The Mark Levinson No. 33H isn’t just an amplifier—it’s a monument to excessive audiophile indulgence. Weighing in at nearly 175 pounds a piece, these “space saving” monoblocks are less “amps” and more “structural reinforcements.” Your back will hate you for buying them, but your ears? Oh, they’ll love you forever.
*Ship in their original boxes mounted to small palettes
- Production
- 1997-2007
- Condition
- 9/10
- Serial No.
- 1574/1575
- Orig. MSRP
- $19,950/pair
- Restoration
- Replaced safety capacitors in both units
- Verified power and distortion readings
- SN1574 151 Watts RMS into 8 Ohms@ 0.014% THD+N
- SN1575 152 Watts RMS into 8 Ohms@ 0.03% THD+N
- Units make slight popping sound from the speakers when powering on and off Same across all 6 amps tested.
- Units come with Operating Manual
- Both units have slight crackling on plastic speaker terminals but work fine
- Mounted to optional Rollers
- Factory 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.
Dimensions: 11" (279mm) W by 18.5" (470mm) H by 22.88" (581mm) D.
Shipping weight: 220 lbs.
- Documentation
Mark Levinson No. 27 Owner's Manual
- Liner Notes
- Class A amplifier design keeps both output stages of the device at constant full power. It's the most linear design with the least amount of distortion – at the expense of efficiency. With both stages are constantly on, heat becomes an issue. The Class B amplifier is designed so that only one of the output stages is on at a time, alternating each half-cycle of the signal (sometimes called Push/Pull). It's not as hot, but isn't as clean, with distortion creeping in as the signal crosses between stages (with one just powering up). A Class A/B signal still alternates, but rather than shutting one stage down completely, it idles. Class A/B leverages the strengths of both designs: more efficiency than Class A, without the crossover distortion of Class B. The Mark Levinson No. 27 employs two Class A/B amplifiers. Perhaps that makes it Class ABAB? Honestly, we prefer ABBA.
- Stock No.
- 8902316261597
The Mark Levinson No. 33H isn’t just an amplifier—it’s a monument to excessive audiophile indulgence. Weighing in at nearly 175 pounds a piece, these “space saving” monoblocks are less “amps” and more “structural reinforcements.” Your back will hate you for buying them, but your ears? Oh, they’ll love you forever.
*Ship in their original boxes mounted to small palettes
Production
1997-2007
Condition
9/10
Serial No.
1574/1575
Orig. MSRP
$19,950/pair
Restoration
- Replaced safety capacitors in both units
- Verified power and distortion readings
- SN1574 151 Watts RMS into 8 Ohms@ 0.014% THD+N
- SN1575 152 Watts RMS into 8 Ohms@ 0.03% THD+N
- Units make slight popping sound from the speakers when powering on and off Same across all 6 amps tested.
- Units come with Operating Manual
- Both units have slight crackling on plastic speaker terminals but work fine
- Mounted to optional Rollers
Factory 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.
Dimensions: 11" (279mm) W by 18.5" (470mm) H by 22.88" (581mm) D.
Shipping weight: 220 lbs.
Documentation
Mark Levinson No. 27 Owner's Manual
Liner Notes
Class A amplifier design keeps both output stages of the device at constant full power. It's the most linear design with the least amount of distortion – at the expense of efficiency. With both stages are constantly on, heat becomes an issue. The Class B amplifier is designed so that only one of the output stages is on at a time, alternating each half-cycle of the signal (sometimes called Push/Pull). It's not as hot, but isn't as clean, with distortion creeping in as the signal crosses between stages (with one just powering up). A Class A/B signal still alternates, but rather than shutting one stage down completely, it idles. Class A/B leverages the strengths of both designs: more efficiency than Class A, without the crossover distortion of Class B. The Mark Levinson No. 27 employs two Class A/B amplifiers. Perhaps that makes it Class ABAB? Honestly, we prefer ABBA.
Stock No.
8902316261597
