SteinMusic Harmonizer H2 System

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Add Blue Suns: System Only
Choose a Harmonizer Color: Black
Stands or Wall Brackets?: I'll take the Stands

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SteinMusic Harmonizer H2 System

Our Favorite Tweak


  • Inner Audiio Magazine reviwes the Signature Harmonizer System
  • Wojciech Pacula, HARMONIZER SYSTEM H2 BLUE SUN | BLUE DIAMONDS, Feb 2015High Fidelity
  • Mike Silverton,SteinMusic's H2 Harmonizers, Magic Stones and Magic Diamonds. Call This an Unqualified Rave, StereoTimes, Dec 2011.
  • Dave Clark,Audio Ramblings - The Stein Music Harmonizers, Stones, and Diamonds, Positive-Feedback OnLine, June/July 2012.
  • Big E,Room For Harmony! Stein Music H2 Harmoniser, Magic Stones & Magic Diamonds, HiFi Unlimited, Jan 5th 2012.
  • Clement Perry,Steinmusic's H2 Harmonizer, Magic Stones and E-Pads, StereoTimes.

Redesigned and restyled for better performance & Aesthetics

"So what do I hear with the Harmonizers? With a setup comprised of two H2A and two H2B Harmonizers (all running on batteries and mounted on stands at the suggested positions within the room) and the appropriate set of Magic Stones and four Blue Diamonds (also placed at the suggested locations within the roomâ approximately $5k for complete setup as used here)‚Ķ simply put, not morethereness, but a startling sense ofhereness. One is not so muchtransportedto where the music was (atherenesslike you arethere), but the music is placedhereout into the room‚Ķ it is nowherewith you. The room, for me at least and the many who have visited and heard this, is simply removed from the equation."Dave Clark, Positive Feedback Online

Steinmusic Harmonizers

Now available in Black or White, the new Steinmusic Harmonizer system has had the internal modules redesigned for an even smoother tone and a better distribution of their effect. The Harmonizers are now powered solely by 4x AA batteries each. This offers years of performance, and no more noisy wall wart power supplies.

The new package consists of

  • 1x Harmonizer type A
  • 1x Harmonizer type B
  • 2x wall brackets OR 2 Stands
  • 2x Black Stones

The New Stands

The stands have been completely redesigned, using a 12 mm round polished metal bar and a black lacquered 20mm MDF base with rubber feet that work with any floor. The Harmonizers mount directly to the stands via a threaded insert and screw.

Holger Stein explains the Steinmusic Harmonizer System

What you will hear

The SteinMusic Harmonizer System offers the most performance and flexibility in room treatment. Expect sweeter highs, and more significant sense of bloom around instruments. More decay and shimmer too. Your system will sound freer, faster and clearer. TweekGeek offers in-home auditions of the SteinMusic Harmonizer system.

Enhancements to the Harmonizer Package

Steinmusic Blue SunsThere are several products from Steinmusic, like Blue Suns and Blue Diamonds, that offer significant enhancement to the Harmonizer package. When strategically placed on loudspeakers and about the listening room, they act like “repeaters". Intensifying the effectiveness of the Harmonizers. Both the Blue Suns and Blue Diamonds are similar to the Black Stones that come in the Harmonizer Package, but they are exponentially more powerful. Adding these to your Harmonizer system will bring another level of transparency, smoothness and 3d holography that really must be heard to be believed.

steinmusic h2 harmonizer packageSteinMusic Harmonizer Reviews

Dave Clark's Positive Feedback Review of the Harmonizers

Wayne Donneleys' Enjoy the Music Review of the SteinMusic Platinum System

Mike Silverton of Stereotimes reports:

"Normally, I'd dismiss them as yet more silliness from our community's Cloud Nine Variety Shoppe. That's normally. There's nothing normal - or dismissible - about these SteinMusic products."

"The soundfield becomes more lifelike and therefore more engaging. "

"A feeling of energy likewise applies. The sounds are more momentous. Vigor and substance say it as well."

The most important component in your audio system - the room
Most audiophiles will agree that the room plays a very important part in the overall performance of your audio system. But many of us, while spending tens of thousands of dollars on gear, tend to neglect properly treating the room that the gear is placed in. The SteinMusic Harmonizers are part of a room treatment system that attacks the problem of room acoustics in a rather unconventional way. In my opinion, they do not totally negate the need for conventional treatments, rather, they enhance certain postitive musical characteristics and work well with other types of acoustical treatments.

"...All in all the results were subtle but powerful if that makes any sense. The Harmonizer system seemed to relax the environment in which I was listening, and/or relaxed me, so that the the hifi was more resonant and defined/clear and I was able to listen better - it became hard to stop listening.

Another welcome effect was the softening of digital glare. I am listening to digital files over here and away from my turntable and lps. I was about to buy another turntable and lps for this location, but with the Stein system the digital seems to approach analogue (still not analogue, but significantly less irksome).

Many thanks for the audition. It's going to be interesting to see how much I miss the gear and what I'll need to order to get back some/all of the magic..." Doug, Customer & Auditioner

SteinMusic Harmonizers - Physical Description

The Steinmusic Harmonizers are 5 x 5 x 4 inch piano black cubes that are powered by 4 x AA batteries. On the back of each Harmonizer, there is a power switch, a switch to power on/off the blue LED on the front of the unit and an Intensity knob.

There are two types of Harmonizers, the H2A, and the H2B. Each serves its own purpose within the complete Harmonizer system.

The H2A and H2B are meant to work in conjunction with the SteinMusic Magic Stones, BlackDiamonds, Blue Diamonds or Blue Sunsas a system. The Stones are passive devices, meant to be placed around the room to "resonate" or reinforce what the Harmonizers are doing.

What they do
The PDF Steinmusic manual for the Harmonizers describes their function as "elongating the air molecules" - i.e. "charging" the air in the listening room in a manner that facilitates the transmission of musical energy through the room more efficiently. It seems to be suggesting that this charging of the air molecules means that when the speaker output enters the listening room space it does not have to overcome the inertia of uncharged/un-elongated air in the room.