Technically Speaking, MC/MM Phono Stage

PP-3 Digital Phono Preamplifier

Details

LP to HD

NAD’s PP-3 combines the award winning PP-2 MM/MC Phono Preamp with a high quality Analogue-to- Digital converter with USB interface. Utilizing VinylStudio™ Lite PC Software (CD included) copy your LPs directly to a PC as either .wav or .mp3 files. Once your analogue LPs are digitized, the music can be burned onto CD-Rs or transferred to portable music players. The PP-3 also includes the same analog outputs as the PP-2 for connection to an analogue stereo system.

TECHNICALLY SPEAKING

The PP-3 phono preamp consists of a low noise discrete MC preamp followed by a low noise opamp-based RIAA MM stage incorporating a 12dB /octave infrasonic filter to attenuate turntable “rumble” noise. The output feeds the Line Output as well as the soft clipped input of an A/D converter with USB Output. This can be connected to any PC for recording from vinyl disc to PC hard drive.

MC/MM PHONO STAGE

The moving coil preamp is a 4 transistor low distortion amplifier noise-optimised for the very low source impedance of moving coil cartridges. It uses ultra-low intrinsic base resistance transistors and operates two of them in parallel push-pull for a further 3dB lowering of input noise. Its input noise is typically 60nV, or 78dB below 0.5mV (RIAA and A weighted). It has a gain of 15 times or 24dB bringing the lowest output MC cartridges up to MM level. The input impedance is 100 ohms in parallel with 180pF.

The Moving magnet preamp section uses a low noise low distortion opamp with RIAA equalisation and infrasonic filter in the feedback network. The gain at 1k is 35.2dB, or 287mV out for 5mV in with 23dB overload margin and the frequency response is accurate within +/- 0.3dB 50Hz-20kHz, +/- 1dB 20-50Hz. The infrasonic filter has -3dB point at 10Hz and is 14dB down at 5Hz. The input noise with IHF cartridge source is 0.75uV or 76dB S/N re 5mV (RIAA and A weighted as per IHF202.)

DIGITAL STAGE

The output of the phono preamp is attenuated, further low pass filtered and fed to the input of the A/D converter. A Soft Clipping circuit is employed to prevent overdriving the A/D converter. The MM preamp has a 100dB dynamic range and the A/D converter 89dB allowing NAD to optimise the gain for best signal to noise and lowest distortion. The A/D converter has a sampling frequency of 48kHz for USB compatibility and a THD of only 0.01% at 100% FS.

POWER SUPPLY

By increasing the power supply voltage from 15 volts to 24 volts, we have improved overload margins and enhanced musical dynamics. This supply delivers raw DC to the PP-3. Internal circuitry has a precision low

PP-3 specifications

NAD PP-3, a compact and versatile audio product from NAD Electronics, stands out in the realm of high-fidelity sound solutions. Designed primarily for music enthusiasts and audiophiles, the NAD PP-3 is a phono preamplifier that allows users to connect vinyl turntables to modern audio systems, ensuring that the warmth and depth of analog sound are preserved.

One of the main features of the NAD PP-3 is its dual-input capability. It supports both moving magnet (MM) and moving coil (MC) cartridges, catering to a wide range of turntable setups. This flexibility ensures that users can utilize their existing equipment without the need for separate preamps for different cartridge types. Additionally, the PP-3 incorporates adjustable gain settings, allowing audiophiles to optimize the sound output based on their specific requirements and listening preferences.

The technology embedded within the NAD PP-3 reflects the brand's longstanding commitment to audio excellence. With a fully discrete transistor design, the preamplifier minimizes noise, providing a clean and clear audio signal. The high-quality components used in its construction enhance signal integrity, contributing to the unit’s performance. Furthermore, the PP-3 features a sophisticated RIAA equalization that accurately remasters records to ensure faithful reproduction of the original audio.

Another remarkable characteristic of the NAD PP-3 is its connectivity features. The unit is equipped with both RCA outputs and a USB output, enabling connection to traditional audio systems as well as digital devices. The USB output is particularly appealing to users who wish to digitize their vinyl collection. This functionality opens a new world of possibilities, allowing fans of vinyl to preserve their favorite records in digital formats while maintaining sound fidelity.

Beyond its technical specifications, the NAD PP-3 embodies the brand's dedication to user-friendly design. Its compact size ensures seamless integration into any home setup, while its straightforward interface allows for easy operation. The NAD PP-3 has quickly become a favorite among those looking to enhance their audio experience effortlessly.

Overall, the NAD PP-3 is a stellar option for anyone looking to bridge the gap between analog and digital audio, combining advanced technologies with practical features to deliver a top-notch listening experience. With its flexibility, superior sound quality, and user-friendly design, it is a vital component in any audiophile's collection.