Mark Levinson NO534 Dual-Monaural Amplifier - NO534The pursuit of perfect amplification is a well-known theme in high-end audio. New technologies present new approaches, while looking to the past provides inspiration for the future. It was in that spirit that the Mark Levinson® ? 534 amplifier was developed: a design advised by the traditions and art of classic Mark Levinson amplifier designs, and with a specific target sound: a deep, expansive soundstage, accurate image placement, extended low bass response with good pitch definition, and detailed high frequencies free from “etching.” To that end, the Mark Levinson engineering team started with the following requirements:Harmonic distortion <0.02% at 1kHz and <0.2% at 20kHzBandwidth extending from 0.2Hz to 120kHz, and beyond if possibleCritically damped square wave response, with leading and trailing edges free of any slewing artifacts, and a slew rate of at least 100V/µsMaximized open-loop linearity and bandwidth, with global negative feedback in the range of 12-20dB and without nested feedback loopsThis fully differential, fully discrete, dual-monaural Pure Path amplifier drives virtually any loudspeaker effortlessly for impeccable imaging, musicality, and openness. A direct-coupled signal path; a highly linear, low-feedback design; and voltage gain and drive stages operating in class A, are joined by the modern system integration capabilities provided by Ethernet, RS-232, and USB for monitoring and network control. Housed in a 6000-series aluminum chassis, like all Mark Levinson equipment, the ? 534 is designed and handcrafted in the USA.Mark Levinson Pure Path Circuit DesignSince 1972, Mark Levinson has been dedicated to the uncompromising art of sound, with the guiding principle of musical purity above all else. To achieve that goal like never before, Mark Levinson engineers scoured company archives, ultimately developing a circuit-design philosophy called Pure Path. On a conceptual level, its hallmark principles include a discrete, direct-coupled, fully balanced, dual-monaural signal path that delivers unrestricted, uncompromised sonic purity.Far from merely arranging high quality components in an intelligent manner, Pure Path is the meeting of science and art: Mark Levinson engineers are tasked to create the best possible measured AND subjective performance. To quote Albert Einstein: “Everything should be made as simple as possible, but not simpler.”Pure Path highlights in the ? 534 include Folded Cascodes, an extremely high bias current, and usage of very little negative feedback.The Folded CascodeMark Levinson components are designed around a Pure Path amplifier circuit concept that makes heavy use of a circuit design element called a cascode. Originally created for improving the bandwidth of vacuum tube circuits in radios, Mark Levinson engineers deploy cascodes in Pure Path circuit designs to both improve bandwidth and enhance linearity. A cascode combines two transistors so that they operate as a single composite device that functions like a single transistor, using the wanted characteristics of each component transistor, and rejecting the unwanted characteristics.Mark Levinson engineers began their design of the gain stage with pairs of JFETs (junction field-effect transistors), chosen for their low noise and high gain. JFETs achieve these characteristics in part by being large, and with their large size comes nonlinear gain – or distortion. To mitigate this, BJTs (bipolar junction transistors) were added to the circuit. The BJTs exhibit very low input impedance and very high output impedance, which translates to excellent bandwidth and linearity. By creating a cascode of the JFETs and BJTs, they created a design with the best characteristics of both sets of devices.Engineers then connected the output of the cascode to another transistor of the opposite “gender.” Current flows through it in the opposite direction to “turn around” the direction of the signal current. This special connection is called a Folded Cascode and it is a hallmark of the Pure Path circuit: high gain with low noise, wide bandwidth, and excellent linearity.Gain StructureThe audio circuitry in the ? 534 has been optimized for the best possible open-loop performance. As a result, very little negative feedback is necessary, and the amount employed could be adjusted to achieve certain subjective or objective results. The open-loop gain and bandwidth of the circuit were painstakingly set using precision resistors and compensation capacitors, and additional precision resistors were employed to compose the feedback network.Military Grade ComponentsAll Mark Levinson equipment employs electronic components carefully chosen for their specific task. Gain-stage JFET pairs have high gain, low noise, low distortion, and because they are encapsulated in the same package, the two devices operate under nearly identical conditions. Capacitors used in critical filtering locations are film types, noted for their consistent performance regardless of temperature and frequency. Finally, resistors in critical gain-setting and feedback locations use tantalum nitride thin-film elements. An extremely costly material, tantalum nitride typically finds use in sensitive military equipment because it is unusually stable with respect to temperature, exhibits very low noise, and is unaffected by magnetic fields. In fine audio equipment, those characteristics make the sound even more revealing and effortless, free of the low-level nonlinearities caused by lesser resistive materials as they heat and cool under dynamic conditions. Housed in an aircraft-grade 6063-T5 extruded aluminum chassis, the ? 534 features extremely high build precision, to exceedingly low tolerances.Completing the Signal PathThe ? 534 offers balanced and single-ended inputs for use with virtually any preamplifier or source player with variable output. For connection to loudspeakers without needing tools for a secure link, the ? 534 features four pairs of gold-plated binding posts with Mark Levinson Hurricane terminal knobs to support either standard or bi-wired loudspeaker connections. Speaker cables terminating in banana plugs can be used in the USA and other non-European countries. System-integration connectivity includes Ethernet/IP control, RS-232, USB for monitoring and configuration via web page, plus 12V triggers.Designed and Handcrafted in the USALike all Mark Levinson equipment, the ? 534 is proudly designed and handcrafted in the USA. A dedicated Engineering Center of Excellence in Shelton, CT houses Mark Levinson engineering and product development, just a state away from small-batch production at Mack Technologies in Westford, MA by a team of craftsmen who bring all Mark Levinson equipment to life.Features:Pure Path discrete, direct coupled, fully balanced, dual-monaural signal pathFully differential class-AB architecture, operates in class A for most listening conditions6000-series aluminum chassis, extremely high precision, exceedingly low tolerancesExpansive, fine imaging, extended low frequency response/pitch, and natural high frequenciesRated for 250wpc into 8 ohms, 500wpc into 4 ohms, with 2-ohm stabilitySystem-integration connectivity: Ethernet, IP, RS-232, triggers, web monitoring and controlPainstakingly optimized little negative feedback, bandwidth, slewing, and open-loop linearityCustom-designed, low noise toroid with separate secondary windings for each output stageDesigned and handcrafted in the USASpecifications:Input Connectors: One pair Balanced, one pair single-endedSpeaker Connectors:Four pairs of Hurricane loudspeaker outputsBanana-plug sockets per channel, except on 230 VAC versionControl I/O: Ethernet, RS-232, Trigger In and Out, USB-A, Mini USBRated Output Power: 250 wpc RMS @ 8?, 20Hz to 20kHz @ <0.3% THD, full output from 2.83VRMSFrequency Response: 10Hz to 20kHz ±0.2dBSignal-To-Noise Ratio: >85dB, reference level: 2.83 VRMSInput Impedance: 60 k? balanced; 30 k? unbalancedVoltage Gain: 26dBInput Sensitivity: 2.83VRMS output at 142mVRMS inputPower Requirements: 100V~, 120V~, 230V~, factory set for destination country, 1500WApproximate Dimensions:Height: 7 to 7.75Width: 17.75Depth: 20Approximate Weight:Unit: 107 lbsShipping: 124 lbs

Description: Solid-state dual-mono power amplifier. Frequency response: 20Hz-20kHz, ±0.1dB. THD: <0.5% (FTC). Power output: 125Wpc into 8 ohms (21dBW), 250W minimum continuous into 4 ohms (24dBW), 500Wpc minimum continuous into 2 ohms (27dBW), 500W into 8 ohms bridged (27dBW). Input impedance: 100k ohms balanced, 50k ohms single-ended. Voltage gain: 26.8dB. Input sensitivity: 130mV for 2.83V output, 1.44V for full output. Output impedance: ±0.05 ohms, 20Hz-20kHz. Damping factor: >800, 20Hz-20kHz into 8 ohms. S/N: >80dB (ref. 1W). Power consumption: typically 260W at idle, 110W in standby.Dimensions: 17.56 (446mm) W by 9.3 (237mm) H by 18.85 (479mm) D. Shipping weight: 112 lbs (50.9kg).Serial number: 1384Suitable for bridged operation and biamplification. Very good condition, regularly serviced from new. Minor scratches on various surfaces.Selling due to downsizing hi fi to an integrated unit. Owing to the size and, especially, weight of the unit I am unable to post / courier this unit. So sale is on the basis of buyer collect or reasonably local delivery.

[Description] Top surface has stains/scratches, etc.There is a ding on the corner of the heat sink.The side of the product is generally in good condition. This is the first Mark Levinson power amplifier series after the brand was taken over from MLAS to madrigal audio. 331L was the smallest power amplifier in the series, but it was also the fastest response amplifier in the series. It has a powerful power supply unit that doubles the output value when the speaker impedance value is reduced by 1/2 as per the theoretical value, achieving both high-torque and high-speed response. AccessoriesAC cable, XLR 1-3 jumper x 2 [Shipping] Free shipping by Fedex or DHL or EMS(Japan Post)Insured, Trackable, Including handling cost.Within 10 days of handling until shipment. Usually arrives in 3-7 days after shipping.However, items that require special time for customs clearance, or items with a remote destination will take longer. [International Buyers - Please Note] Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyers responsibility. Please check with your countrys customs office to determine what these additional costs will be prior to buying. These charges are normally collected by the delivering freight (shipping) company or when you pick the item up do not confuse them for additional shipping charges. We do not mark merchandise values below value or mark items as gifts - US and International government regulations prohibit such behavior. Extend Peace Your Sound !!

Highlights:Externe Kühlkörper in KosmetikqualitätIP, RS-232, 12-V-Trigger ein/ausEntworfen und handgefertigt in den USAProduktinformationen:Erleben Sie mit dem ? 5302 lebendigen, dynamischen Klang bei jeder Lautstärke. Dieser hochwertige Verstärker ist flexibel, elegant und leistungsstark und liefert makellosen Klang – und viel Leistung – um High-End-Lautsprecher anzutreiben. Teilen Sie das volle Potenzial Ihrer Musik, während jedes komplizierte Detail um Sie herum Gestalt annimmt.Einwandfreie VerstärkungUmgeben Sie sich mit satten Klangwellen, die den gesamten Raum füllen. Das ? 5302 enthält ein robustes Netzteil, das im richtigen Moment genau die richtige Menge an Leistung liefert – damit Sie explosive Dynamik und subtile Details ohne Verzerrung erleben können.Flexible LeistungAls Bridgebale Dual-Mono-Verstärker kann der ? 5302 mühelos zwei Lautsprecher mit Strom versorgen oder so konfiguriert werden, dass er nur einen mit Strom versorgt. Dies gibt Ihnen die Möglichkeit, einen zweiten Verstärker für die doppelte Leistung hinzuzufügen, sodass Sie die ultimative Kontrolle über Ihr High-End-Audiosystem und Ihr Hörerlebnis haben.Ikonisches DesignMit mutiger Geometrie und luxuriösen Oberflächen ist die ? 5302 ebenso elegant wie kraftvoll. Die massiven Aluminiumplatten fließen nahtlos in ein elegantes Glasdisplay über. Eine große Standby-Taste wird von einem dezenten Ringlicht eingefasst, das den Betriebszustand anzeigt. Zusammen ergeben diese schönen Details einen atemberaubenden, hochwertigen Verstärker, der Ihr Audiosystem vervollständigt.Technische Daten:EingängeSymmetrische XLR- und unsymmetrische RCA-EingängeVerstärkungKanäle der Klasse AB: 2 x 135 Watt pro Kanal an 8 ?Die Leistung verdoppelt sich auf 270 Watt pro Kanal an 4 ?Leicht überbrückbar für Mono 1 x 550 W an 4 ? mit einem rückseitigen Schalter2? laststabil

Highlights:Externe Kühlkörper in KosmetikqualitätIP, RS-232, 12-V-Trigger ein/ausEntworfen und handgefertigt in den USAProduktinformationen:Erleben Sie mit dem ? 5302 lebendigen, dynamischen Klang bei jeder Lautstärke. Dieser hochwertige Verstärker ist flexibel, elegant und leistungsstark und liefert makellosen Klang – und viel Leistung – um High-End-Lautsprecher anzutreiben. Teilen Sie das volle Potenzial Ihrer Musik, während jedes komplizierte Detail um Sie herum Gestalt annimmt.Einwandfreie VerstärkungUmgeben Sie sich mit satten Klangwellen, die den gesamten Raum füllen. Das ? 5302 enthält ein robustes Netzteil, das im richtigen Moment genau die richtige Menge an Leistung liefert – damit Sie explosive Dynamik und subtile Details ohne Verzerrung erleben können.Flexible LeistungAls Bridgebale Dual-Mono-Verstärker kann der ? 5302 mühelos zwei Lautsprecher mit Strom versorgen oder so konfiguriert werden, dass er nur einen mit Strom versorgt. Dies gibt Ihnen die Möglichkeit, einen zweiten Verstärker für die doppelte Leistung hinzuzufügen, sodass Sie die ultimative Kontrolle über Ihr High-End-Audiosystem und Ihr Hörerlebnis haben.Ikonisches DesignMit mutiger Geometrie und luxuriösen Oberflächen ist die ? 5302 ebenso elegant wie kraftvoll. Die massiven Aluminiumplatten fließen nahtlos in ein elegantes Glasdisplay über. Eine große Standby-Taste wird von einem dezenten Ringlicht eingefasst, das den Betriebszustand anzeigt. Zusammen ergeben diese schönen Details einen atemberaubenden, hochwertigen Verstärker, der Ihr Audiosystem vervollständigt.Technische Daten:EingängeSymmetrische XLR- und unsymmetrische RCA-EingängeVerstärkungKanäle der Klasse AB: 2 x 135 Watt pro Kanal an 8 ?Die Leistung verdoppelt sich auf 270 Watt pro Kanal an 4 ?Leicht überbrückbar für Mono 1 x 550 W an 4 ? mit einem rückseitigen Schalter2? laststabil

Experience the pinnacle of audio quality with the Mark Levinson 331 Stereo Amplifier. This exceptional amplifier delivers breathtaking sound reproduction, capturing every nuance and detail of your favorite music.The Mark Levinson 331 is a high-performance amplifier designed to elevate your listening experience. With its robust construction and advanced engineering, it provides clean and powerful sound delivery. The boxless option allows for a more affordable price, making it an excellent choice for audiophiles who prioritize performance over packaging.Featuring high-fidelity audio reproduction, the Mark Levinson 331 ensures an immersive and lifelike soundstage. Its wide frequency response and low distortion guarantee accurate and precise sound reproduction across the entire audio spectrum. Whether youre a discerning music lover or a professional audio enthusiast, this amplifier will satisfy even the most demanding ears.While it doesnt include the original box, the Mark Levinson 331 is meticulously maintained and in excellent condition. It has been carefully tested and functions flawlessly, ready to deliver exceptional audio performance right out of the box.Upgrade your audio system with the Mark Levinson 331 Stereo Amplifier. Immerse yourself in the richness and depth of your music like never before. Dont miss out on this opportunity to own a piece of audio excellence. Bid or buy now! Technical Specification: Output Power: 100 watts per channel into 8 ohms, 200 watts per channel into 4 ohms Frequency Response: 20 Hz to 20 kHz (+0, -0.5 dB) Total Harmonic Distortion (THD): <0.1% at 1 kHz at rated power Signal-to-Noise Ratio: >95 dB Channel Separation: <0.01 dB Input Impedance: 50 k? Output Impedance: 0.05 ohms Damping Factor: >800 Tone Control: Bass and treble adjustment with ±3 dB at 100 Hz and 10 kHz Power Consumption: 300 watts Dimensions (WxHxD): 44.5 cm x 13.3 cm x 38.1 cm Weight: 60 kg Present slight scratches excellent technical conditionWithout Original Factory packages and manuals 1 Year Warranty Sent in 2-4 days after payment Please ask for any question

Highlights:Externe Kühlkörper in KosmetikqualitätIP, RS-232, 12-V-Trigger ein/ausEntworfen und handgefertigt in den USAProduktinformationen:Erleben Sie mit dem ? 5302 lebendigen, dynamischen Klang bei jeder Lautstärke. Dieser hochwertige Verstärker ist flexibel, elegant und leistungsstark und liefert makellosen Klang – und viel Leistung – um High-End-Lautsprecher anzutreiben. Teilen Sie das volle Potenzial Ihrer Musik, während jedes komplizierte Detail um Sie herum Gestalt annimmt.Einwandfreie VerstärkungUmgeben Sie sich mit satten Klangwellen, die den gesamten Raum füllen. Das ? 5302 enthält ein robustes Netzteil, das im richtigen Moment genau die richtige Menge an Leistung liefert – damit Sie explosive Dynamik und subtile Details ohne Verzerrung erleben können.Flexible LeistungAls Bridgebale Dual-Mono-Verstärker kann der ? 5302 mühelos zwei Lautsprecher mit Strom versorgen oder so konfiguriert werden, dass er nur einen mit Strom versorgt. Dies gibt Ihnen die Möglichkeit, einen zweiten Verstärker für die doppelte Leistung hinzuzufügen, sodass Sie die ultimative Kontrolle über Ihr High-End-Audiosystem und Ihr Hörerlebnis haben.Ikonisches DesignMit mutiger Geometrie und luxuriösen Oberflächen ist die ? 5302 ebenso elegant wie kraftvoll. Die massiven Aluminiumplatten fließen nahtlos in ein elegantes Glasdisplay über. Eine große Standby-Taste wird von einem dezenten Ringlicht eingefasst, das den Betriebszustand anzeigt. Zusammen ergeben diese schönen Details einen atemberaubenden, hochwertigen Verstärker, der Ihr Audiosystem vervollständigt.Technische Daten:EingängeSymmetrische XLR- und unsymmetrische RCA-EingängeVerstärkungKanäle der Klasse AB: 2 x 135 Watt pro Kanal an 8 ?Die Leistung verdoppelt sich auf 270 Watt pro Kanal an 4 ?Leicht überbrückbar für Mono 1 x 550 W an 4 ? mit einem rückseitigen Schalter2? laststabil