SANSUI INTEGRATED AMPLIFIER AU-α907DR Adopts NM-LAPT Junk item

$1079.0 Buy It Now or Best Offer
free,30-Day Returns

Seller Store zorokuharico
(127) 100.0%,

Location: Miya-waki,Japan
Ships to: US,
Item: 405387713490

Return shipping will be paid by:Seller
All returns accepted:Returns Accepted
Item must be returned within:30 Days
Refund will be given as:Money Back
Return policy details:
MPN:Does not apply
Sansui:Sansui
Country/Region of Manufacture:Japan
Type:Integrated Amplifier
Audio Inputs:Two-Channel RCA, XLR
Number of Channels:2
Color:Black
Number of Inputs:7
AU-alpha 907DR:AU-alpha 907DR
Year Manufactured:1990-1999
Number of Outputs:3

Product descriptionAn integrated amplifier completed by carefully polishing and combining three factors: circuit, mechanism, and parts.The power stage uses NM-LAPT (Non Magnetic Liner Amplification Power Transistor), which was developed as a power transistor exclusively for audio.NM-LAPT is made of pure copper material, down to the bonding wire, and the cutoff frequency (fT) and breakdown resistance (PC) are factory-engineered to achieve excellent high frequency characteristics and a large current limit value.Since the ground circuit of the power supply circuit and the ground circuit (negative output) of the amplifier circuit are connected, the reverse current from the speaker side flows into the amplifier circuit and prevents deterioration of sound quality. α-X balance circuit is introduced.By adopting a balanced configuration in which the amplifier circuit is completely independent from the ground circuit and transmission and amplification are performed simultaneously, the circuit itself blocks external noise and common mode distortion.In addition, dynamic frequency characteristics are improved by lowering the circuit impedance and suppressing the influence on passing signals as much as possible.Furthermore, by using a 4-amp configuration in which the + side and the – side each have a dedicated amplifier, the push-pull system drives the + and – sides from both directions under the same conditions, resulting in a powerful sound with low distortion.Introducing a reinforced twin monaural construction in which the power unit is placed in the center and the power units are placed symmetrically, each component with improved strength prevents deterioration of sound quality due to vibration and achieves excellent sound image localization and phase characteristics. Masu.In addition to controlling vibration with twin monaural construction, we also use a large amount of materials with high internal loss and high vibration absorption effects, such as large pure copper insulators covered with felt, pure copper bases, and copper-plated parts. I am.Equipped with a source power direct switch that transmits all line input signals to the power amplifier with one touch.Connect and amplify directly without passing through any accessory functions to reproduce the pure sound of the source.Equipped with a recording function that allows effective recording and listening when a CD player is connected to the power amplifier direct.For example, while listening to the source input to Normal 1, it is possible to back-record a CD or other source connected to Normal 2.●Main specificationsModel integrated amplifierRated output (20Hz to 20kHz,Both channels operate simultaneously, THD0.003%) 6Ω:190W+190W8Ω:160W+160WTotal harmonic distortion rate 0.003% or less (at rated output, 20Hz to 20kHz, 8Ω load)Frequency characteristics DC ~ 300kHz, +0 -3dB (at 1W output)Cross modulation distortion rate 0.003% or less (at 8Ω load)Damping factor 150(8Ω)Input sensitivity/impedance 1V/5kΩ(1kHz)SN ratio 120dB or more (A network)Dynamic power 6Ω:310W4Ω:390W2Ω:580WTIM distortion (SAWTOOTH) below measurement limit valueSlew rate 200V/μsecRise time 0.5μsecInput sensitivity/impedance(1kHz) Phono MM:2.5mV/47kΩPhono MC:300μV/100ΩCD, Tuner, Line, Tape/DAT1・2・3: 150mV/20kΩPhono maximum allowable input MM(THD 0.01%):250mVMC(THD 0.1%):25mVFrequency characteristics (1W) Phono MM: 20Hz to 20kHz, ±0.2dBCD, Tuner, Line, Tape/DAT-1/2/3: DC ~ 300Hz, +0 -3dBSN ratio (A network) Phono MM:90dB or morePhono MC:75dB or moreCD, Tuner, Line, Tape/DAT-1/2/3: 110dB or moreTone control BASS maximum variation: ±5dB (50Hz)TREBLE maximum change: ±5dB (15kHz)Subsonic filter 16Hz(-3dB), 6dB/octLoudness 50Hz:+4dB10kHz:+3dBRated power consumption 400WExternal dimensions Width 460x Height 159x Depth 446mmWeight 33.0kg★The condition of the product is slightly scratched and dirty.The power is on, but the protector indicator isIt is a junk item because it blinks and cannot be checked for operation. Instructions not includedThere is some paint peeling under and behind the decorative board on the right side. I think it’s in good condition because it’s been in my audio rack for over 30 years.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.

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