exaU2I - Multi-Channel Asynchronous USB to I2S Interface

[Telstar]

Originally Posted by Telstar

The audio router application that exa recommends costs 50$ and it's limited to 192khz. The biggest advantage of exa2ui for me is the higher samplerate it supports.

I'm having doubts that it allows the full 352khz (I think i saw a picture): what's the truth?

[exa065]

Originally Posted by Telstar

I'm having doubts that it allows the full 352khz (I think i saw a picture): what's the truth?

Can you point me to this picture? This would be a real untruth - to photoshop a screenshot...

The only place where we discuss the integration of Virtual Audio Cable (VAC) with the exaSound Dashboard is here: exaU2I DB - Installation and Configuration of Native Windows and ASIO Drivers.

The dashboard can be configured for all sampling rates up to 32bit/384 kHz, but VAC is limited to 24bit/192 kHz. VAC offers compatibility for players that have no ASIO suport, but the sound quality is not the same.

I explained this many times. This is how it all happened. We were DIYing our own audio systems and we felt something is not right. It was obvious to us that a turntable with a classic class A amplifier delivers better sound than the latest ultra-super surround receiver. So we questioned the last 20 years of progress in the audio world, and we started building a digital audio platform from scratch. We knew that every piece of the puzzle matters. Instead of optimizing the various complicated elements in the signal processing chain (like KS), we bypassed them. The disadvantage of this approach is that exaU2I is incompatible with the Windows sound system - we don't have WDM drivers.

If you are interested to experiment with exaU2I, you need to be open-minded and to try the configuration that we recommend - ASIO with J River of Foobar.

Regards,

exa065

[Telstar]

Originally Posted by exa065

Can you point me to this picture? This would be a real untruth - to photoshop a screenshot...

It was in this thread, around pg50 or so... A foobar screenshot, but probably must have been in ASIO.

If you are interested to experiment with exaU2I, you need to be open-minded and to try the configuration that we recommend - ASIO with J River of Foobar.

Neither software offers a decentupsampler. But for comparison, i'll use ASIO and a native highres file.

[exa065]

Can you use an offline upsampler for the test?

[Telstar]

Originally Posted by exa065

Can you use an offline upsampler for the test?

Yes, I have a friend who has Saracon. Things like sox (unless u load there a SOTA algorytm but i dont have the filter) and r8brain produce utter crap.

I just finished catching up all past posts. Do you have any update on the ETA of v2 of exa2ui? 2ch optimized version, with better oscillators and placements for external PSUs for the clocks particularly.
it'll take about 1 month for me to work on the waveIO and then i can use the same external PSUs on the exa. There i can also test isolating usb vs isolating the i2s output (which is done similarly with the same AD chip).

barrows whishlist for exa v2 also matches my ideas.

[greggp]

Originally Posted by Telstar

The audio router application that exa recommends costs 50$ and it's limited to 192khz. The biggest advantage of exa2ui for me is the higher samplerate it supports.

I can live with a limit of 192KHz for watching movies/TV with Windows Media Center and all the other non ASIO supporting applications. I've never seen/heard any movies or videos with sample rates higher than 192KHz. My apps that do play higher samplerate audio, also support ASIO.

[Bunpei]

Originally Posted by Bunpei

I could play DSD256 and DSD512 audio sources with the combination of ExaU2I and TPA Buffalo II. It's amazing!

In addition to the usual 44.1 kHz series DSD sources; DSD64(2.8MHz), DSD128(5.6MHz), DSD256(11.2MHz) & DSD512(22.5MHz), I could play DSD sources of 48 kHz series; DSD64(3.1MHz), DSD128(6.1MHz) & DSD256(12.3MHz) with the combination of ExaU2I and Fidelix CAPRICE (a Japanese ES9018-based DAC) using "synchronous master clocking method".

The exaSound "LoTech Player" accepts and plays those 48 kHz series DSD(DFF) files without any problem and the ExaU2I switches DSD clock frequency automatically. I'd like to admire the author of the program!

Bunpei

[preproman]

Will you guys design a WASPI Event Style driver for Windows?

[preproman]

I'm currently getting a Buffalo III DAC built. My builder is trying to figure out the best way to mount the board to the back panel of the enclosure. Do you have any ideas?

[exa065]

The board is designed to be attached to the bottom of the enclosure. Of course you can use angle brackets to attach it to the rear panel.