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Pioneer Exclusive C3a Vintage Control Preamplifie from Japan For Sale

Pioneer Exclusive C3a Vintage Control Preamplifie from Japan
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Pioneer Exclusive C3a Vintage Control Preamplifie from Japan:
$1400.00

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  • Be Careful!!

    This is AC100V model. Please prepare step down transformer if you use the amplifier!!

    Condition

    ・Works good.・There are little noise when you control Tone/Base 50Hz/Low Filter/High Filter.・Many scratches on wooden cover.・Some scratches on the face.

    Description

    Circuit systemEqualizer amplifier: Differential three-step hardwired-connection Class-A SEPP circuit per step
    Flat amplifier: Differential three-step hardwired-connection circuitry per stepInput mV - 10mV of Phono / 25kohm, 50kohm, Aux1, 2, Tape PB1, 2 or 3:150mV / 100kohm
    Aux3:150mV - infinity/100kohmPhono maximum permissible input
    (0.01% of a THD, 1kHz)Phono1, 3:700mV
    Phono2:1.4VAn Output voltage/impedanceTape rec1, 2 or 3:150mV / 2.5kohm
    OutputA, B (RL:50kohm) :2V/600 ohm (rate)
    15V/600 ohm (maxima)Headphones (RL: 8ohms) :170mV/40 ohm (Output 100mV o\'clock)
    500mV/40 ohm (maxima)THD (20Hz - 20kHz)0.01% or less (at the time of 2V output)
    0.01% or less (at the time of 15V output)Frequency characteristicPhono: 20Hz-20kHz±0.2dB
    Tuner, Aux, and Tape PB:20Hz-20kHz+0 -0.5 dB
    10Hz-90kHz+0 -1 dBTone controlBass main: ±7.5dB (100Hz), a 1.5dB step
    Factice: ±6dB (50Hz), a 1.5dB step
    Treble main: ±7.5dB (10kHz), a 1.5dB step
    Factice: ±6dB (20kHz), a 1.5dB stepFilterLow cut: 15Hz (12 dB/oct), 30Hz (18 dB/oct)
    High cut: 12kHz (12 dB/oct), 8kHz (18 dB/oct)S/N (IHF, A network)
    Short circuitPhono:80dB
    Tuner, Aux, Tape PB: 90dB or moreAttenuator- 15dB-30dBThe semiconductor usedTransistor: 65 pieces
    Diode: 48 piecesSupply voltageAC100V, 50Hz/60HzPower dissipation
    (maximum electric power consumption)25W (Electrical Appliance and Material Control Law)Power receptaclePower-switch interlock: Three lines
    Power-switch un-interlocking.: Three linesDimensionsWidth 468x height 206x depth of 342mmWeight12.5kgAdjunctA relay code with a pin plug
    about Exclusive C3aThe stereo preamplifier which pursued a beautiful sound and was completed with an advanced technology and the component partses selected carefully.
    The equalizer circuitry has secured the high allowable input by the high-voltage design of 140V.
    The attenuator type 4-unit volume of 22 contacts is adopted as a volume.It has controlled with the top of flat amplifier at two places of the last stage of amplifier, and the remains noise is reduced.
    The thing of special edition is altogether adopted as a part or product-line material, and contest a Mylar, the polystyrene capacitor, contest electrolysis, and contest VII are adopted as a capacitor.
    In order to suppress a distorted occurrence as much as possible, the oxygen-free-high-conductivity-copper line is adopted as product-line material.
    The 140micro thickness Copper-foil glass epoxy group board is adopted as a substrate.Although the conventional glass epoxy group board was sticking and using a 35micro Copper foil, in order to aim at DCR (direct current resistance) in a substrate, and a falloff of an inductance, the 140micro Copper foil which increases 4 times over the past is adopted.
    In order to secure the stable performance and robustness, all of an input/output terminal and the termination of each assembly are raising the conduction characteristic sharply, such as using gilding.In order to stabilize a plating and to stick conventionally, nickel plating had been performed to the ground. However, since ferromagnetic material, nickel had the distorted occurrence resulting from a hysteresis.It plated with the newly developed pin jack adopted as C3a on the ground of non-magnetic material which shows nickel, equivalent, or the stability beyond it, and the distorted occurrence was prevented and the stable contact performance has been obtained.
    The hi-reliability and the mass (15A) power cord which performed the double insulation are adopted as a power cord.Furthermore, the polar unification is aimed at by classifying the cable of a power cord by color by white and black, and managing the interconnection with AC plug.
    A connecting cord is suppressing the distorted occurrence in a connecting cord, such as using for a pin plug the gilding plug which consists of a non-magnetic-material ground, as much as possible while using an oxygen-free-high-conductivity-copper line for a material. Moreover, the structure of the connecting cord is aiming at the reduction of the inductance by adopting a different star-quad scheme from the conventional coaxial structure which made the cable with which a signal line counters mutually gather. Furthermore, the perfect shielding according a signal line to an electrically conducting polymer material and a braid is performed.There is little distorted occurrence by these and quality signal transmission is possible at a low loss.

    International Buyers - Please Note

    • Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyers responsibility.
    • Please check with your country customs office to determine what these additional costs will be prior to offerding/buying.
    • These charges are normally collected by the delivering freight (shipping) company or when you pick the item up - do not confuse them for additional shipping charges.
    • We do not mark merchandise values below value or mark items as gifts - US and International government regulations prohibit such behavior.

    • PRICE $1,600
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