5Vrms) THD performance and 114dB signal-to-noise ratio (S/N). High-performance headphone amp output. Input and output Trigger for power on/off control of multiple devices.