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NuPrime PRA-9X

NuPrime PRA-9X

$1,099.00Price
The NuPrime PRA-9X is a fully balanced preamplifier designed for ultra-low distortion (THD+N of 0.0004%) that includes a MM phono input and a 6.3mm headphone output. There are a variety of settings for matching different MM cartridges.
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  • Description

    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.

     

    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

  • Specs

    Specifications:

    Inputs:

    • 1 x Phono Stage
    • 2 x Analog Stereo RCA
    • 1 x Analog Stereo XLR

    Outputs:

    • 1 x 6.3mm headphones out
    • 1 x pair of stereo RCA out
    • 1 x pair of stereo XLR out

    Phono Stage:

    • Input resistance: 32K ohm / 47K ohm / 100K ohm
    • Input capacitance: 100 pF / 220 pF / 320 pF
    • MM Input Sensitivity: 4.0 mV @ 1KHz
    • GAIN: MM input to LINE output (Vol./Max.) => 50dB @ 1KHz

    PRE Stage:

    • Input resistance: 20K ohm
    • Output resistance: 10 ohm
    • THD+N: 0.0004% @ 7.5V Vrms
    • S/N ratio >115dB @ 7.5V Vrms
    • Frequency Response: 0Hz to 50KHz (0.2dB), 200KHz (-3dB)
    • GAIN: LINE input to LINE output (Vol./Max.) => 17dB @ 1KHz

    Headphone Stage:

    • 560mW @ 32 ohm / 110mW @ 600ohm
    • THD+N: 0.004% @ 32 ohm / 480mW, 0.0015% @ 600 ohm / 100mW
    • S/N ratio >110dB @ 32 ohm / 450mW
    • Frequency Response: 0Hz to 50KHz (0.2dB), 200KHz (-3dB)
    • GAIN: LINE input to LINE output (Vol./Max.) => 17dB @ 1KHz
    • Dynamic Range > 115dB

    Dimensions and Weight:

    • Worldwide AC voltage: (90VAC~130VAC // 210VAC~250VAC) With Voltage Select Switch
    • AC Fuse: Slow-blow, T1A, 250VAC
    • Product Dimension:  55 x 235 x 281 mm (H x W x D)
    • Package Dimension: 80 x 390 x 360 mm (H x W x D)
    • Product Weight: 3kg
    • Package Weight: 4kg

    Warranty: 1 year

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