NuForce P-20 Preamplifier

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Stock code: NUFP20PRE


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    Our Price: £4,429.00
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    Product Information

    THD+N = 0.0006% @ 1kHz and a power bandwidth of 5MHz. Near perfect reproduction of 125kHz square wave.

    The P-20 Preamplifiers elegantly sculpted aluminum case encloses a number of significant advances over the preamps award-winning P-9 predecessor in several key areas, especially with respect to volume control. A preamps volume-control capabilities are among its most critical features. In practical terms, we saw room for improvement over the already excellent P-9s volume control within the areas of transparency and noise.

    Design & Features
    The P-20s numerically controlled, switched-resistor ladder network features the last word in thin-film technology. In order to improve precision and lower the noise floor to the vanishing point, weve implemented a single thin-film, ultra-low-noise resistor in the signal path for each of the volume controls 0.5dB gain settings, thus permitting the listener to achieve the desired volume level in precise 0.5dB steps. As a further benefit, the listener is able to adjust any inputs level to exactly correspond with any other, thereby simplifying the matching of source-component volume levels.

    The heart of the P-20 boasts an all-discrete, fastidiously precise amplifier module. Because speed is of paramount significance, weve reduced capacitive loading on the final voltage amp with the implementation of ultra-low-noise, monolithic dual JFETs, specially selected VMOS FETs, and extremely flat hFE bipolar transistors in a dual cascode configuration, all of which are combined within a driven-shield arrangement. The P-20 offers a 5MHz power bandwidth, an S/N ratio exceeding 100dB, and a dynamic range in excess of 120 dB. There are no capacitors or DC-servos in the inherently stable P-20s gain circuit.

    And, in keeping with these advances, weve paid a great deal of attention to isolation. Weve covered the amplifier modules with thermal insulation along with heavy copper shields in order to avoid thermal drift or signal-degrading heating effects. Each amp modules self-contained shunt regulator further assists in isolation from power supplies. A similarly isolated floating-current source supply feeds each module to insure separation from ground-system noise.

    Since all control functions are powered by discrete power supplies, the P-20s design prevents any logic circuitry clock-signal noise from ever contaminating the analog section's low-level signals. In keeping with the P-20s state-of-the-art features, we include a delightfully convenient, custom-designed remote control. In sum, the P-20s near-to-molecular clarity offers the last word in utterly transparent, organic sound in effect, a stress-free listening experience as close to live as audio permits. Better still, these features can be activated by a 12V trigger signal enabling system integration without the need for manual intervention. All that's required is a processor or receiver with a common 12V trigger connection.

    • Ultra low noise 1nV/ Hz JFETs Volume control features numerically controlled
    • switched-resistor ladder network with the latest in thin-film
    • ultra-low-noise resistor technology
    • Full microprocessor control with memory retention
    • No capacitor and no DC-servo in the signal path 3 separate power supplies
    • Individual audio channels are shielded with heavy copper shield with thermal barrier
    • Solid stainless steel back connector panel forms a solid signal ground reference

    Specifications

    Inputs1 XLR, 5 RCA
    Outputs1 RCA, 1 XLR
    THD+Nat 1kHz = 0.0006% at 20-20kHz = 0.003% at DC to 1MHz
    S/N Ratio100dB at 20-20kHz S/N > 90dB at DC to 1MHz
    Frequency Responseat 20-20kHz = +0.02dB/-0dB at DC to 1Mhz = +0.5dB/-0dB at DC-2.5 MHz +0/-3dB
    Maximum Output7V RMS
    Phase Shift= 0
    Input Impedance= 10K ohm
    Output Impedance= 100 ohm
    Weight17lbs
    Power120V 60Hz (100V and 240V models available)
    Available Colorsblack or silver anodized aluminum
    Warrantythree (3) year warranty.

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    Occasionally, due to stock demand, we can sell out. If this occurs when you make a purchase, we will inform you quickly. Most out of stock items are available for dispatch within 3 working days. If your purchase is urgent, use this form for a priority price and stock availability check.

    All pre-owned items are in stock and available for next day delivery if order placed before 1pm.

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