Name: Mark Levinson No. 27 // Dual Monaural Solid-State Amplifier / Orig. Box
Brand: Mark Levinson
SKU: 7535151153373
Availability: OutOfStock

At first glance, a distinguished amplifier. Linger any longer and you'll see a work of art. The fins of the heatsinks flow with organic precision – at once ordered, yet chaotic – an occasional line unpredictably contoured or skewed as if in an effort to constrain magic within. Yet the true art is the beating heart of this Mark Levinson genius – 100 watts per channel of clean Class AB from two completely separate monaural amplifiers, eager to massage your magnets. Let's go! Those fins aren't gonna heat themselves.

Production

1989

Condition

9/10

Serial No.

1982

Orig. MSRP

$3495

Restoration

Full service check
Cleaned controls, switches, and chassis
Tests perfectly to spec

Factory Specs

Type Solid State Amplifier

Power Output 100WPC RMS @ 8Ω, 200WPC RMS @ 4Ω, 350WPC RMS @ 2Ω

Power Input 1 C14 (female) receptacle

Frequency Response 20Hz to 20kHz

Total Harmonic Distortion (THD) 0.1%

Signal Input 2 x coaxial, 2 x XLR

Input Impedance 50kΩ shunted by 1.5nF

Sensitivity (EIA) 141mV

Voltage Gain 26dB

Power Consumption 175W @ idle, 400W during peak @ 8Ω

Speaker Output 4 x 5-way binding post

Dimensions 17.5"W x 7"H x 18"D

Weight 75 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.