SANSUIAU-9900 Integrated Amplifier (Transistor) Unique chassis structure
$ 678.48
Description
Product description An integrated amplifier that uses a unique chassis structure to improve audio characteristics and operability. Audio equipment peripheral equipment amplifier The AU-9900 adopts a partitioned layout, with the preamplifier section and tone control section placed on the front panel side, and the power section such as the heat sinker and power transistor placed on the rear side. As a result, each function and operation is independent and integrated into a single integrated amplifier, reducing mutual interference. The input terminals for players, etc. are located on the front right side panel, and the output terminals for the speakers are located on the left side panel, ensuring that the signal flow can be amplified smoothly using the shortest route. In addition, the input terminal, selector switch, and equalizer amplifier are located close to each other, reducing the need for shielded wires and preventing deterioration of high-frequency characteristics due to stray capacitance. The power amplifier section employs an all-stage directly connected pure complementary OCL system with a differential amplifier circuit in the input stage. Moreover, the parallel push-pull circuit which can obtain sufficient power with a low distortion rate is adopted as an output stage. The input circuit of the equalizer section has two amplifier configurations, a flat amplifier and an equalizer amplifier, each having a differential amplifier circuit using dual transistors. RIAA correction is a CR+NF type that performs high and low frequencies independently, obtaining more accurate RIAA characteristics and phase characteristics. In addition to the normal tone control, it is equipped with a triple tone control that allows you to control the midrange. In addition, the turnover frequency can be changed to 3 levels of low range and 3 levels of high range using the tone selector. amplifier The power supply section uses an efficient toroidal transformer with good regulation. In addition, a large capacity capacitor and a stabilized power supply circuit are combined to supply stable ± power to each block stage. The protection circuit uses temperature detection, DC detection, and ASO detection current limiter circuits to protect the speaker and power transistor. It is equipped with a tone defeat switch that passes the tone circuit and provides flat frequency characteristics. Volume level can be set to 0dB, -10dB, -20dB. Equipped with a 2-circuit tape play circuit, a tape copy switch, a tuner priority selector, a low/high filter, a muting switch, and an input impedance/sensitivity changeover switch. ●Main specifications Model integrated amplifier Effective output (both channels operating) 80W+80W (4Ω, 8Ω, 20Hz to 20kHz) 80W+80W (4Ω, 8Ω, 1kHz, THD 0.05% or less) Total harmonic distortion rate (rated output) 0.08% or less Cross-modulation distortion (70Hz:7kHz=4:1, SMPTE) 0.08% or less Frequency characteristics (at 1W) 10Hz to 50kHz +0 -1dB Damping factor 80(8Ω) RIAA deviation (30Hz~15kHz) ±0.3dB Load impedance 4Ω, 8Ω Channel separation (1kHz) Phono1, 2:55dB or more Tuner, Aux1, 2, Tape Monitor: 60dB or more Hum and noise (IHF) Phono1, 2:65dB or more Tuner, Aux1, 2, Tape Monitor: 80dB or more Input sensitivity/impedance (1kHz) Phono1: 2mV, 4mV, 8mV/30kΩ, 50kΩ, 100kΩ Phono2: 2mV/50kΩ Tuner, Aux1, 2, Tape Monitor1: 130mV/50kΩ Tape Monitor2(Pin/Din):130mV Maximum allowable input (1kHz, THD 0.1% or less) Phono1: 1000mV (input sensitivity switching 8mV) Phono2:300mV Aux, Tuner: 3V Output level Tape rec1(Pin):130mV Tape rec2(Pin/Din):130mV/30mV Tone control Bass:±10dB(30Hz) Midrange:±5dB(1.5kHz) Treble:±10dB(20kHz) Tone selector Bass: 150Hz, 300Hz, 600Hz Treble: 2kHz, 4kHz, 8kHz Low filter -3dB(20Hz), 12dB/oct -3dB(60Hz), 12dB/octave High filter -3dB(7kHz), 6dB/oct -3dB(12kHz), 12dB/octave Rated power consumption 180W External dimensions Width 460x Height 160x Depth 375mm Weight 17.9kg ★The condition of the product is that it is used and has some scratches and dirt due to daily use. Maintained by our designated company 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.
