No.5805內建的數位類比轉換器有4組數位輸入，其中包括光纖、數位同軸與非同步傳輸的USB Audio，它內建Mark Levinson Precision Link II數位類比轉換電路，能有效消除數位傳輸的時基誤差，在ESS Sabre 32(32 bit DAC晶片)之後並不是像多數製品用OPA晶片，而是以分立元件(電晶體、電阻、電容、電感)製作全平衡I/V轉換電路，如此可以不受限於OPA晶片的特性，從音訊的源頭(數位音訊剛剛轉換為類比)就充分掌握性能與聲音風格。No.5805與No.5802差別是在於No.5805有唱頭放大輸入，有XLR與RCA類比輸入。

Nº5805
Analog Input Stage

The foundation of the Nº 5805 is its proprietary PurePath signal path- a fully discrete, direct-coupled, dual-monaural line-level preamp circuit, for which the Shelton design team has two patents pending. A unique single gain stage mated to a digitally controlled resistor network for volume adjustment maintains maximum signal integrity and widest possible bandwidth. Each of its three stereo line level inputs—one balanced XLR and two single-ended, using custom Mark Levinson RCA connectors—has its own individual high-reliability signal switching relays.

A newly designed Phono stage features a hybrid gain topology, mating key discrete components from the acclaimed 500 Series Pure Phono stage with low-noise integrated circuits for high performance at lower cost. Also like the 500 Series, a hybrid active/passive RIAA equalizer employs precision resistors and polypropylene capacitors for exceptional accuracy and sonic clarity. The user can select MM/MC gain and infrasonic filter from the setup menu, while capacitive and resistive loading settings are easily accessed from the rear panel.

Amplification
The fully discrete, direct-coupled, class AB amplifier channels get their power from an oversized (500+ VA) toroidal transformer with individual secondary windings for the left and right channels. The voltage gain stage employs a topology directly descended from the acclaimed Nº 534 amplifier, which is mated to an output stage comprising two high-speed driver transistors operating in class A and six 260V, 15A output transistors. Two Thermal-Trak devices in a unique configuration guarantee stable output bias regardless of load or temperature. Four 10,000-microfarad capacitors per channel, located directly on the output stage circuit board, easily provide enough current for a conservative 125W/channel at 8 ohms, nearly 250W/channel at 4 ohms, and stable operation down to 2 ohms. Variable line-level RCA outputs allow system expansion and flexibility..........

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得獎項目
Mark Levinson Nº 5805 Fidelity winner 2020得獎
Mark Levinson No5805 _hifinews得獎