Description
Accuphase DP-80l & DC-81l Vintage High End CD Laufwerk / DAC im Set Originalverpackung nicht vorhanden Technisch, Einwandfrei!!! Optisch , siehe Fotos Description DP-80L A CD transport designed to prevent interference and unwanted radiation from digital signals and high-frequency noise. The mechanism is mounted on an aluminum die-cast frame to prevent resonance, and floating from the chassis to cut off vibration transmission, thereby minimizing external vibration to the mechanism body. The rotating part is supported by a thick metal frame, and the whole is thoroughly strengthened against vibration.In addition, by adopting a solid frame structure as a whole, sound quality changes due to resonance and sound pressure of speakers are prevented, and stable operation is realized. It uses a master clock system that controls all operations with one clock.In the conventional method, two types were used, one for digital signal processing and the other for microprocessor. Therefore, the difference between the two oscillation frequencies causes a beat, which is a cause of sound quality degradation. In the DP-80L, this beat does not occur because it controls everything with one clock. It is equipped with two optical fiber systems based on the digital audio interface proposed by AccuPhase and established as the EIAJ standard, and a 75 Ohm coaxial output.The optical fiber has a transmission capacity of 10Mbit/sec, which, together with the attached quartz fiber, enables digital transmission with less transmission distortion and jitter. In optical transmission, the player and processor are electrically isolated from each other to prevent the inflow of unwanted noise components, thereby preventing the deterioration of sound quality. It is equipped with a full-fledged line filter to prevent the inflow and outflow of digital noise through the power supply. It has a simple design and the other function keys are stored inside the lower side panel. Exterior finished with gold-style scratch hairline finish panels and natural Persimmon sideboards. It comes with a fully functional wireless remote control. DC-81L A D/A converter compatible with 3 sampling frequencies released simultaneously with the DP-81L. The D/A converter uses the worlds first 20-bit discrete method for consumer use.The operating precision is different from the usual way of adding bits above or below 16 bits, and the precision of each bit is 1/2 of the original.20=9.54x10-7As a result, an excellent performance of 0.0005% actual distortion factor (pure distortion component only, 1 kHz) has been realized. In addition, quantization noise, which interferes with high-quality sound reproduction, is greatly reduced.The conversion method is a current addition type which is superior in linearity. It is a discrete method to realize the performance of the 20-bit theoretical limit value. Therefore, the circuit is composed of current switching elements and ultra-precision resistors. Each unit is strictly adjusted to realize the complete operation, and the strain (0 cross strain) at small output is removed. The digital filter uses an independent 20-bit 8 x oversampling digital filter on the left and right sides.The DC-81L filter uses digital calculation techniques to achieve an attenuation of -110dB between 24.1 and 328.7 kHz and a passband ripple within ? 0.00005%, which can degrade sound quality. An audio low-pass filter that cuts out unwanted bands uses a highly selected discrete GIC third order Butterworth active filter. As a measure against high-frequency noise, the digital filter and D/A converter are electrically isolated by an opto-coupler.Each bit signal output from the digital filter is optically transmitted through an opto-coupler (transmission band 7Mbit/sec) and converted back into an electrical signal, ensuring complete electrical isolation and preventing noise interference through the conductor.The output of the opto-coupler is fed to a magnetically and electrically isolated analog converter through a mother printed board outside the shield frame. Three sampling frequencies of 48 kHz, 44.1 kHz and 32 kHz are available.Switching is performed by automatically determining the frequency of the input signal. Since each of the three frequencies is equipped with a dedicated oscillator, out-of-band noise is reduced and jitter is prevented. The input terminals are equipped with a total Route 3 of a Route 3 for optical fiber and a Route 6 for coaxial cable. A noise shaper is installed to further reduce quantization noise.The noise shaper reduces noise within the audible band by using a technique that reduces noise by feeding back the rounding error generated by the digital filter to the next data. Equipped with digital de-emphasis, it is possible to play high-quality CDs with emphasis applied.The DC-81L achieves a deviation of ? 0.001 dB and a phase difference of less than 1.5 degrees with respect to the specified characteristics. The output of the converter is set to a level that does not require amplification, and the S/N and distortion characteristics are improved by only buffering in the audio stage.The circuit configuration of the audio stage is a discrete configuration push-pull DC servo connection system. Equipped with digital level control.The Remote Commander included with the DP-80L allows volume control from a remote location and was sold separately. Two RCA-type output terminals and one XLR-type balanced output terminal are installed. The digital and analog circuits are shielded with metal and each power supply is provided with a dedicated transformer to eliminate mutual interference. The left and right circuits are laid out on an independent printed board to prevent interference between channels together with a two winding transformer on the left and right. Measures against unwanted external radiation are taken, and leakage through the power supply is dealt with by a full-scale line filter.It is also shielded inside. The exterior is gold-style scratch hairline finish, and the side is equipped with a natural Persimmon sideboard. Specificaties / SpecificationsDP-80L Formatting CD standard formatError correction method : CIRCNumber of channels : 2 channelsRotation speed : 500 - 200 rpm (CLV)Performance speed : 1.2 to 1.4m/s, constantReading system Non-contact optical reading (using semiconductor laser)Laser GaAlAs (double hetero diode)Digital Output Format / Level(in accordance with EIA) Formatting : Digital Audio InterfaceOptical optical output : -21 to -15dBm (EIAJ)Emission wavelength : 660 nmCoaxial : 0.5Vp-p/75 OhmSemiconductor used Transistor : 6IC : 21Diode : 20 pcsPwer AC100V/117V/220V/240V, 50Hz/60HzPower consumption 15WExternal dimensions Width 475x Height 135 (Including Legs) x Depth 373 mmWeight 15.0kg DC-81L Type Digital processorFormattingEIA standard formatQuantize Number :Sampling frequency : 16-bit straight line32.0 kHz +/- 0.1%44.1 kHz +/- 0.1%48.0 kHz +/- 0.1%Frequency characteristic 4.0 Hz to 20 kHz +/- 0.3 dBD/A converter Discrete 20-bitDigital filter 20-bit 8 x oversamplingNoise shaper functionDigital de-emphasis functionDeviation +/- 0.001 dBTotal harmonic distortion factor + noise 0.0016%(1,000Hz)0.002% (20 Hz to 20 kHz)S/N 120dBDynamic range 98dBChannel separation 112dBRated Output / Impedance Balanced : 2.5V/50 Ohm (25 Ohm / 25 Ohm), balanced XLR typeUnbalanced : 2.5V/50 ohm, RCA phono jackOutput level control 0 - -40dB, 1 dB step (digital type)Digital input format level(in accordance with EIA) Formatting : Digital Audio InterfaceOptical : Received power of -15 to -27dBmCoaxial : 0.5Vp-p/75 OhmSemiconductor used Transistor : 89FET : 5 pcsIC : 98Diode : 54 pcsPower supply voltage AC100V/117V/220V/240V, 50Hz/60HzPower consumption 35WExternal dimensions Width 475x Height 135 (Including Legs) x Depth 373 mmWeight 15.9kg ------------------------------------Fragen zum Klang Um Ihre und unsere Zeit nicht unnütz zu vergeuden, beantworten wir keine Fragen zum Klang, z.B. wie das Gerät sich mit dem Lautsprecher x und den Kabeln y verhält. Noch Fragen?Bitte klicken Sie rechts oben im Kasten Angaben zum Verkäufer auf den Punkt Verkäufer kontaktieren!----------------------------------Please, it is not fair to ask what is the lowest price,if hes going to buy the items we sell, then send us the proposal via eBay and not via news,if we believe that the offer sie affordable accept it !!!thank you,---------------------------------------------------Bitte, es ist nicht fair zu fragen, was ist der niedrigste Preis,wenn sie vor haben aus unsere Artikel sortiment ernsthaft zu kaufen , dann senden Sie uns den Preisvorschlag über eBay und nicht über Nachrichten,wenn wir glauben dass ihre Preisvorschlag interessant ist, dann akzeptieren wir es !!!danke. -----------------------Hallo, eine Rückgabe ist kein Problem,zu beachten ist, die Geräte soll in der gleiche Zustand sein wie sie erhalten haben, ohne Technische Problemen!!!ohne Kratzer oder sonstigen Gebrauchsspuren!!!der Verpackung soll der Original und kein Neutral sein!!!die Versandkosten ( Versand und Rückversand) trägt der Käufer!!!bei weiteren Fragen , stehen wir gerne zu Verfügung. die Rückgabe geht an, W&W AudioDe Reulver 977544RT EnschedeNL------------------------------------------Wir geben drei Monaten Garantie für unsere Gebrauchte Geräte bei Neugeräte geben wir die Volle Garantie Erfolgt der Verkauf in Kommission für eine Privatperson ist weder die Mehrwertsteuer ausweisbar noch eine Gewährleistung gegeben ----------------------------------------- ------------------------------------------------------Kaufabwicklung: Die Zahlung sollte innerhalb 4 Werktage abgeschlossen sein. Oder Käufer und Verkäufer haben sich anders geeinigt, so können Sie zum Beispiel den Artikel Kaufen, durch eine Anzahlung sichern und zu einem späteren Zeitpunkt zahlen. (Diesbezüglich bitte im Vorfeld zu klären!)------------------------------------------------ Ein Hinweis noch zum mitgelieferten Zubehör: Auch wenn im serienmäßigen Lieferumfang eventuell mehr Zubehör enthalten sein sollte wird lediglich das mitgeliefert was unter Mitgeliefertes Zubehör auch aufgeführt ist International bidders please ask the shipping price to your country before placing a bid! Wir bieten eventuell auch Inzahlungnahme/Tausch von/mit anderen Geräten an. Eine Finanzierung ist leider nicht. Noch irgendwelche Fragen? Kein Problem, schickt uns eine Mail und wir werden diese selbstverständlich so schnell wie möglich beantworten. Bevor sie jedoch die Fragen stellen lesen sie sich bitte zuerst den Beschreibungstext sorgfältig durch, viele Fragen beantworten sich dann erfahrungsgemäß von selbst. Der Verkauf erfolgt differenzbesteuert gem. §25a UStG, daher kann die Umsatzsteuer auf der Rechnung nicht separat ausgewiesen werden.
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