Mark Levinson No. 33H Monoblock Amplifiers

Description: Mark Levinson No. 33H Monoblock Amplifiers Mark Levinson No. 33H Monoblock Amplifiers General: Despite being massively overbuilt these unique amplifiers are capable of delivering delicate, detailed, yet powerful presentation.Based on the flagship No. 33, the 33H (meaning half of a 33) provides 150W per side into 8 Ohms and 300W into 4 Ohms making it a perfect match for high efficiency speakers like Wilson.Features no less than four 60,000 uF worth of capacitors (that totals an astounding 1/4 Farad), enough to take down a elephant at full speed.The most interesting thing about the design is that it employs an AC regeneration system for the input and driver stages so you are essentially getting an amplifier and an AC regenerator in one box.This results in a 175 lb package (each amp) which doesn't take as much room as you would have guessed since it sits upright and can be tucked behind the speaker in a large room.We've gone through each amplifier to make sure they are working perfectly and found no issues whatsoever. They are currently configured for 220V/240V with a matching plug as the previous owner plugged these into a dedicated power circuit in his special HiFi room for best results.The ideal cables would be a set of Transparent Opus MM2 which were custom matched by Transparent to this amplifier. See link to them below. Brand Background: After working in various recording studios and, as legend has it, creating the sound mixer for the Woodstock Music Festival, Mark Levinson began hand-crafting high-end stereo components. His first product, the LNP-1, was a rack-mounted system with two large VU meters and a high performance op-amp module. And with every subsequent product, the legend grew. Ownership: Second Owner Connections: • Dual parallel sets of speaker binding posts accepting spades• 220/240 Power Plug• XLR and RCA inputs• RJ-45 Mark Levinson Proprietary Link Ports General Sound: Neutral sound with little to no coloration Cosmetic Condition: 7 - Some Wear and Light Scratches Working Condition: Working perfectly and tested in our lab. Included: Just the two amplifiers and captive power cords. Packing & Shipping Will be packed using our highly developed in-house process and custom packing materials. Shipping via freight w/insurance strapped to a pallet for a flat $775 within the lower 48 US States. We ship worldwide several times a month so please inquire for a quote. Original MSRP: $19,950.00 Dimensions - EACH: 11" (279mm) W by 18.5" (470mm) H by 22.88" (581mm) D. Weight: 175 lbs each mono amplifier. 350 lbs both amplifiers. Age: 2000 Testing Process: We start with a visual inspection of all internal components to make sure that there are no signs of heat stress or damage. Capacitors are checked for telltale signs of predictive failure including bulging, shrunken wrappers, or physical leakage. We also inspect the PCBs for discoloration from resistors or transistors that may have been running hot. On vintage units we often spot check select capacitors for value and ESR. If the amplifier passes visual inspection, we move on to a controlled power on sequence using a Sencore safety analyzer to monitor current draw in real time. Once the amplifier is determined to be safe to operate, we connect it to full AC mains for function and power testing. We connect the speaker outputs of the amplifier to a Sencore PA81 Power Analyzer which acts as a dummy load, DC offset monitor, and oscilloscope interface. We start with a low level 1KHz test signal at the amplifier’s input and slowly increase its amplitude while monitoring the output on an oscilloscope for signs of noise, clipping, distortion, or improper channel balance. We continue increasing the signal level until the amplifier reaches clipping. At this point we take an output power measurement and compare it to the spec sheet of the amplifier to verify proper performance. If the device under test has both balanced and single ended inputs they are both tested at this time. We finish off the bench evaluation with a 1KHz square wave check and a 20Hz to 20KHz sine sweep to assess the amplifier’s frequency response characteristics. This battery of tests will usually reveal if the amplifier has any issues that need further attention. Before the device leaves the bench, we perform a listening test with actual music using a variety of preferred test tracks. Our benches are outfitted with familiar monitor speakers which help us identify inconsistencies that will not always show up on our test gear. The main things that we are listening for are hum or noise with no signal present, proper center image, clicks, pops, or any other obvious undesirable audio characteristics. If the unit passes all of these tests it is moved to our long term testing rig where we simulate real word operating conditions for 6-8 hours. This allows us to monitor the unit for signs of thermal runaway or intermittent issues that only crop up when the unit has fully come up to temperature." Specs: Solid-state monoblock power amplifier. Rated continuous-power outputs: 150W into 8 ohms (21.8dBW), 300W into 4 ohms (21.8dBW), 600W into 2 ohms (21.8dBW), 1200W into 1 ohm (21.8dBW). Frequency response: 20Hz-20kHz, <0.5% THD. S/N ratio: better than 80dB (ref. 1W), better than 105dB (ref. full output). Input impedance: 100k ohms balanced, 50k ohms unbalanced. Output impedance: <0.05 ohms, 20Hz-20kHz. Damping factor: greater than 800 at 20Hz. Input sensitivity: 130mV for 2.83V output, 1.59V for full-rated output. Voltage gain: 26.8dB. Typical power consumption: 540W ±5% at idle, 210W ±5% in standby. Mains voltages: 100V, 120V, 200V, 210V, 220V, 230V, or 240V AC mains operation at 50 or 60Hz, set at factory. *Please scroll all the way down to view additional images for this listing (click to enlarge). ---------- SkyFi Audio - Curators of Vintage Audio Gear SkyFi Audio is a small startup business specializing in the purchase, reconditioning, and reselling of high end audio equipment. We only buy equipment that we admire and are passionate about. No mid-fi, no gimmicks, no junk. Each piece of equipment is cosmetically restored and fully tested in our well-equipped lab by an engineer with 30+ years of experience in the HiFi world. If it does not meet or exceed the original manufactures specifications, it will not be sold. We are very selective about the equipment we purchase, focusing on mostly analog, high-build quality, American, and European built units. Through our sister company, which is an authorized dealer for McIntosh, Audio Research, Sonus Faber, ClearAudio, Project, and Sony ES, we have access to OEM parts, service, and support. ---------- PURCHASING GUIDELINES: 1) This item will be professionally packaged and insured for safe transit to your home unless you opt for local pickup from our shop. All local pickup items are only wrapped in industrial strength clear stretch wrap if the original manufacturer packaging is unavailable. Local pickup is available in Glen Rock, NJ, just a half hour drive from Midtown Manhattan, with convenient parking near our building. If we don’t have the original manufacture’s packaging, we use heavy duty double-ply corrugated boxes with custom made to your item SealedAir Instapak expanding foam custom inserts. In many cases this has proven to be better than the original packaging! We also use high quality fiber reinforced tape to seal our packages. Lightweight items will be bubble wrapped and shipped in a high-quality box. 2) We do not review or accept any offers that do not go through the official eBay system. We have too many items for sale and it is nearly impossible to keep track of offers outside of the official system. Please do not message, email, or text any offers. 3) All listings are eligible for the eBay Global Shipping Program, unless the item exceeds the maximum weight/price requirements to your country. If this is the case simply message us via eBay as we accept bank wire transfers for international payments and frequently ship worldwide via UPS. 4) Please ensure your shipping address is correct within eBay as we will ONLY ship to the eBay/PayPal Confirmed Shipping Address. No exceptions. 5) eBay may charge and collect sales tax to your state/jurisdiction. Please understand we have no control over this. eBay v1.6 × × × × × × × × × × × × × × × × Tell a friend Visit store Watch now Postage info UPS Ground - $0.00 Local Pickup - $0.00 Click the Postage tab above the listing description for more info Additional delivery notes PICK UP OPTION Our items are available for pick-up. Pick up procedure is as follows: Purchase the item through eBay Email us to coordinate pickup PAYING VIA PAYPAL We accept PayPal on our all our items so you can shop with confidence. Simple choose the PayPal option when proceeding through the checkout. Additional Information No additional information at this time Ask seller a question You might also like Dynavector 10x3 High-Output MC Phono Cartridge Music Reference RM-5 MK II Tube Preamplifier with Phono Music Reference RM-9 Tube Amplifier With EL34's Marantz Model 150 Vintage AM/FM Tuner with Scope Contact To contact our Customer Service Team, simply click the button here and our Customer Service team will be happy to assist. Ask seller a question © SkyFi Audio Postage Click the Postage tab above the listing description for more info Payment Accepted Payment Methods PayPal Returns Returns are not accepted Seller will pay for return shipping. eBay integration by

Price: 13479 USD

Location: Glen Rock, New Jersey

End Time: 2023-10-06T19:52:19.000Z

Shipping Cost: 0 USD