Sansui C-2301 Stereo Pre Amplifier Vintage Japan

$2500.0 Buy It Now or Best Offer
free,30-Day Returns

Seller Store kozakura-street
(60) 100.0%,

Location: chiba
Ships to: US,
Item: 296681515595

Return shipping will be paid by:Buyer
All returns accepted:Returns Accepted
Item must be returned within:30 Days
Refund will be given as:Money Back
Year production:1977-1979
Color:Black
Warranty del manufacturer:Without warranty
UPC:Does not apply
Audio Outputs:Stereo L/R RCA
Number of Outputs:2
Amplifier Class:A
Sansui:Sansui
Amount of units:1
Type:Does not apply
Audio Inputs:Stereo RCA
Number of Channels:2
Manufacturer Warranty:Without Warranty
C 2301:C 2301
Style:Amplifier hi-fi
Country/Region of Manufacture:Japan
Unit Quantity:1

Sansui C-2301 Stereo Pre Amplifier VintageDescription Condition: USED Operation : OKThis is a VINTAGE Sansui C-2301 amplifier. All inputs and outputs have been checked, and the volume, tone, and balance has adjusted. A copy of the service manual (in English) is included. Please note that there are cracks in front pannel. But it does not affect for use. Please check the photos about the exterior of equipment before you buy it. There are some age-related abrasions, scratches and stains, so please understand that. Please note that this model was made for Japanese market, so the power supply is AC100V.Type High-grade stereo control amplifier Input sensitivity/input impedance Phono1, 2 MM: 2mV/47kΩ High MC: 2mV/100Ω MC: 70μV/3Ω, 200μV/30Ω Tuner, CD, Line1, 2, Tape Play1, 2, 3: 150mV/47kΩ Maximum allowable input (1kHz, THD 0.01%) Phono1, 2 MM: 350mV Phono1, 2 High MC: 40mV Output voltage/output impedance Tape Rec(PIN): 150mV/50Ω Control amplifier output Normal: 1.2V/50Ω Balance: +4dBm Frequency response Phono1, 2 MM: 10Hz to 300kHz ±0.2dB Tuner, CD, Line1, 2, Tape Play1, 2, 3: DC to 500kHz +0 -3dB Signal-to-noise ratio (A network, short circuit) Phono1, 2 MM: 90dB Phono1, 2 MC: 80dB Tuner, CD, Line1, 2, Tape Play1, 2, 3: 110dB External dimensions Width 474 x Height 160 x Depth 422mm Weight 20.9kgThis control amplifier was developed by fully utilizing accumulated advanced technology and know-how in response to the question of how far it is possible to purify a control amplifier. The three elements of construction, quality parts, and circuit configuration have been thoroughly pursued without compromise, and polished through repeated listening and improvement. We have prevented interference between circuits, eliminated the effects of magnetic and electrostatic flux on the sound, and pursued thorough vibration resistance. First, we focused on the chassis structure and used a 1.2mm thick pure copper plate for the main chassis. The L and R circuits are placed above and below this pure copper chassis, preventing mutual interference between the left and right channels. In addition, pure copper plates are also used for the bottom plate and input/output terminal panel, thoroughly reducing the DC and AC impedance of the chassis body and making each amplifier block a unit structure with electrostatic shielding using extruded aluminum material, eliminating the effects of flux jumping and vibration. In addition, the suspension of the amplifier board suppresses the vibration of the board itself, and at the same time, a new surface contact pressure bonding method is adopted to prevent the influence of external vibrations such as sound pressure from the speaker. Only carefully selected parts are used, from resistors, capacitors, and semiconductors to the core material of the transformer, pin jacks, and power cords. The resistors are newly developed RMA resistors with a molded structure that enhances vibration resistance, and the joints are gold-plated brass. The capacitors are the highest grade products that have achieved newly developed low distortion, high speed, and no resonance, including Great Pure Focus electrolytic capacitors, N lambda capacitors, copper foil Mylar capacitors, and polystyrene capacitors. The power transformers are equipped with two new core structures with extremely small leakage flux, exclusively for L/R. The master volume is an ultra-high-grade detent type that improves sound quality, durability, and precision, and the resistors are gold-plated metal coating evaporated onto a glass epoxy board, and the sliders are 200 multi-alloy brushes. The pin jacks are machined from solid brass and gold-plated over copper. They are firmly screwed to the input/output terminal panel to prevent signal loss at the contact points. The balanced output terminals are high-quality professional products manufactured by Neustrick of Switzerland. The circuit configuration is a push-pull configuration with pure Class A cascode for the equalizer amplifier, line amplifier, and balanced amplifier to achieve a high S/N ratio and wide dynamic range. In particular, the circuit design places great importance on the line amplifier, taking into account the current situation in which many input sources are directly input to the line amplifier. In order to protect the purity of the sound, the number of contacts is unnecessarily increased, and harmful relays that are themselves a source of magnetic distortion are eliminated, and the signal circuit changeover switch uses a gold-plated magnetic material. In addition, the power supply circuit is configured so that everything is independent, from the transformer to the rectifier circuit and regulator. The MC transformer is configured with two independent L/R transformers for low and high, for a total of four transformers.The core material is an original super permalloy with low distortion, wideband characteristics, and linear magnetic properties. In addition, to prevent unnecessary vibration, a special filler is used and the transformer body is housed in a floating structure in a case, achieving thorough resonance-free operation. A balanced amplifier circuit is used with a pair of amplifier circuits not only on the + side but also on the – side. This allows the signal system and the earth line to be completely separated, eradicating various problems caused by the earth line. In addition, since the signal system is a completely closed loop, the impact on sound quality caused by disturbances such as flux jumping in is reduced. In addition, in combination with the power amplifier B-2301, complete balanced drive from line to speaker output is possible. It is equipped with 3 tape systems, 2 phono systems, 2 line systems, 1 CD, and 1 tuner system each.It also has an adapter terminal, allowing you to connect sound effectors such as graphic equalizers and expanders. It is equipped with a source direct function, allowing you to jump the line level amplifier and output. It is equipped with an attenuator for level control. It is equipped with a full range of modes: Normal/Reverse/L+R/L/R, which is convenient for balancing in a multi-channel system. It is equipped with a center-through balance volume, and in the center position, it does not pass through the balance attenuator, which is advantageous in terms of sound quality. It features a natural wood-grain bonnet and side wood, a glass front panel, and an aluminum metal front panel. It features solid metal machined control knobs. It features an extra-thick power cord with polarity indication.ShippingWe will ship to the address registered on ebay. Shipping is available from Monday to Friday. Weekends and Japanese holidays are not available because Post Office is closed.Payment You can use Paypal, major Credit cards and Debit cards. Payment is due within 3 days of your purchase.We will ship the item within 3 days after receiving cleared payment. Please note Other points to note.Import duties and taxes are not included in the listed item prices and shipping charges.These charges are the buyer’s responsibility.Please check with your country’s customs office to determine what these additional costs will be before bidding or purchasing.

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