Major EXOGAL Comet/Ion problems


Five years ago I bought an Exogal Comet to use as a DAC with my Rogue Medusa amplifier. It proved itself an excellent unit in all respects and I was positively impressed with the company's support and helpfulness. A year ago I bought the matching Exogal Ion amplifier (at considerable expense) to go with the Comet and was delighted. (The Medusa was wonderful but I wanted something with a smaller footprint). 

Reviewers have invariably criticized the Comet's diminutive window for being extremely difficult to read and the cheapness of the remote control. Noting these deficiencies, the TAS reviewer Vade Forrester (June 24, 2015) wrote, "I learned the Comet is really intended to be operated remotely from an iPhone or iTouch." My experience was that the window and remote were exercises in frustration, but that the Apple application I downloaded from the Exogal site for my iPad was ideal; I had total control over the unit and the app was a delight to use--very Space Age. For the record, I liked the Comet so much I unloaded my Rogue RP 1 and used it as a preamp. 

All was well until I got a new iPad and couldn't download the application. When I called Exogal I received a somewhat garbled account that Apple was no longer permitting them to use the application. Ditto with Android. After a while they announced a remote control module was being developed and in the pipeline. They sent me an experimental prototype that in my opinion wasn't much of an improvement over the original. On the few occasions I can reach them they say it will be ready in a week but weeks have passed. This is tantamount to having a fancy TV where it is a major struggle to perform a simple action like change the channels! 

Exogal is singularly uncommunicative about this problem. Their website is scarcely used and they seem to have moved over to Facebook. The strangest thing is that on the website they list under "Products" a series of four Vortex streamers, described in detail, that apparently were never manufactured! They don't answer their emails. They say their site has been hacked and various other things. In a rare new posting on their website and Facebook they claim the they have just opened a distributorship in Europe. This raises the question how are the European purchasers going to operate their units? None of this inspires consumer confidence.  

My point here is that when someone spends 7k and above on supposedly elite components they deserve responses and explanations. It is Exogal's responsibility to ascertain that these units are operable as designed. I have to question the business sense of relying on an outside entity like Apple that is notorious for being proprietary. It is totally unbusinesslike not to make a public explanation of these issues with a timetable to correct them. Customers should not have to go foraging around Audigon forums to learn what is, or isn't, happening. 

Now the window on the Comet periodically goes blank (it was never even illuminated). Having 7k worth of Exogal equipment that is extremely difficult to operate, I went and bought a Wyred 4 Sound integrated and a Black Ice DAC so I can actually listen to something without a struggle. The Exogal stuff is in a box waiting for who knows what. I am beginning to think that Exogal is indeed out of this galaxy, but for all the wrong reasons. This is very surprising because a couple of years ago they were exemplary in all respects. I would like to hear from other frustrated owners to see what solutions they have devised. 
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I am sympathetic but they need to step forward and let people know what is happening. Being evasive and hoping the problems will go away is not helpful. They are saying they have a European distributer which indicates that possibly the remote module is out. Otherwise you would have to be crazy to buy the brand. 
I still really enjoy my Exogal Comet and have no plans to change, but, I agree with other users frustration of no longer having the iOS or Android app. I recently discussed this with Exogal and they sent me a prototype version of their RF remote and RF receiver called the Pulsar and it is a functionally adequate solution to their challenges of maintaining and distributing an app in the Apple and Google App Stores, but, it not as convenient and elegant as the original app-based approach. It seems like a complicated technical solution for what I believe is a simple business problem. The last thing I wanted was yet another remote.
I have to say that for this outlay of money  we should have something better than functionally adequate, to use your characterization. Also, I was part of the same trial and I did not feel the remote replacement worked very well. This product is, was, application based as the designers openly stated in their own advertising and as they were themselves quoted in reviews. No application means pretty close to unusable product.
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I have a number of Wadia DACs and based on the great sound qualities i have recently acquired the Exogal Comet. The unit is a Plus version with enhanced linear power supply but doesn’t come with a remote.

I didn’t thought it was an issue initially because there are IOS and Android apps to support phone control of the Exogal Comet functionality.

Unfortunately the IOS version is no longer available from Apple Store and the Android version doesn’t really work as it can’t find the unit after installation.

This becomes a challenge because i plan to use multiple DACs in an active 3-way digital crossover setup. And being able to adjust the volume is essential.

Luckily I noticed that there is a 5v TTL serial communication port on the Comet.

I wrote to the CEO of Exogal requesting for the serial communication specifications and Jeff was very kind to sent me this information.

 

I managed to write a C# communication program in .NET to map all the functionalities of the remote control to the equivalent commands via the serial interface. I managed to gain full control of the Comet DAC.

I have tested this and is working just fine.

So for those of you out there experiencing difficulties in communicating with the Comet, i highly recommend getting a FTDI  5v TTL serial to USB cable from Aliexpress and give this approach a try.

 

This is the cable recommended by Exogal for serial interface :

 

AU $11.13 10%OFF | USB to TTL Serial Adapter Converter Cable FTDI Chip 5V TTL UART 6ft to 3.5mm Audio Jack Plug Stereo Cable TTL-232R-5v-AJ
https://a.aliexpress.com/_mP1Tjzu

 

To provide a nice user interface, I obtained an image of the remote control, upscaled this image using AI imaging based on Fractal geometry for enhanced details. This allows me to capture the image for each control button so that i can map these to the C# GUI buttons to program a touch screen GUI interface to work as a remote control for the Exogal Comet 🤩👍

 

With this small enhancement to restore the UI, the Exogal Comet is once again a very nice choice for those of you looking for a ultra high resolution DAC with a very analog sound. The Calculus design really works magic even compared to the Wadia DigiMaster... it is definitely a step ahead. 😬👍