Mark Levinson No. 33H Solid-State Monoblock Amplifiers
Best high-end monoblocks for serious audiophiles seeking refined, powerful sound.
Experience unparalleled audio performance with the Mark Levinson No. 33H Monoblock Amplifiers. Building on the legacy of the flagship No. 33, these amplifiers deliver a delicate, detailed, yet powerful sound. Each unit boasts an impressive 150W per channel into 8 Ohms, ideal for high-efficiency speakers. Featuring a massive 1/4 Farad capacitance and an AC regeneration system, these amplifiers offer exceptional clarity and control. Despite their robust build, they are designed to be space-efficient, sitting upright for easy placement. Meticulously tested and confirmed to be in perfect working order, these 220V/240V units are ready to elevate your listening experience.
$9999.00
Owner Satisfaction
4.9
/ 5
Category Rank
4
/ 1685
#4 in Power Amplifiers
Price vs Category Average
+21%
Above average
Rated continuous-power outputs
15083004600212001
/ W into ohms, W into ohms, W into ohms, W into ohm
Who it's for
- Audiophiles driving power-hungry, low-impedance reference speakers
- Collectors seeking heirloom-quality components built for longevity
- Purists demanding uncolored, transparent signal reproduction
Who should skip it
- Listeners with limited floor space or fragile equipment racks
- Budget-conscious buyers wary of high long-term maintenance costs
- Homeowners without dedicated electrical circuits or energy efficiency concerns
Performance breakdown
Power Delivery
Massive current reserves effortlessly drive even the most demanding speaker loads.
Sonic Transparency
Delivers an incredibly detailed soundstage with exceptional clarity and dynamic range.
Build Integrity
Heavy-duty construction ensures long-term stability and vibration-free operation.
Control Precision
High damping factor provides absolute authority over low-frequency driver movement.
Thermal Management
Class A operation generates significant heat, requiring ample ventilation for performance.
Placement Versatility
Upright footprint saves floor space despite the substantial 175-pound chassis weight.
Key Specs
Rated continuous-power outputs
150W into 8 ohms, 300W into 4 ohms, 600W into 2 ohms, 1200W into 1 ohm
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
Dimensions (EACH)
11" W by 18.5" H by 22.88" D
Weight
175 lbs each mono amplifier
Features
- Monumental audiophile indulgence for the discerning listener.
- Massive monoblock design for unparalleled power and control.
- Delivers exceptional clarity and dynamic range.
- Built to the highest standards for enduring performance.
- Restored with replaced safety capacitors for reliability.
- Verified power and distortion readings ensure optimal performance.
- Delivers a delicate, detailed, yet powerful sound presentation.
- Unique upright design allows for space-efficient placement.
What customers say
Customers overwhelmingly praise the Mark Levinson No. 33H amplifiers for their reference grade performance and exceptional power delivery. The core theme is sonic authority; these monoblocks drive difficult speakers with complete control and refinement. Users consistently highlight the sound's neutrality and transparency, noting an ability to reveal intricate musical details across a vast soundstage. Build quality is described as exceptionally robust, suggesting a lifetime investment. While the initial cost is high, owners feel these amplifiers represent an end game component, eliminating the need for future upgrades. They establish a benchmark for immersive, high fidelity listening experiences.
Know before you buy
The monoblock architecture provides complete channel separation, which eliminates crosstalk and ensures each amplifier has its own dedicated power supply. This results in superior imaging, soundstage depth, and the ability to drive demanding speakers with absolute control.
These specific units are configured for 220V/240V power environments. Please ensure your local electrical supply matches these requirements before installation.
The AC regeneration system isolates the amplifier from fluctuations and noise in your home's electrical grid. By creating a clean, stable power source internally, it allows the amplifier to deliver a much lower noise floor and greater sonic purity.
Yes, the No. 33H is exceptionally robust and capable of driving loads down to 1 ohm. It is rated to double its power output as the impedance halves, providing 150W at 8 ohms all the way up to 1200W at 1 ohm.
Each unit weighs 175 pounds, so you will need a sturdy, dedicated amplifier stand or a reinforced floor surface. While their upright design is space-efficient, their significant weight and heat output require careful placement with adequate ventilation.
These amplifiers have been meticulously restored with replaced safety capacitors to ensure long-term reliability. Additionally, they have undergone rigorous testing to verify power output and distortion levels meet the original factory specifications.
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