With superb analog performance, advanced digital audio capability and discrete class A Pure Phonostage, the Nº 585.5 reproduces any source material with exceptional realism.
The Mark Levinson Nº 585 has swept up best in class awards and countless accolades around the world, and is now widely regarded as perhaps the finest integrated amplifier ever made. Now, the Nº 585.5 redefines the playback quality of a classic medium; by adding the same Pure Phono stage found in the award winning Nº 523 and Nº 526 preamplifiers taking the reproduction of any source material to new heights of realism.
The foundation of the No 585.5 is its fully discrete, mirror-imaged, dual-monaural analog circuitry featuring individual signal switching relays for each of its five stereo inputs: one XLR and three RCA plus a Stereo Pure Phono stage. Volume controls use discrete R2R ladders and low-noise analog switches for the widest possible bandwidth and maximum signal integrity. The fully-differential Class AB power stage includes an oversized 900VA toroidal transformer with individual secondary windings for the left and right channels.
Each elegantly simple amplifier channel utilizes twelve output transistors and multiple smaller local capacitors that allow them to be placed physically closer to the amplifiers for greater transient response when power is needed immediately. This robust architecture results in a conservative power rating of 200W per channel. System integration and expansion are possible using the stereo RCA pre-outs which can operate full-range or with an included switchable, second-order, 80Hz crossover filter allowing for seamless integration into 2.1-channel systems with powered subwoofers.
Pure Phono: Class A for a Classic Medium The Pure Phono stage is a discrete design with no op-amps and operates exclusively in class A throughout, employing tantalum nitride thin-film resistors and polypropylene capacitors with exceptionally low tolerances.
A fixed-gain moving magnet (MM) section with five capacitive cartridge-loading settings, and a moving coil (MC) section with three gain settings and 10 resistive cartridge-loading settings ensures optimization for any cartridge. And an ultrasonic filter intelligently compensates for rumble and warping. The Pure Phono stage also contains physically separated channels and balanced inputs for sonic purity.
Mark Levinson No. 585.5 Integrated amplifier
PHONO STAGE
• RIAA FREQUENCY RESPONSE: 20Hz to 20kHz, ±0.3dB
• INFRASONIC FILTER DEFEATABLE, 15Hz, 2nd order (12dB/octave)
• MOVING MAGNET MODE
INPUT RESISTANCE: 47kΩ
INPUT CAPACITANCE: selectable; 50, 100, 150, 200, or 680pF
GAIN: 40dB @ 1kHz
THD+N, 20Hz to 20kHz, 2VRMS output: <0.03%
• MOVING COIL MODE
INPUT RESISTANCE: selectable; 20, 33, 50, 66, 100, 200, 330, 500, 1000, or 47k
INPUT CAPACITANCE: 50pF
GAIN: selectable; 50, 60, or 70dB @ 1kHz
THD+N, 20Hz to 20kHz, 2VRMS output: <0.02%, 50 or 60dB settings, <0.04%, 70dB setting
AMPLIFIER SECTION
• OUTPUT POWER: 200W RMS per channel @ 8Ω, 20Hz – 20kHz
• DAMPING FACTOR: >400 @ 20Hz, referred to 8Ω
• FREQUENCY RESPONSE: 20Hz – 20kHz, ±0.13dB; 2Hz – 250kHz, +0.2dB/–3dB
• SIGNAL-TO-NOISE RATIO: >98dB (20Hz – 20kHz, unweighted); >103dB (20Hz – 20kHz, A-wtd), referred to full output – maximum volume setting
• VOLTAGE GAIN: 40.7dB (maximum volume setting)
• TOTAL HARMONIC DISTORTION: <0.01% @ 1kHz, 200W, 8Ω; <0.1% @ 20kHz, 200W, 8Ω
PREAMPLIFIER SECTION: ANALOG
• INPUT IMPEDANCE: >45kΩ (RCA & XLR)
• INPUT OVERLOAD: >5.5VRMS (RCA & XLR)
PREAMPLIFIER SECTION: DIGITAL
• DAC OUTPUT VOLTAGE @ FULL SCALE (0dBFS): 3.7VRMS
• DAC FREQUENCY RESPONSE: 20Hz to 20kHz, +0 / ¬–0.2dB
• DAC THD, FULL SCALE (0dBFS): <0.0001% @ 1kHz, <0.0003% @ 20kHz
• DAC SNR (referred to 3.7V RMS / 0dBFS output): >120dB (A-weighted)
• PCM SAMPLE RATES/BIT DEPTH: 32, 44.1, 48, 88.2, 96, 176.4, or 192kHz; up to 32 bits
• DSD: Native or DoP (DSD over PCM), single- and double-speed (2.8 and 5.6MHz)
DIMENSIONS: 193mm x 434mm x 506mm
WEIGHT: 34kg