Nuprime IA-9XG

A toggle switch that allows you to select only ODC circuit or ODC with natural harmonics. In Ultra- Low Distortion mode f0, it is typically suitable for studio monitoring or music with many dynamics, such as Rock & Roll. Alternatively, you can increase natural harmonics (2f0) when relaxing and listening to more vocal or classical music.

The ODC class D PWM module include two NuPrime’s new ultra-low distortion amplifier modules (THD=0.0014%) composed of MUSES8820 op-amp in a new delta sigma circuit. It has excellent ultra-low distortion and high driving force characteristics.

NuPrime IA-9XG pre-amp 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. The 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.

Features

• A toggle switch that allows you to select only ODC circuit or ODC with natural harmonics.
• LP vinyl RIAA phono amplifier circuit, with adjustable input capacitance and impedance.
• 1 set of Phono input, 1 set of XL R input, 2 sets of RCA input.
• Digital control (with 99 segments) of analog volume circuit. Automatic memory when powered off.
• Nuprime specially customized audio-specific capacitors, 13200uf and 25A high-current bridge rectifiers, providing fast and dynamic speaker driving force.
• NuPrime’s ultra-low-noise ANC GaN power supply features a dual-phase interleaved GaN Power Factor Correction circuit with Active Noise Cancellation.
• Input and output Trigger for power on/off control of multiple devices.

Revolutionary ANC GaN Power Supply Technology

Advanced GaN Power Factor Correction with Active Noise Cancellation

At the heart of the IA-9XG’s power supply architecture lies a sophisticated dual-phase interleaved GaN Power Factor Correction (PFC) circuit with Active Noise Cancellation. The feedback-based active noise-cancelling system functions much like ANC headphone technology, suppressing power supply noise to the level of a high-end linear supply. This innovative design approach delivers exceptional voltage regulation while maintaining minimal noise levels and achieving ultra-high efficiency. The entire PFC module is housed within a remarkably compact 75 × 30 × 25 mm enclosure, yet delivers an impressive 600 watts of output power.

The dual-phase interleaved topology represents a significant engineering advancement, allowing for smoother power delivery and reduced ripple current compared to traditional single-phase designs. This results in cleaner power conversion and improved overall system performance.

Gallium Nitride High Frequency High Efficiency Power Module (Gan HFHFPM)

Beyond the PFC stage, the IA-9XG employs new-generation GaN semiconductor modules for the critical power conversion stages that supply the amplifier circuits. These modules showcase the remarkable capabilities of GaN technology, with each individual module maintaining the same compact 75 × 30 × 25 mm footprint while delivering up to 250 watts of output power and instantaneous peak current capabilities of up to 10 amperes.

The choice of GaN semiconductors over traditional silicon-based solutions enables this extraordinary power density while maintaining excellent thermal characteristics and switching efficiency. This translates to reduced heat generation and improved long-term reliability.

Symmetrical Dual Supply Architecture

The IA-9XG’s power supply design incorporates two independent GaN power blocks configured to create a symmetrical dual supply system, providing both positive and negative voltage rails. This balanced approach ensures optimal performance for the amplifier’s differential circuit topology.

Combined, these twin power blocks deliver a total output of 500 watts with peak current capability reaching 20 amperes. This substantial power reserve enables the IA-9XG to achieve an impressive 200 watts per channel of music output power, ensuring dynamic headroom for even the most demanding musical passages.

Engineering Excellence Through Miniaturization

Perhaps most remarkably, this advanced power supply system delivers performance equivalent to traditional transformer-based power supplies while occupying only one-fourth the physical space and weighing merely 20% of conventional designs. This dramatic reduction in size and weight opens new possibilities for amplifier design and placement flexibility without compromising performance.

Performance Benefits

The integration of GaN Power Factor Correction with GaN Power Modules creates a synergistic effect that delivers multiple performance advantages. The system achieves exceptional efficiency with minimal energy loss, translating to reduced operating costs and environmental impact. The high power output capability within such a compact form factor represents a paradigm shift in power supply design philosophy.

From an audio perspective, the GaN-based power supply contributes to the IA-9XG’s sonic signature through fast, detailed, and dynamic sound reproduction. The ultra-clean power delivery creates a deep black background that enhances musical detail retrieval and provides excellent channel separation, allowing listeners to experience music with exceptional clarity and precision. The NuPrime IA-9XG’s GaN power supply technology represents a convergence of advanced semiconductor engineering and audio design philosophy, delivering a solution that pushes the boundaries of what’s possible in compact, high-performance amplifier design.