For sale a Sansui top model AU D907 Limited amplifier in very good condition. Amplifier has been tested and in good working order, DC offset and BIAS have been adjusted to factory specs.

DESCRIPTION:


The custom-made model which threw in many know-hows which removed all restraints, and pursued thoroughly from sound and technical double-sideds based on AU-D907, and also were cultivated by the development of AU-X1, and new materials.

The 20 same stone stream compositions as AU-X1 are adopted as an equalizer circuitry.
The cascode bootstrap circuitry and interval which bring a diamond differential circuit close to an ideal operation much more have realized the expansion of a dynamic range.
Moreover, MC head amplifier adopts an all FET input and a full push pull input/output circuitry, and Pch/Nch FET is used for an element.

The linear high-speed element LAPT of a non-iron structure (Linear Amp.Power Tr.) is adopted by 2 parallel connection, and the real value of a diamond differential circuit is raised more.
This realizes high response speed of inside slew-rate�}300v/microsec, and the occurrence of TIM distortion is suppressed to near the zero.

The power-source part is strengthened on the theme of the high-speed response, it changed into the power-source scheme in the conventional voltage stabilizer, and the complimentary push pull (shunt) regulated circuitry is newly adopted. This circuitry guarantees the voltage supplying stabilized not only at the time of voltage descent but at the time of a power surge, and enables the power feeding stabilized more.
Moreover, in quest of the high-grade play, the case of the pure oval capacitor and the coupling capacitor was changed into the case made of a resin from aluminum, and also first recovery diode is adopted as all the diodes for a rectification.
And in order to heighten the effect of a pure oval capacitor further, the 1.2mm thickness brass board advantageous to the chassis of a power-source part in respect of a tone quality is adopted.
Moreover, the large-sized Toroidal transformer and the large-sized EI transformer were adopted as the power transformer, and the power cord with the current capacity of 15A for 200W amplifier classes is adopted as a power cord.

A pure copper is plated on a rear panel and a chassis, and also the brass board is used for the power-source part chassis, and a mounting screw also performs a bronze treatment and is aiming at the fall of the grounding RF impedance.
Moreover, the ebony wood case of the Eve Knee finish is adopted from making flavor on exclusion and the design of the stray current.

DC amplifier stream composition using the full push pull drive circuitry of the all FET input is adopted.
Moreover, 10 stone stream-compositions DC amplifier is adopted also as a flat / tone amplifier.

The direct SP output-terminal is carried and A system is direct connected with DC power amplifier stage by the shortest distance not passing through a changeover switch.

The tone jump switchpoint is carried and it can link with a power part directly from an equalizer.

The DC-AC main-amplifier input is carried and an independent using of a pre part and a power part is possible.

The large-sized and positive screw lump type is adopted as a speaker termination.


SPECIFICATIONS:

Effective output - 100W 100W (8 ohms, 10Hz - 20kHz, THD 0.008%) / 100W 100W (8 ohms, 1kHz, THD 0.003%)
THD - 0.008% or less (at 10Hz - 20kHz, the time of an effective output 8ohms)
Cross modulation distortion (60Hz:7kHz=4:1) - 0.008% or less
Output bandwidth - 3Hz - 70kHz (IHF, both ch(es) operation, THD0.02%, 8ohms)
Dumping factor - 100 (IHF, both ch(es) operation, 1kHz, 8ohms)
Input sensitivity/impedance (1kHz) - 1V/47kohm
SN ratio - 125dB or more (IHF, A network, a short circuit)
Channel separation - 95dB or more (IHF, 1kHz)
Rise time - 0.5microsec
Slew rate (8ohms) - 200v/microsec
Inside slew rate (8ohms) - 300v/microsec
Load impedance - 4 -16ohm
Dimensions 466 x 182 x 432mm
Weight 20.0kg


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Vlad
416-831-1357
When you call please mention you found this ad listing on OKz.ca