SANSUI au-999 integrated amplifier PB series highest grade model overhauled

Description: Product descriptionThis integrated amplifier is the highest grade model of Sansui's PB series and is an upgraded version of the AU-777D.Aiming for more faithful sound reproduction, it was developed through extensive hearing tests.The main amplifier section employs a two-stage differential amplification circuit and a complete direct connection system of plus and minus two power supplies without an output capacitor. This makes the NFB uniform from the ultra-high range to the ultra-low range, improving various characteristics.The equalizer stage employs a 3-stage E-E NF type PNP silicon transistor with little noise, and has obtained low noise, low distortion, wide dynamic range, and high stability.A direct connection circuit is used as much as possible for the amplifier circuit, Mylar capacitors are used as much as possible for the necessary parts of the coupling capacitors, and electrolytic capacitors with large phase distortion in the high region and poor transmission characteristics are banished.The tone control section uses Sansui's original triple tone control, which allows adjustment of not only Bass and Treble but also Midrange.The tone selector allows defeat and rise/fall points to be switched to 2 frequencies, and a click step type with 2 dB low/treble and 1 dB mid-range steps for accurate adjustment is adopted.The pre-main section can be separated and used alone.Two tape decks can be used simultaneously and a TapetoTape reprint switch is installed.Also equipped with a stereo balance check circuit, level adjuster, NF type low/high filter, tuner selector, microphone input jack, muting switch, program indicator, headphone jack, DIN connector, etc.●Main specificationsModel integrated amplifierEffective output 70W/70W(4Ω)80W/80W(8Ω)Music power (IHF) 180W (4Ω)140W(8Ω)Total harmonic distortion rate 0.4%Cross modulation distortion rate 0.4%Power band width (IHF) 10Hz to 30kHzFrequency characteristics 5Hz~100kHzStereo separation 50dBHum and noise 100dBInput sensitivity/impedance 1V/40kΩLoad impedance 4Ω to 16ΩDamping factor 45(8Ω)Rated output 1VTotal harmonic distortion rate 0.1%Frequency characteristics 15Hz to 70kHzHum and noise (IHF) Phono1, 2:80dBMic:80dBTuner, Aux:85dBInput sensitivity Phono1, 2:2mVMic:3mVTuner, Aux, Tape mon(Pin/Din):200mVRecording output Tape rec(Pin):200mVTape rec(Din):30mVTone control Bass:+12dB~-8dB(20Hz)Midrange: ±5dB (1kHz, 2kHz)Treble:+12dB~-8dB(20kHz)Tone selector Bass: Defeat, 200Hz, 400HzMidrange: Defeat, 1kHz, 2kHzTreble: Defeat, 6kHz, 3kHzLow filter -20dB(20Hz)High filter -18dB(20kHz)Muting -20dBPower consumption 370WExternal dimensions Width 461.5x Height 155x Depth 316mmWeight 17.5kg★The condition of the product is that it has scratches and dirt.This amplifier for sale has been overhauled, maintained, and tuned up by us.Maintenance details1. Flat amplifier (equalizer amplifier, tone control amplifier, etc.)Replace the transistor with a new one, replace the electrolytic capacitor with a new one, and repair the soldering., maintenance of contacts, and replacement of some film capacitors with new ones.2, Main amplifier (voltage amplification circuit)Replace the electrolytic capacitor with a new one, replace the film capacitor with a new one, replace the transistor with a new one, replace the diode with a new one, replace the semi-fixed resistor with a new one,Solder correction3. Main amplifier (power amplification circuit)Replace the electrolytic capacitor with a new one, replace the transistor with a new one, and repair the soldering.4, power supply circuitReplace the capacitor with a new one, replace the transistor with a new one, replace the block capacitor with a new one, replace the rectifier diode with a new one, replace some fuses with new ones, and fix the soldering.5. Various adjustmentsBias adjustment, output voltage adjustment6. Tune up the flat amplifier, main amplifier, and power supply circuit without changing the circuit configuration.That's all.◎Although it has been overhauled, it does not guarantee future operation. Please refrain from purchasing if you are concerned about the appearance.For "remote delivery areas", additional fees will be charged. Import duties,taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility. 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: 1582 USD

Location: Yamagata-ken, Miya-waki,

End Time: 2024-12-31T06:08:55.000Z

Shipping Cost: 0 USD