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One Good Ear does not sell directly to the public/end users; however, if you see a product that you would like more information on or wish to purchase, we will help you find the best audio resellers to deal with for that particular product.
COMPUTER AUDIO DESIGN (CAD)
GROUND CONTROL GC1.1
"The best hi-fi of 2023’ is a collection of products that audiophile webzine The Ear’s reviewers consider to be the very finest they’ve enjoyed over the year. Among them is Computer Audio Design’s (CAD) GC 1.1 Ground Control unit, “an essential audition for anyone with a half-decent system”. But, buyer beware: once you’ve heard how yo
"The best hi-fi of 2023’ is a collection of products that audiophile webzine The Ear’s reviewers consider to be the very finest they’ve enjoyed over the year. Among them is Computer Audio Design’s (CAD) GC 1.1 Ground Control unit, “an essential audition for anyone with a half-decent system”. But, buyer beware: once you’ve heard how your system sounds without the detrimental effects of high-frequency noise, there may be no going back!"
https://the-ear.net/review-hardware/best-hi-fi-of-2023/
The CAD Ground Controls Less noise. More Music.
GROUND CONTROL GC3.1
"The CAD Ground Control units are demonstrably effective, neat and easy to work with. They will significantly improve just about any serious system, but their real beauty is that the more compromised the AC and grounding installation, the greater the potential improvement they represent. I consider them indispensable."
-Roy Gregory "THE A
"The CAD Ground Control units are demonstrably effective, neat and easy to work with. They will significantly improve just about any serious system, but their real beauty is that the more compromised the AC and grounding installation, the greater the potential improvement they represent. I consider them indispensable."
-Roy Gregory "THE AUDIO BEAT"
https://www.computeraudiodesign.com/The_Audio_Beat_GC_Review_LR.pdf
GROUND CONTROL GC-R
"...Listening to the effect of the CAD devices prompted thoughts of David Bowie singing, “Ground Control to Major Tom/You’ve made the grade.” Upon inserting the CAD into your system, you may well feel the same way."
-Jacob Heilbrunn "The Abso!ute Sound"
https://www.theabsolutesound.com/articles/cad-gc1-1-and-gc-r-reference-ground-control/
USB CONTROL
“Sounds had more purpose and musical intent, and there was a sense of snap and drive to the musical performance.”
“Yes, they help bring out detail that might be hiding below the noise floor, and yes they help make the soundstage seem larger and more open. They even make the sound more dynamic and expressive. But more significantly, they
“Sounds had more purpose and musical intent, and there was a sense of snap and drive to the musical performance.”
“Yes, they help bring out detail that might be hiding below the noise floor, and yes they help make the soundstage seem larger and more open. They even make the sound more dynamic and expressive. But more significantly, they tie the sound together like it was meant to sound.”
“Once again, the USB Control devices improve the system’s ability to convey musical themes and improve the overall communication between musician and listener.”
https://www.computeraudiodesign.com/wp-content/uploads/2024/04/hi-fiUSB_Control_2024.pdf
USB IN-LINE FILTER
Digital audio source components – from servers to streamers, CD transports to laptops, are real noise polluters in an audio system. Their CPUs, chipsets, switch mode power supplies, regulators and the like produce considerably more high frequency ‘noise’ than any analogue component. To stop this unwanted noise from degrading your syst
Digital audio source components – from servers to streamers, CD transports to laptops, are real noise polluters in an audio system. Their CPUs, chipsets, switch mode power supplies, regulators and the like produce considerably more high frequency ‘noise’ than any analogue component. To stop this unwanted noise from degrading your system’s overall performance, you need to tackle it before it reaches the analogue stage.
The CAD USB filter is designed to filter out this noise from digital music sources before that noise can reach the digital to analogue converter (DAC).
The CAD USB Filter simply plugs directly into a DAC/Streamer USB audio input and can be used with any USB cable.
The USB Filter is a B end filter: with one female and one male B-type connector. This places the filter as close as possible to the DAC/Streamer.
The CAD USB Filter delivers similar characteristics as the CAD USB II-R cable, offering more clarity across all frequencies, larger soundstage with greater speed, and improved timing and rhythm.
USB II-R CABLE
The CAD USB II-R Cable was awarded the USB Cable of 2023 by HiFi+ Magazine! Read here: HiFi+ Awards
"The USB II-R is now the cable that can preserve the most authentic account of the music so far, acting almost like an analogue conduit from PC to DAC. Against any known contender, this winner takes them all."
The CAD USB II-R Cable was awarded the USB Cable of 2023 by HiFi+ Magazine! Read here: HiFi+ Awards
"The USB II-R is now the cable that can preserve the most authentic account of the music so far, acting almost like an analogue conduit from PC to DAC. Against any known contender, this winner takes them all."
https://www.computeraudiodesign.com/wp-content/uploads/2023/03/HiFi_CAD_USB_II-R_Cable.pdf
“I made a number of comparisons with reference cables and came to the conclusion that CAD USB II-R is one of the most natural and effortless digital connections available to the streaming enthusiast”
Jason Kennedy – Editor, The Ear – June 2023
https://the-ear.net/review-hardware/cad-drops-the-noise-with-usb-ii-r/
ETHERNET CONTROL(CAT-7)
The CAD Ethernet Control is designed to reduce unwanted high frequency noise on the Ethernet Network connection in audio and video equipment and will work with both streaming services (Spotify, TIDAL, Qobuz, etc.) and locally stored music files.
1543 MKIII DAC
1543 MKIII DAC
The 1543 MKII DAC is optimized to work with a computer or audio server. There is one USB input and one set of unbalanced RCA outputs.
The 1543 MKII DAC is “Plug & Play” and will work with almost any audio server on the market, including: Innuos, Auralic, Melco, Aurender, Antipodes and Fidata.
- DAC chips are isolated from the USB input
- Async
The 1543 MKII DAC is optimized to work with a computer or audio server. There is one USB input and one set of unbalanced RCA outputs.
The 1543 MKII DAC is “Plug & Play” and will work with almost any audio server on the market, including: Innuos, Auralic, Melco, Aurender, Antipodes and Fidata.
- DAC chips are isolated from the USB input
- Asynchronous USB input
With a normal USB (either synchronous or adaptive) input the data is sent by the computer using the computer’s clock. The DAC must extract the data when the computer sends it. A serious issue with this process relates to a type of digital distortion called jitter. Computers have high amounts of jitter and we believe jitter is a major cause of poor sound quality.
With Asynchronous USB input the DAC receives the data from the computer and then using its own clocks the data is sent on to the next stage in the DAC .
We use custom fixed frequency oscillators in our DAC. We supply these oscillators with power supplies that we have developed to achieve the best sound quality possible.
UBSOUND
UBSound F85
Celebrating the Italian manufacturer’s thirteenth anniversary with an entirely handcrafted model: the F85!
A distinctive feature of the UBSound F85 loudspeaker is that it uses only one full-range driver. This naturally eliminates the need for a complete crossover. After all, every component that is not in the signal path is one less that can add distortion or noise. It was designed with acoustic fidelity in mind and meant to produce exceptionally harmonious sounds.
The UBSound F85 is entirely handcrafted in Italy.
Please note; production time is 10 to 12 weeks.
€30,000/pr.
(as of February 15, 2025; $44,500* CDN/pr.)
*MSRP may fluctuate due to Canadian Dollar $ vs Euros €