金嗓子升级DP560到DP570，貌似是常规升级。

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https://www.noteworthyaudio.com/ ... d-cd-player-and-dac

Newly designed next-generation SA-CD/CD drive combined with exquisite disc tray and ultra-quiet disc loading mechanism for silky smooth operation. Innovative MDS+ type D/A converter using four parallel DAC circuits ensures highly accurate D/A conversion of DSD and PCM signals. Separate configuration of transport and processor sections, each equipped with a set of HS-LINK, coaxial, optical, and USB (input only) connectors. USB connector provides support up to 384 kHz/32-bit and 11.2896 MHz/1-bit DSD.

The SA-CD/CD drive employs a high-stiffness construction that not only minimizes vibrations from internal rotation but also absorbs any external vibrations, whether large or small. The mechanical base is fully integrated with the massive and highly rigid chassis.

Mechanical isolation between the traverse mechanism and the loading mechanism is provided by newly developed silicone type viscous dampers whose shape and material composition have been carefully optimized. Four of these are used to realise a floating design.

Even though they may appear flat to the unaided eye, media discs often have slight eccentricities in dimensions and weight, as well as warping. When spinning at high speed, this leads to various types of vibrations and wind noise. Based on thorough research into these issues, the DP-570 features a strengthened rotation system and effective vibration frequency control, along with further improved vibration insulation. To combat wind noise, a larger bridge enabling air flow control is used, along with various other technology-based measures that result in a significant improvement in quietness. Disc rotation noise is reduced to about one third as compared to earlier designs.

The analog filter designed to remove so-called aliasing noise in the very high frequency range employs 5-pole Butterworth analog filters with extremely flat frequency response in the passband. In order to prevent unwanted interaction, completely separate low-pass filters are provided for the line and balanced signal paths.



Specifications:


Transport Section:

Format: Super Audio CD (SA-CD), CD, DSD Disc and DATA Discs

Pickup: Non Contact optical pickup

Laser Diode Wavelength: 655 nm SA-CD and 790 nm for CD

HS Link Version 2 Output: connector type RJ45, Coaxial and Optical.

Digital Processor Section:

HS-Link Ver.2 RJ45 input: With sampling frequency 32Khz to 192kHz, 352.8kHz, 384 kHz (16 to 32 Bit 2 Channel PCM). 2.8224 MHz, 5.6448 MHz (1 Bit 2 channel DSD).

Optical Input: With sampling frequency 3kKHz to 96kHz, (16 to 24 Bit 2 Channel PCM)

USB Input: With sampling frequency 32Khz to 192kHz, 352.8kHz, 384 kHz (16 to 32 Bit 2 Channel PCM). 2.8224 MHz, 5.6448 MHz and 11.2896 MHz (1 Bit 2 channel DSD) 11.2896 MHz :ASIO only

Digital Analogue Converter: 4MDS+ principle

Frequency response: 0.5 - 50,000 Hz +0, -3.0 dB

Total harmonic distortion: Max. 0.0006% (20 - 20,000 Hz,

Signal-to-noise ratio: 119 dB

Dynamic range: 116 dB

Channel separation: 117 dB

Output voltage and impedance: BALANCED: 2.5 V, 50 ohms, balanced XLR type,with phase selector LINE: 2.5 V, 50 ohms, RCA type phono jack

Output level control: 0 to -80 dB in 1-dB steps (digital type)

General:

Power requirements: 230 V AC, 50 Hz (Voltage as indicated on rear panel)

Power consumption: 18 Watts

Max. dimensions: Width 465 mm, Height 151 mm, Depth 393 mm

Mass: 18.8 kg net, 25.0 kg in shipping carton


https://www.accuphase.co.jp/model/dp-570.html

DP-570は、一体型SA-CD/CDプレーヤーのリファレンス機DP-750の優れたノウハウを受け継いで完成しました。 静寂でスムーズなディスク・ローディング機構を搭載。高剛性/低重心のSA-CD/CDドライブには、新開発の弾性ダンパーを採用し、読み取り機構への共振を大幅に削減することで、ディスクに刻まれた情報を正確に読み取ります。D/Aコンバーターは「ES9028PRO」を4回路並列駆動。アキュフェーズ独自の『MDS+変換方式』により、ひずみ率、雑音特性、リニアリティなどの性能を向上、デジタル信号をアナログ信号へ正確に変換します。入力端子には、HS-LINK Ver.2、同軸、光、USB端子を装備し、多彩なディジタル音源に対応します。また、ヘアライン仕上げのアルミ製トッププレートを採用することにより、筐体の剛性も増しながら、見た目のグレード感の向上に貢献しています。

高品位『SA-CD/CDドライブ』搭載
4回路並列駆動『MDS+変換方式D/Aコンバーター』搭載
ライン/バランス独立構成『Direct Balanced Filter 』回路搭載
豊富なトランスポート出力端子とディジタル入力端子を装備
データ・ディスク再生機能
トランスポート出力端子とディジタル入力端子を装備、その間にDG-68を接続して音場補正が可能
再生する曲順を設定可能なプログラム演奏機能
サンプリング周波数とビット数を表示