Mark Levinson No. 20.6 – High End Stereo Equipment We Buy

Levinson is one of the most dependable brand names when it comes to high-end audio systems. For years the brand has been recognized by audiophiles throughout the world as equipment that delivers clear and consistent quality in music.

What are the specs for the Mark Levinson No. 20.6?

Power output:
100 watts per channel into 8Ω (stereo)
Frequency response:
4Hz to 140kHz
Total harmonic distortion:
26.9 dB
444 x 478 x 209mm

What else to know about the Mark Levinson No. 20.6?

"With the No.23.5 outperforming it, it was obviously time for Madrigal to rethink the No.20.5, the result being the Mark Levinson No.20.6 (footnote 1). The electrical differences between the two amplifiers are all contained on the new AP-5 module, which replaces the AP-4 behind the amplifier's rear panel. Slotting vertically into the mil-spec "Varicon" connectors on the '20.5's motherboard and held secure with new L-brackets, the AP-5 consists of two separate Teflon-dielectric printed-circuit boards attached to a full-depth heatsink and occupies virtually all the available chassis space. (A new insulating screen has to be attached to the rear of the RP-3 regulator pcb, which sits in front of the AP-5, to avoid inadvertent short-circuits.)

Before performing the upgrade on Stereophile's No.20.5s, I spent a weekend using them to drive the WATTs/Puppies via MIT's MH-750 Shotgun Terminator speaker cable (footnote 2). After using the Audio Research Classic 120s for a couple of months, I'd forgotten the awesome authority of the 20.5's low frequencies, which quite bely its 100W rating. At the start of "The Rhythm of the Heat" on Peter Gabriel's eponymous 1982 album, following the Ekome Dance Company's drum intro, there is a stupendous, spacey bass transient that rarely is as stupendous or spacious as I suspect it should be—unless you use the Levinson monoblocks, when it literally throws you back in your chair, gasping for breath, your flight reflexes cranked up to ten. But the amp's rather veiled treble was a letdown after the Classic 120's superbly transparent presentation.

I installed the AP-5 boards and let the amplifier bed in for 24 hours. The bias checked out okay after the upgrade, so I put on a spot of music—Barenboim's wonderful new Parsifal—and...

Couple the 20.5's effortless dynamics and bass extension, weight, and control with the soundstaging depth and lack of midrange grain of the ARC 120s, the detail, the transparency, the "You-R-there" presence of the No.23.5, and the musical ease of the real thing, and you'll get some idea of the sheer MAJESTY of this amplifier's sound. Madrigal has regained the gold with the No.20.6, in my opinion, easily the most musically pleasing solid-state amplifier I have ever had the pleasure to use. No.20 and '20.5 owners: You have no choice about what to do next." - Stereophile, Atkinson

Brief History of Mark Levinson

Long mapped-to Binghamton New York – the current headquarters and manufacturing center for Mark Levinson Labs – not many people know the brand was originally launched outside of the Nation’s Capital in Silver Spring Maryland, in 1949. In 1956, the brand built their original facility in New York, according to the official brand website.

Other Mark Levinson Products We Often Buy

StereoBuyers has purchased tens of thousands worth Mark Levinson brand equipment since 2014, with individual buys ranging from $100 to well over $50,000. If you are moving, ready to upgrade, or have Mark Levinson equipment you do not or will not be using, why not contact us today to find out if it is worth good money?

If you are interested in selling your used Mark Levinson equipment to us in the greater NYC area or Colorado, please click here to fill out a Free Quote Form and we will get back to you. If we agree on terms, we come to meet you where you want, and pay cash.

The following images show actual Mark Levinson equipment purchased by StereoBuyers.