Denna har analoga ingångar + ett superfint riaa-steg inbyggt. No:5802 har fler digitala ingångar, men dock inga analoga.
Analog Input Stage
The foundation of the Nº5805 is its proprietary PureDirect™ 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 Nº 500 series Pure Phono stage with low-noise integrated circuits for high performance at lower cost. Also like the Nº 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.
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.
Building upon the superb analog platform, the Nº 5805 adds equally outstanding digital audio capability with the Mark Levinson PrecisionLink II™ DAC. The latest generation ESS Sabre 32-bit D/A converter with jitter elimination circuitry and a fully balanced, discrete current-to-voltage converter form the heart of the digital audio processing stage. Four digital audio inputs are provided: one coaxial and two optical S/PDIF, and one asynchronous USB for playback of high resolution PCM (up to 192kHz/32 bits) and DSD (up to DSD 5.6) files. The No 5805 includes MQA (Master Quality Authenticated) technology, which enables playback of MQA audio files and streams. A Bluetooth receiver equipped with AptX-HD enables the highest quality Bluetooth playback available.
• 1 x USB 2.0
• 1 x Coaxial S/PDIF
• 2 x Optical S/PDIF
• 192kHz/32 bit PCM and DSD 5.6 capability
• Bluetooth audio input including AptX-HD support
• MQA decoding and rendering ability
• 1 x balanced XLR stereo
• 2 x RCA stereo
• 1 x RCA Phono (MM/MC)
• HT processor pass-thru mode
• Line outputs: 1 x RCA stereo (variable)
• Headphone output: 1 x 6.35mm jack (front panel)
• Speaker outputs: 2 pairs high-current binding posts
• Control ports: Ethernet (RJ45), RS-232 (DB9), 12V trigger input/output and IR input (3.5mm jack)
• Webpage setup, configuration import/export, software updates
• Included handheld IR remote control
• Control modules for third-party automation
• EuP compliant / low-power standby
• All-new Nº 5000 series industrial design
• Designed, engineered and precision-crafted in the USA
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