Phone: 530.320.1576

Marihart Audio

DBA Audio Experience

Shipping Policy

Shipping and shipping insurance within the continental USA is included in all purchases from this website.  We can ship international, but the receiving party will have to pay for all duties and taxes.  Marihart Audio will make an estimate of the duties and fees and add them onto the international shipping expenses.  Experience has shown that the shipper generally never collects these fees at the receiving end, but from the shipper.  On international shipping there will be an accommodation for the shipping costs within the USA and that will be credited to the international shipping costs.  Thank you for your time.

Consignment Gear Return Policy

For our consignment Gear Return Policy please see the Return and Privacy Page.  Buttons are located on the right side of this page.
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Return Policy, New and Demo Gear

For our return Policy on New and Demo gear please see our Returns and Privacy policy page-button located at right or on the bottom of the page.
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Hours of Operation and Appointment Information

Hours of Operation
We are now open by appointment only, please call at least 24 hours ahead to set up an appointment.  Am open for appointments only Tuesday, Thursday, and Friday, and occasional Saturdays.  Please call first so I can kennel our dogs.

Marihart Audio is located in beautiful Weimar in the Sierra Foothills off I-80.   Phone is 530-320-1576.  Please Call First 24 hours in advance to set up appointments and to get our easy directions.  Thank You

Room Acoustics and You

Room Acoustics are a commonly misunderstood factor in homes, sound systems, even 2 channel systems.  The room is the final determinant of what you hear from any reproduction system.  Yes improving placement of the speakers, even the equipment, can help with the sound, but ultimately the room determines what you hear.  Research has shown that up to 80% of what one hears in music is the room, not the original sound from the speakers or the instruments.  Speakers are some of the worst offenders as the tweeters and drivers tend to spray the sound out of the speaker in a 180 degree pattern-exciting the walls, ceilings, and floors.  All of this sound bounces off these surfaces and winds up at your ear out of phase with the original signal.  FYI-you can detect at your ear a phase difference of 1/3000 of a second at 500-4000 Hz-dead in the midrange where most music exists.  Your ear is very good at discriminating direction and phase as well-so a note bouncing off the ceiling vs. a note directly from the instrument or speaker will not sound “right”.  You can thank our ancestors and their survival skills for our hearing today.  We really do need to know what it is and where it is so we can run from it and not be dinner.  Unfortunately our hearing was developed for open spaces, not rooms.  Hence the sensitivity to phase and direction.
There is also the interpretation of the sound that occurs in the brain.  Ever notice how something sounds weird when you first turn on music then it sounds much better and more melodic a few seconds later?  An excellent example of the brain in motion. The brain builds up a library of sound over your life, and then applies that to what you are hearing on a daily basis.  Notice again how when you hear something new-you concentrate on it-to determine what it is (fight or flight response), then the brain files it for later reference.  When you listen to music all of this comes into play.  Research has shown that we tend to hear that that is familiar, not necessarily what is really being heard.  Also our brain will filter out what is not important for us-this happens daily.
Next time I will talk a bit about room acoustics-the room itself.


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Business Changes

Marihart Audio will be changing from high end audio sales to doing strictly acoustics for the home and business.  Due to weak sales and me just getting tired of trying to compete in a very small market I am calling it quits.  We have already purchased a fair amount of gear for the acoustics business and will be getting some more in for our roving demo.  So as of this moment, the majority of our new and used gear is going on US Audio Mart for sale.  I am also closing down the shopping cart over the next few days so that it and its tabs will disappear from this website.  I will maintain a presence here on the website, and will email my old and new customers of the gear going up for sale before it goes on US Audio Mart.  Thank you everyone who supported the Audio business for the last 8 years-and yes I really am calling it quits this time.

Marihart Audio, PMI Engineering and MSR Acoustics

We are proud to announce that Marihart Audio has become dealers for MSR Acoustics line of products, and has PMI for your more involved acoustical engineering problems.  MSR has a complete lineup of pre-engineered products for your audiophile and home theater needs.  These are engineered for specific range of standard room sizes and are reasonably priced so you can get the most out of your system.  As a dealer I can give recommendations and help choosing the right set for you.
For your more complex room arrangements and home theaters PMI offers engineering solutions and in home consultation to find solutions for your problems and needs.  Literally anything is possible-do you want a home theater that doesn’t look like one-no issue.  Do you want complete room isolation from the rest of the home-no problem.  Both? Again no issue.  Marihart Audio will do the initial meeting and take measurements and pictures.  Later Tony Grimani (one of the top engineers in the USA) or one of his engineers will meet with you to nail down details and finish engineering.  PMI has a host of superb contractors they use for acoustical installation and finish work.  Marihart Audio has a set of pictures I can send you demonstrating these concepts and the quality of the workmanship.
We also help the homeowner with acoustical issues caused by hard surfaces-tile floors, lots of windows, and combinations thereof.  There are solutions out there that help tame excess reverberation in the home that are unobtrusive and very effective.  How we can help can be determined by a free in home appointment  by Marihart Audio.
We look forward to this new phase of our business, and helping people find solutions to their in home issues.
For more info please check out: for acoustical treatments and for the engineering, design, and execution.

Guide to Cable Selection

I am writing this because there is a lot of confusion about cabling and how to put it together.  When you want to upgrade your cabling please do not go the route of replacing one cable at a time.  This puts you into a serious issue of trying to get dissimilar cables and cable companies to play well together.  I have tried this for years with little satisfaction.  And I am not alone in this discovery.  Please get a complete loom (speaker cables, interconnects for all components, and even power cables) from a dealer and try that.  You will get a much better picture of how that brand sounds in your system.  And you may be in for a big surprise in that the lower cost stuff may sound better than using that one really expensive speaker cable or interconnect with your old stuff.  I believe that the reason for this is that the capacitance and inductance of a set of cables from the same manufacturer are very similar, and that all manufacturer’s cabling varies widely on this issue.  The amplifier, preamp, and source equipment are much happier looking at similar capacitance and inductance than widely varying ones (as would happen with different manufacturers).  A good dealer should know what pairings work best within a manufactuer’s products and can make recommendations to fit your budget.  If he doesn’t know-get another dealer-that’s his job.

What is the Sound of No Phase Shift? Notes on the Exemplar eXception

Nov 16, 2013
One problem all designers of high end gear face is that all (with few exceptions) capacitors induce some degree of phase shift in the signal.  This is a major issue when caps are almost always used in the output stages of amplifiers.  This issue has been almost never addressed to my knowledge in the industry (one of its dirty little secrets?).  They have addressed how much latent energy is held by a cap ( see C1 capacitor upgrades-Conrad Johnson), but little on phase shift.  This recently came to my attention through John Tucker of Exemplar because of capacitor phase shift research done in Japan.  The end result was that all poly and teflon caps phase shifted except for one commercial cap made in France.
Enter the Exemplar eXception integrated amp.  A new design by John Tucker-it utilizes these caps and other proprietary technology developed here by John and in Japan to give one phase shift free sound.  I have been listening to it in my system for the last 3 hours-running through its paces-after giving it an all day warm up.  I have never heard an amp that is as neutral, non-existent as this amp.  There is only music-nothing else.  Dynamic, warm, fluid, black background, timbre accurate, doesn’t begin to describe what I hear.  On Copland’s Fanfare for the Common Man (Telarc) the cymbals are fluid yet one can clearly hear the shimmer and metal in the instrument, the brass sounds exactly like brass, the kettles’ skin and wood resonate clearly, all with lots of air and depth.  On Patricia Barber’s What a Shame (Café Blue) she is in the room, the wood in the stand-up bass giving the instrument shape and depth, the guitar’s attack forming in the air in front of me. And on and on.  Perhaps my heavily modified Cary SLI-80 may give it a run-but there is a speed that the eXception has that I know the Cary can’t quite match.
On to Info on this Amp:   50 W/ch both channels driven at 8 ohms, high current solid state outputs with tube preamp, remote, silver aluminum face with 6 inputs, can be custom modified on inputs, comes with mute, and cinema bypass.  Retail is $4950.
Nov 20,2013
Dave Sykes and I auditioned the eXception against a reference system using the Pass Labs XP-30 preamp, XA-100.5 monoblocks, and XP-15 Phonostage, with an Exemplar Audio 93 for CD’s.  Wiring was Zu Audio’s best, and speakers were the Zu Definition Mark IV.  We listened to the Pass gear first, letting the eXception warm up, then put on the eXception.  The results were quite surprising as we both felt that the Exemplar piece quite held its own against the Pass gear.  On some cuts the bass was actually tighter than the Pass, highs were just as defined most of the time, occasionally there was a slight edge on the high brass and violin notes-but still well defined.  Timbre accuracy and harmonics were generally exceptional-not indicative of an integrated costing 1/6 as much as the reference system.  Both had superb depth and air, with a huge soundstage.  Remember, the eXception we had here was a beta test unit, not the production model which has higher resolution and a faster power supply.
As a result, I ordered the eXception and should have it in a couple of weeks.  It is by far a giant slayer-if you want world class sound at a budget price-this is it.  I do recommend using it only on speakers with 90db sensitivity or better.

Announcing Margules Audio

I am proud to announce that Margules Audio of Mexico City is coming to town.  I have looked at this manufacturer for the last 6 years, and have decided to bring in his superb gear.  All gear is made in Mexico City in his own plant, and he even builds his own transformers to very tight specifications.  Build quality is excellent, with an eye to beauty in the presentation, reminiscent of the Italian gear.  Also Margules makes the gear with the idea of future-proofing, so as your needs change so can the equipment be reconfigured.  He also has as part of his warranty a 6 month guarantee that any updates to the unit are free of charge-the only manufacturer I know to do that.
I will be receiving the Stereo Hybrid Integrated Amp ACRH 1.2 next week, and I already have the ADE-24.1, the Analog Digital Enhancer.  The ADE removes 3rd Harmonic distortion common in less expensive DAC’s and CD players.  Result is greatly expanded sound stage with more air and definition in the music.  And NO Digital Grit.  All for $275 retail.  I have this unit for demo now in my shop, and will receive 3 more for stock next week.  See for more info.
The ACRH 1.2 is an integrated amp using a tube (12AU7) line stage and a direct coupled solid state amp.  Results are 100W/ch at 8 ohms, heavily biased toward the class A.  It has a beautiful arched front, and is future proofed.  It has a warm, quick presentation with a good sized soundstage and good depth.  Especially good considering the $2200 price point.  See:
Check here for future additions to the Margules line.  I will most likely bring in some of his superb speakers next.

Marihart Audio, Electronic Equipment & Supplies - Dealers, Colfax, CA