Description
Plese Check Photo and Discription.Please feel free to message me if you have any concerns. Manufacturer / Model No. SANSUI AU-?607 MOS PREMIUM(15th anniversary limited production) Accessories Input short pin x2 Condition Maintenance operation confirmed. Output interruption/noise repair (output relay disassembly contact improvement/INPUT-SELECTOR contact improvement) DC balance adjustment (HOT-GND/HOT-COLD), BIAS check, LR output VR transition check Repair broken electrolytic capacitor fixing bracket (tighten and fix stainless steel flexible band) Repair broken shaft of SOURS-DIRECT SW (Stud bolt processing/evoxy adhesion) Repaired scratches on the wood side panel and painted it clear (slightly darker finish than the original) There is a slight eccentricity in the TAPE-PLAY SW. There are some scratches on the front and top panels. It has been serviced and maintained in our store. All parts are in good working order. About the item SANSUI AU-?607 MOS Premium ¥138,000 (introduced in 1991) This integrated amplifier was made to commemorate the 15th anniversary of the 607 series. The power stage uses a pair of 2SK405/2SJ115 MOS FETs for high-speed amplification, The advanced ?-X balanced circuitry allows the devices to demonstrate their full potential, resulting in a high degree of stability and delicate expressiveness. The advanced ?-X balanced circuit is structured with dedicated amplifiers on the + and - sides of the output, This push-pull system drives the speakers with a total of four amplifiers from both directions, The circuit itself cancels external noise and common-mode distortion. In addition, the new diamond differential circuit, which is capable of supplying instantaneous high current, is combined with the The power supply unit is equipped with a newly developed power supply unit. The power supply section uses a newly developed power transformer and electrolytic capacitors, Furthermore, the power supply section is completely independent and separated from the ground in a closed-loop configuration, The power supply section is completely independent from the grounding, and is of a closed-loop configuration to prevent unbalance of the power supply from adversely affecting the music signal. The chassis structure adopts a reinforced twin monaural construction. In this construction, the power supply unit consisting of the power transformer and electrolytic capacitors is placed in the center, and the power units are symmetrically positioned on both sides. This provides an ideal weight balance and effectively prevents sound quality degradation caused by the amplifiers inherent vibrations generated by the power and signal systems. This effectively prevents sound quality degradation caused by the amplifiers inherent vibrations from the power and signal systems. The transmission paths of vibration and sources of magnetic distortion are analyzed and effectively controlled, Isolated mechanical feedback is used to analyze and effectively control the transmission paths and sources of magnetic distortion. This method uses a large number of isolation parts made of pure copper, which has high internal loss and excellent vibration absorption capability, Isolation parts are used between the transformer and chassis, MOS FET mounting points, master volume fixing points, and so on, Vibration, resonance, and magnetic distortion are thoroughly eliminated in every part of the power and signal systems, including between the transformer and chassis, the MOS FET mounting points, and the master volume fixing points. The parts are carefully selected for their quality, including the power transformer and electrolytic capacitors of special specifications, The parts are non-magnetic, anti-vibration, low-impedance, and high-speed. The power amp direct function allows direct input of high-output digital music signals to the power amp section. In addition to the normal input terminal, a balanced input terminal is also provided for high-purity transmission and amplification. The source power direct function allows all line input signals to be transmitted to the power amplifier with a single touch without passing through any accessory functions. The source power direct function allows all line input signals to be transmitted to the power amplifier with a single touch, without passing through any accessory functions. The rec selector function allows you to connect a CD player to the power amp direct, Background recording of other sources is possible while listening. For example, while listening to a source input on Normal 1, Normal 2 can be used to record another source, such as a CD, while listening to the input source on Normal 1. Phono equalizers are provided for MC and MM cartridges. Model: Integrated amplifier Effective output (10Hz to 20kHz, both channels operating simultaneously): 55W+55W (6?), 45W+45W (8?) Total harmonic distortion (at RMS output): 0.008% or less (8 ohms) Modulation distortion: 0.008% or less (8 ohms) Damping factor: 150 (8 ohm) Frequency response (1W): DC to 300kHz +0dB, -3dB Input sensitivity/impedance: 1V/5k?(1kHz) SN ratio (A-network): 120dB min. Dynamic power: 70W (6?), 85W (4?), 90W (2?) TIM distortion (SAWTOOTH): Below measurement limit Slew rate: 180V/?sec Rise time: 0.6?sec Input sensitivity/impedance (1kHz): Phono MM: 2.5mV/47k?, Phono MC: 300µV/100?, CD, Tuner, Line, Tape/DAT-1, 2, 3: 150mV/20k? Phono maximum allowable input: MM(THD 0.01%):210mV, MC(THD 0.1%):21mV Frequency response (1W): Phono MM: 20Hz to 20kHz ±0.2dB, CD, Tuner, Line, Tape/DAT-1, 2, 3: DC to 200kHz +0dB, -3dB SN ratio (A-network): Phono MM: 88dB or better, Phono MC: 70dB or better, CD, Tuner, Line, Tape/DAT-1, 2, 3: 110dB or better Tone control: Bass max. change: ±6dB(50Hz), Treble max. change: ±6dB(15kHz) Subsonic filter: 16Hz(-3dB), 6dB/oct Loudness: +4dB(50Hz), +4dB(10kHz) Rated power consumption: 160W Dimensions: W 460 x H 159 x D 446mm Weight: 18.8kg SHIPPING?FedEx DHL or Japan Phost?From JapanPackages usually leave our warehouse within 10 days of payment.Weekend orders will ship on Monday or Tuesday.We provide valid Tracking Numbers for all orders. We will ship via FedEx. We can also ship by Japan Post. Please contact me prior to purchase if you wish to ship by Japan Post. PEYMENTS?PayPal?Debit?Cards?Credit?CardsWe ship within 48hours of payment.We Ship Within10 Days of Payment. RETURN INFORMATION?Exchabge possible within 30 days.?If you Have any Problems, Please Contact us in Advance Customoms Duty?Import duties, taxes, and charges are not included in the item price or shipping cost.?These charges are the buyers responsibility.? Please check with your countrys customs office to determine what these additional costs will be prior to bidding or buying.
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