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NAD PP 4 Digital Phono USB Preamplifier


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  • Product Description

    With the addition of the PP 4 to your home system, the LPs you cherish the most come alive in the form of expansive and rich sound. Offering superb and measured sonic performance, NAD combines two simple solutions – the PP 4 Digital Phono and the USB Preamplifier – into one small device, making it easy to add phono to stereo amplifiers and AV receivers without a phono input.

    As part of NAD’s commitment to the environment, the PP 4 features a more efficient “green” power supply that reduces power consumption and automatically powers off when not in use.

    The PP 4 goes one step further with a USB interface, shielded USB cable and recording level control which reduces noise and improves the analogue-to-digital conversion process.


    • Compatible with moving magnet and moving coil phono cartridges
    • Includes VinylStudio Lite Software for ripping LPs and burning audio CDs
    • USB port for connecting to a PC
    • Line input to allow for the transfer of cassette tapes
    • Specs
    • Gain @ 1kHz: 35dB (MM), 60dB (MC)
    • Rated distortion (THD 20Hz - 20kHz):<0.008%
    • RIAA response accuracy: +/- 0.3dB
    • Signal-to-noise ratio(A weighted, with cartridge connected): 76dB (MM), 78dB (MC)
    • Input Impedance (R and C): 47kΩ + 200pF (MM) 100Ω + 180pF (MC)
    • Input sensitivity (ref. 200mV ouput): 5mV (MM) 0.38mV (MC)
    • Output Impedance: 100Ω
    • Maximum Output Level: 5.3V
    • Warranty: 2 years
    • What’s In The Box: Digital phono preamplifier, AC adapter (w/ attached 6' DC cord), 59" USB cable (USB type-A connector on one end and USB type-B connector on the other), VinylStudio Lite CD ROM, Warranty information
    • Dimensions (W x H x D): 5.31 x 1.93 x 2.83”
    • UPC: 5703120210162
    • MPN: PP4
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  • Other Details


    Input Impedance (R and C) 100Ω + 180pF
    Gain at 1kHz 58dB
    Input sensitivity (ref. 200mV ouput) 0.38mV
    Signal to noise (A weighted, with cartridge connected) 78dB
    Input overload (20Hz/1kHz/20kHz) 0.65/6.5/60mV
    Rated Distortion (THD 20Hz – 20kHz) <0.03%
    RIAA response accuracy ±0.3dB
    Infrasonic filter 5Hz -14dB
    10Hz -3dB
    Digital output (USB) 16 bit linear PCM
    Sampling frequency 48kHz
    Dynamic range 86dB


    Input Impedance (R and C) 47kΩ + 200pF
    Gain at 1kHz 35dB
    Input sensitivity (ref. 200mV output) 2.5mV
    Signal to noise (A weighted, with cartridge connected) 80dB
    Input overload (20Hz/1kHz/20kHz) 10/102/950mV
    Rated Distortion (THD 20Hz – 20kHz) <0.03%
    RIAA response accuracy ±0.3dB

    Line In

    Input Impedance 47k + 180pF
    Rated Distortion (THD 20Hz – 20kHz) <0.008%
    Signal to noise, A weighted -115dB
    Maximum Input Level 5.3V

    Line Out

    Output Impedance 100Ω
    Maximum Output Level 5.3V

    General Specifications

    Dimensions (WxHxD) 5.31" x 1.93" x 2.83"