Contact Info

The Upgrade Company

+1 269-352-7609

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 (6) of David J. Schulte's patents




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The Upgrade Company, AudioVisual Equipment  Dealers, Harbor Springs, MI 











Contact Info

The Upgrade Company

+1 269-352-7609

This email address is being protected from spambots. You need JavaScript enabled to view it.

 (5) of David J. Schulte's patents



+ 30 Day In Home 100% Refund Period

+ 5 Year Parts & Labor Warranty with Every Signature Edition Upgrade

+ 100% GUARANTEED to beat ANYTHING else on the market!


Nothing we sell ever comes back.  

We don't even have to advertise.  Once our clients experience for themselves the extreme high performance & "bang for the buck" we deliver, they keep coming back as funds permit.  

The Upgrade Company would not continue to be A+ rated on the nationwide BBB algorithm month after month unless we were delivering on our promises.

Please call +1 269-352-7609 to place order

WADIA Testimonials

Unsolicited Customer Testimonials -Every client has paid The Upgrade Company LLC in full.   No kickbacks, no commissions, no fees of any kind for recommending our products and services.



Please feel to use this testimonial on your website if you so desire.

A few years ago I decided to take the plunge into the 21st century world of iPod audio.   Being an audiophile type, I was concerned with the quality of sound I’d get through my main audio system. To make a long story short, I called my audio ally, Mr. David Schulte, to see if he'd had any suggestions. I’d been working with David for over 4 years at that time starting with my Mark Levinson No. 380S SE upgrade transformation which turned out fantastic, so I trusted his judgment on subsequent purchases.

About 3 years ago David recommended an SE upgraded Wadia 170i iPod dock, combined with an SE upgraded Audio Logic 34MXL tubed DAC he had just finished upgrading with a plethora of high performance parts, MunDorf silver/gold wiring, WBT silver Nextgen connectors, fancy silver XLR connectors, dampening, Black Gate & MunDorf capacitors etc and applying their proprietary shielding/attenuation/dissipation/dampening technologies which are similar to what’s done in the military/space arena to the insides of $30+ million dollar space satellites to block out and dissipate RFI & EMI energies which rob power supplies and kill performance.

I’ve been very pleased with my new found iPod capabilities through the SE upgraded Wadia and Audio Logic combo. Fast forward about two years later, David contacts me about some other equipment I might be interested in, and in passing, mentions that he can significantly improve the performance of my “classic” Audio Logic DAC for under three hundred dollars, their typical “update fee” to bring their older upgrades current with a new guarantee that it will beat anything that has not been SE upgraded by Upgrade Co.

I didn’t know how much improvement The Upgrade Company could pull out of this older unit, but he assured me they could dramatically transform it further due their RFI EMI Riddance technology. I’ve never doubted Upgrade Co, they havn't let me down yet, so I sent in my Audio Logic 34MXL DAC to have more RFI EMI Riddance shielding/dissipation/attenuation installed. I only expected to hear a few little improvements at best, but in true audiophile spirit, I told myself any improvement would be a welcome addition to my system. My big Rockport speakers really show what’s going on upstream in the electronics & cabling.

As usual, David’s people got right on my DAC and had it ready to go in no time. When I received it at my house, I had no idea what I was in for while hooking the DAC back into my system. The improvement in the sound quality was utterly shocking! I’m not someone to be a drama queen when describing audio equipment, but I couldn’t believe the sound quality I was getting from my iPod sourced music stream. There was much more detail and bass slam and top end sparkle, way better soundstage, a much more musical & accurate presentation with no trace of digititus.

 And this was from a $300 update off an iPod source.

I've lugged my SE upgraded electronics to my audio dealer's showroom and I am not missing anything over much more expensive gear.

In summary, The Upgrade Company continues to deliver fantastic value for dollars spent. This is not the first time David Schulte has recommended further upgrades for equipment he’s already SE upgraded for me because as the years have gone by, their RFI/EMI riddance techniques have gotten even better. Each time David has come through on his claims, for a very modest “update” price. You can count me in as a repeat customer after doing nearly 7 years of business with The Upgrade Company.

In my opinion, David Schulte is one of the best technicians and businessmen out there. I’ve thoroughly enjoyed our numerous correspondence and business dealings. I don’t know how David makes time to deal with all his customers on a personal level, but he does a wonderful job of it. I can’t wait for the next opportunity to get another new toy from David’s workshop.


Warren Hingst

U.S. Air Force Major, retired


WADIA 2000 4-box Statement DAC

Dear Upgrade Co, 

I took delivery of the packages this past Saturday, and 
installed the Wadia 2000 Decoding Computer System yesterday in my system. 

It sounds wonderful. I'm very happy to have the unit back 
and in working order. 

Thanks very much for all of your work in locating the required 
parts for the repair and the wonderful Signature Edition upgrade improvements. 

Jim F.
United Nations


Page information last updated: 20/04/2017

Disclaimer: We believe but do not guarantee that the information on this website is correct at the time of publication.

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