Power Supply: By increasing the power supply voltage from 15 volts to 24 volts, NAD have improved overload margins and enhanced musical dynamics. By increasing the power supply voltage from 15 volts to 24 volts, NAD have improved overload margins and enhanced musical dynamics. Costly metal film resistors and film type capacitors are used exclusively in the signal path to give both measured improvement and a more refined and engaging listening experience. Other refinements include a grounding terminal post, and gold plated input and output sockets.Įxcellent Performance: The performance of the original PP-1 was already to a very high standard in the areas of noise, distortion, and RIAA equalisation accuracy, but NAD have managed to improve these specifications still further by careful circuit layout and improved close tolerance parts. The most obvious visible difference is the inclusion of a high gain Moving Coil Cartridge input allowing proper matching to virtually any high quality turntable/cartridge combination. Moving Coil Cartridge Input: The NAD PP-2e is a vastly improved successors to the very popular PP-1, arguably the most successful device of its kind. The input noise with IHF cartridge source is 0.75uV or 76dB S/N re 5mV (RIAA and A weighted as per IHF202.) The infrasonic filter has -3dB point at 10Hz and is 14dB down at 5Hz. 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 Moving Magnet preamp section uses a low noise low distortion opamp with RIAA equalisation and infrasonic filter in the feedback network. The input impedance is 100 ohms in parallel with 180pF. It has a gain of 15 times or 24dB bringing the lowest output MC cartridges up to MM level. Its input noise is typically 60mV, or 78dB below 0.5mV (RIAA and A weighted). 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. The PP4 also includes analogue outputs for connection to an analogue stereo system.ĭesign: The Moving Coil section of the preamp is a 4 transistor low distortion amplifier noise-optimised for the very low source impedance of moving coil cartridges. Once your analogue LPs are digitised, the music can be burned onto CD-Rs or transferred to portable music players. Utilising VinylStudio™ Lite Mac & PC Software (CD included) copy your LPs directly to a PC as either. The USB port lets you connect your turntable to a PC so you can transfer your record collection to your computer's hard drive and the new record level control gives greater control over digital output volume so you don't overload your computer's input. USB Port/Interface: The NAD PP4 is actually a combination of the award winning PP-2i MM/MC Phono Preamp with a high quality Analogue-to-Digital converter with USB interface. But, as the famous advert says."yes, there is more!". The output feeds the Line Output as well as the soft clipped input of an A/D converter now with a record level control. The NAD PP-4 phono preamp consists of a low noise discrete MC preamp followed by a low noise opamp-based RIAA MM stage incorporating a 12 dB /octave infrasonic filter to attenuate turntable “rumble” noise. NAD impressed the world back in the late 1970′s with their phono pre-amplifier circuits and that heritage lives on today in the PP-4. Simply add a NAD PP-4 phono pre-amplifier to your system and you can connect your turntable to any of your Receiver or Amplifier’s line-level or auxiliary (AUX) inputs. The PP-4 offers superb performance in a clean and simple package for a very reasonable cost. What you need is a phono pre-amplifier like the NAD PP-4. Missing the music in your record collection? Longing to listen to your LPs? Yes, vinyl is back big time! But most recent Home Theatre Receivers and a lot of budget Integrated Stereo Amplifiers either have no dedicated input or a very low cost, low performance circuit. However, there’s no need to miss out on the musical treasures in your vinyl collection just because your Receiver or Amplifier doesn’t have a dedicated input for a turntable – commonly called a phono input. The NAD PP4 has replaced the very popular PP3i and for the first time includes an analogue-to-digital convertor with a record level control. The PP4's Auto Power Down feature is new and saves energy by automatically powering the PP4 to OFF when not in use.
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