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About Marshall Nack

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So far Marshall Nack has created 32 blog entries.

The CH Precision M1 goes to M1.1: An Improved Statement Amplifier

By | January 18th, 2019|Categories: Positive Feedback|Tags: , |

The old capacitors.

A Parcel Arrives

One day a box of gargantuan capacitors arrived—really heavy industrial cans measuring nearly 7″ high and 3″ in diameter. They were destined to replace the main caps in my CH Precision M1 monoblocks. This was the hardware component of the newly released M1.1 Amplifier mod.

I had been informed about the modification in a pre-release email:

The upgrade consists of changing the main power supply capacitors of the M1 to new special ones. These are huge electrolytic capacitors that act as energy reservoirs for the amplifier boards.Read the full article

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Argento Flow Master Reference Phono Cable Plus a Discovery About Ground Wires

By | January 13th, 2019|Categories: Positive Feedback|Tags: , |

Argento Flow Master Reference Phono Cable

Rounding third and heading for home, the fourth (and I hope final) contender in my phono cable shootout has arrived. By no means exhaustive, this mini survey involves only those on my short list, with the added qualification that the winner had to be worthy of “the bomb,” as Bill Parish of GTT Audio refers to my Kronos Sparta turntable/Air Tight Opus cartridge front-end.

Argento Flow Master Reference Phono Cable

The Stage III Analord Master Phono Cable

It was a sad day for me when Aaudio Imports’ generous long-term loan of the Stage III Analord Master Phono Cable ended.… Read the full article

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Improved Digital Conversion the CH Precision HD Upgrade

By | November 13th, 2018|Categories: Positive Feedback|Tags: , , |

CH Precision HD Upgrade

What’s New?

I’ve calculated that every time I leave my apartment, it costs me $50 on average. In an odd way, that makes me feel patriotic, like I’m doing my bit to keep the consumer economy humming. Doesn’t it make me a good citizen?

It was late summer and the doldrums had set in, so I went perambulating this time in virtual space, where I gravitate to audio related sites. I opened the CH Precision website, clicked on the NEWS tab…Holy cow, what is all this stuff that nobody told me about?… Read the full article

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Indra and Sakra Interconnects from STEALTH Audio

By | September 30th, 2018|Categories: Positive Feedback|Tags: , |

Indra and Sakra Interconnects from STEALTH Audio

Indra Redux

Back in the Precambrian Era of audio (circa 2003), STEALTH Audio introduced an interconnect that disrupted the cable industry. The Indra had many ground-breaking features, not least its MSRP of $5750/meter, a startling number at the time. (Little did we know what was to come on that front.)

But one element in particular catapulted the wire out of the quotidian into the realm of sci-fi. The conductors were said to be made of a mysterious amorphous media developed by the Russian aerospace industry at frightful expense, and rumored to be in limited supply.… Read the full article

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Argento Audio Flow Phono Cable – Escape to the Old World

By | September 1st, 2018|Categories: Positive Feedback|Tags: , |

Argento Audio Flow Phono Cable

Now that the 2018 classical concert season has drawn to a close, I’d like to share a few of my most contentious observations: 1) the best European orchestras maintain an edge over those from the New World; 2) there are some surpassingly fine ensembles among the next-gen of string quartets; and 3) something must be done to stop the intrusion of cell phones.

The observation regarding the string quartets is international in scope, if not universal in practice. As exhibit A, I refer you to the Danish String Quartet (Denmark), the Quatuor Ébène (France), and the Dover and Calidore (both United States).… Read the full article

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A Day with Louis Desjardins of Kronos Audio

By | August 14th, 2018|Categories: Positive Feedback|Tags: , |

Ah, Montreal

We finally made it! An excursion to Kronos Audio in Montreal had been planned last year, but, due to one thing or another, it never happened. Lynn and I were again vacationing nearby, attending the Ottawa Chamberfest (13 years and counting!). One full day is always given to “New Music Now” programming. This is something you need only attend once. We needed to skip town, and so I proposed another attempt at the outing.

As the date approached, however, events began to conspire against us a second time: loose, unconfirmed travel plans; a very inconvenient “no service” message on my cellphone; and the third attendee having to cancel the day before due to an unexpected business commitment.… Read the full article

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Stage III Concepts Proteus Power Cable

By | July 21st, 2018|Categories: Positive Feedback|Tags: , |

Stage III Concepts Proteus Power Cable

“It doesn’t look like it could change shape,” Joseph observed after a long pause to process the behemoth power cable resting on my carpet. That would be the Proteus, the latest from Stage III Concepts, the audio wire manufacturer.

Proteus was an ancient Greek sea god capable of assuming different forms.

Yeah, it definitely looks intimidating. I knew an extra hand would be needed and asked him to assist. It was obvious that it was not going straight in. The Proteus IEC needed to rotate 90° to line up with the receiving jack on the HB PowerStar Horizon AC distributor.… Read the full article

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STEALTH Audio Helios Phono Cable – Analog Dreams of Noise-Free Vinyl

By | June 4th, 2018|Categories: Positive Feedback|Tags: , |

STEALTH Audio Helios Phono Cable

Saturday mornings I’m at the Greenmarket early and later I make my way over to Academy Records, my favorite music retailer. While perusing the bins recently, I stumbled upon Jazz Ballets from Broadway, an early stereo LP from 1958 (Warner Bros BS 1240). The title won’t ring a bell for many people, but it was a big deal at the time according to the liner notes. Jerome Robbins had a runaway hit modern dance extravaganza on the Great White Way, entitled “Ballets U.S.A.” A section of the score entitled N.Y.Read the full article

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Argento Flow Master Reference Power Cord Utterly Natural Sound

By | April 28th, 2018|Categories: Positive Feedback|Tags: , |

Argento Flow Master Reference Power Cord

You know how one thing leads to another. Since I am a huge fan of CH Precision, having acquired a whole system of their components, when I found out they market audio cables, I soon reviewed their Reference line (HERE). Once again, I was taken and acquired the demo set. Turns out the CH cables are actually sourced from Argento Audio. So I followed the bouncing ball and contacted Argento, figuring their own brand of cables would be worth checking out.… Read the full article

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YG Acoustics Sonja 2 Tweeter Upgrade

By | March 1st, 2018|Categories: Positive Feedback|Tags: , |

YG Acoustics Sonja 2

The missing tweeter

I’ve had the same pair of YG Anat speakers going on seven years. That’s the longest I’ve owned any reference component by far. And still the Anats’ give no cause to go out looking. They do everything well. If I notice a performance shortfall, it won’t be the speakers I’m looking at.

Along the way there have been technical upgrades, like replacing the WBT binding posts with custom, in-house posts. But I do have a minor quibble about the tweeters.… Read the full article

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