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Larry Greenhill Posted: Jan 16, 2012 1 comments
The $25,000, 500W Mark Levinson No.53 digital-switching reference monoblock amplifier made its regular non-playing appearance at CES 2012 but this time with an illuminated cutaway display, allowing its lead design engineer, Mark Seiber, to walk me through its circuitry. The transparent panel, which the display used in place of heatsinks allowed me to easily see the No.53's four major subsections (analog input stage, modulation, amplifier output stage with its eight air-core inductors, and power supply section, which is at the bottom of the chassis.
Larry Greenhill Posted: Aug 19, 2011 1 comments
"Larry, you have too many amplifiers!" exclaimed John Atkinson during a recent visit. This surprised me—I didn't think it was possible to have too many amps. While I'm not going to open an amp museum, I do have a starter collection of Mark Levinson amplifiers from different eras. This either makes me exactly the right or the wrong person to size up Mark Levinson's new No.532H.
Larry Greenhill Posted: Nov 25, 2015 2 comments
In July 2000, I reviewed the Mark Levinson company's first integrated amplifier, the No.383, and found that its sound had "clarity, transparency, liquid mids and highs, with dynamic contrasts." Also evident were the No.383's power-output limitations, the result of building large power supplies and heatsinks into a single case that had to fulfill multiple functions. Still, the No.383's price of $5900 was much less than the total cost of the equivalent in Mark Levinson separates. Later, in April 2007, I reviewed a similarly powered integrated amplifier, Bryston's B100-DA ($3195), which included a built-in DAC.
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Larry Greenhill Posted: Jan 11, 2017 0 comments
CES 2017 saw the introduction of the 350Wpc Mark Levinson No.534 stereo amplifier ($20,000). Todd Eichenbaum, Director of Engineering for Harman International's Luxury Audio Group and designer of the No.534, explained that it was developed to fit between Levinson's entry-level No.532H stereo amplifier ($8000) and the $50,000/pair No.53 reference monoblock amplifiers.
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Larry Greenhill Posted: Jan 11, 2017 1 comments
The No.523 features six line-level inputs, a phono preamplifier, and a headphone amplifier (there's a 1/4" jack on the preamp's front panel)…
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Larry Greenhill Posted: Aug 22, 2004 Published: Aug 01, 2004 1 comments
"You certainly love weird music!" my wife yelled from the kitchen. This just reconfirmed my suspicion that reviewing subwoofers is a lonely job that brings no respect. What's so weird about the droning of Tibetan temple horns accompanied by the chants of Tibetan Gyuto monks, all framed by a powerful synthesizer in Philip Glass's soundtrack to Kundun (CD, Nonesuch 79460-2)? What's so strange about the karate-like cries of the drummers in the Kromata Percussion ensemble as they smash away at their timpani and gongs in Yoshihisa Taira's Hierophonie V (CD, BIS CD-232)? What's so odd about the shuddering majesty of 25Hz notes played by Harry Partch's one-of-a-kind Eroica Marimba, heard on his Delusion of the Fury (LP, Columbia M2 30576)? Why would any spouse object to the primitive, driving synthesizer growls and screams from Morton Subotnick's The Wild Bull (LP, Nonesuch H-71208)?
Larry Greenhill Posted: Jul 12, 2001 0 comments
Electrostatic speakers are my passion. Why else have I put up with their high prices, unreliability, low power handling, tendency to arc, high-frequency beaming, limited bass response, and widely fluctuating impedances?
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Larry Greenhill Posted: Jan 13, 2015 1 comments
The $80,000/pair MartinLogan electrostatic hybrid, the Neolith, played with wonderful spatial imaging and translucent sound. The speaker's enclosure was painted in a glossy, thick automotive glass red paint called Rosso Fuoco, but is available in 6 other colors.
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Larry Greenhill Posted: Jan 11, 2017 1 comments
Jürgen Reis, MBL's lead engineer, was delighted to show me the company's new 560W (into 4 ohms), mono power amplifier, the MBL N15 ($17,800). Slimmer than MBL's reference-line amplifiers, four N15s (for bi-amping) fit into one equipment rack.
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Larry Greenhill Posted: Jan 13, 2013 1 comments
MBL’s Corona Line C-15 class-D monoblock amplifiers ($12,500 each) are rated at 500W into 4 ohms with low distortion, and none of the rising distortion with frequency found in other class-D designs. In addition, the distortion is load independent. This is a result of the circuit design MBL calls a "Linear Analog Switching Amplifier Design” (LASA). MBL designer Jurgen Reis was proud that the amplifier had been designed to meet the stringent South Korean "KT" consumer standard regulations, and "was on the way" to meeting the even more stringent "CCC" Chinese consumer requirements. Although the switching occurs at 300kHz, the amplifier is free of RF emissions up through several MHz because of extensive mu-metal shielding. The amplifier and preamplifier are available in several different cosmetics including a white or black chassis with center section in gold or chassis color. Matching C-11 preamplifier and C31 CD player, with price points are also available.

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