Hi,

I have mixed sample rate & bitrate music (16/44.1, 24/88.2, 24/192) in my archive and I listen them randomly. I use a pro audio interface with ASIO driver and it recognizes the sample rate changes and adjust itself accordingly.

I would like to know if DA-11 performs the sample rate changes automatically (like the ASIO driver) or it must be adjusted manually each time.

I use Foobar2000 as player.

Thanks in advance.

I take it that because you are using a "pro audio interface" the DA11 would be connected using either AES or SPDIF (not that it changes the way the DA11 operates in this regard).

From the DA11 manual:

“If the input is locked, the VOLUME display indicates the sample rate of the input by displaying “44” for 44.1kHz, “48” for 48kHz, “88” for 88.2kHZ, and “96” for 96kHz. The DA11 incorporates an advanced version of the Crystal mode introduced in the DA10- the "autoCrystal mode (tm)" . When the digital audio input of the DA11 is switched or the signal feeding the input is changed, the DA11 automatically checks the incoming sample frequency. If the sample frequency is close enough to the frequencies 44.1, 48, 88.2 or 96 kHz, the control circuitry automatically selects Crystal mode with enhanced jitter rejection. For all other input sample frequencies, a more “standard” PLL mode is employed which allows the DA11 to lock to input signals between 32 and 200 kHz. The DA11 operates in Wide lock mode and displays one of the four sample rates that is closest to the input sample rate. For example; an input that is locked to a valid 32 kHz sample rate would be indicated by a “44” in the VOLUME display. Switching between modes is seamless so that there is no loss of lock or muting when is engaged.
- If the input is not valid or not present, the DA11’s input is not locked and the VOLUME display indicates this by displaying “- -" instead of the numerical sample rate.”

So if you want to check; enter Setting mode and look at the “Volume” display which changes modes to indicate both that the DA11 is receiving a valid signal and the sample rate at which it is operating. In the case of a "24/192" input, the DA11 will indicate "96" when it receives a valid signal and locks to it.

The current DA11 manual is available for download as a PDF document under SUPPORT tab of our website. If you own a Lavry Engineering product, we recommend checking occasionally to see if a version newer than the one you have is available, especially in the first year after a product is released.

Thanks,
Brad Johnson
Lavry Engineering Technical Support

I am using EMU 0404 USB (USB connection to computer) and I want to upgrade to a better DAC. I am not musician and I plan to use DA-11 with an ATC-20 active speakers.

I use Foobar2000 with ASIO driver from EMU. It recognises the different sample rate/bit depth differences and automatically adjusts itself accordingly without up/downsampling.

I would like to know if it is the same with DA-11 using the USB connection. It is not very clear in the manual.

Thanks.

Thanks for the clarification on your plans to use the DA11's USB input.

The DA11 uses the standard Windows or OSX drivers, so even though it does automatically adjust itself to the incoming sample rate regardless of the input used, the source may "automatically" introduce sample rate conversion. This is detailed in the DA11 manual under the "USB INPUT" section.

So the DA11 will always set itself to operate at the incoming sample rate regardless of whether the input is USB, XLR, RCA, or optical. But becasue it is a "downstream device," it cannot control the actions of the computer feeding it beyond identifying itself as a DA converter named "Lavry DA." This tells the computer which driver to use, and causes it to appear in the "SOUND" control panel in a Windows PC or the "AUDIO MIDI SETUP" in an Apple PC running OSX as an output device.

You can also contact me directly at techsupport@lavryengineering.com with specific questions.

Brad Johnson

hi,

just bought a DA11, love it!

regarding sample rate compatibility, from what you said the DA11 accepts 192 signal, but display will only shows 96, will DA11 downstream the 192 signal to 96 before processing or natively processing the 192 signal?

Thanks!

Thanks for the positive feedback!



I believe the term you were looking for when you said "downstream" was actually "downsample." If that is true, then yes, in Wide lock the DA11 does sample rate convert the incoming 192 sample rate signal to a fixed internal frequency before conversion. Our company policy prevents me from being more specific about the exact internal sample frequency that would be utilized in this instance, but it was chosen in a way to provide optimum conversion performance.

If you are interested in more information on why Dan Lavry does not support the notion that sample rates higher than 96kHz offer real improvements in conversion accuracy, please see the white paper available as a PDF download under the SUPPORT tab of our website- "Sampling Theory."

http://www.lavryengineering.com/documen ... Theory.pdf

Brad Johnson
Lavry Engineering Technical Support

Dear Brad,

Thank you very much for your reply.

A very useful article.

rover

Hi Brad ,

As per our email, my DA11 only indicate 44 instead of 96 for those 192K 24b input.

Please could you double confirm the 192K 24b source is down sampled to 96 instead of 44.1K as showed since I heard that feel like 44K source,

The rest of this post has been deleted for violation of forum policy.


Best,
Derek

It has come to our attention that there was an oversight in the DA11 manual regarding the display of sample rates other than 44.1, 48, 88.2, or 96 kHz. If the input sample rate is below ~100 kHz, the display will operate as described in the manual, and display one of these four values that is closest to the input sample frequency: "44" (for 44.1k), "48," "88" (for 88.2k) , or "96."

With inputs in the range of 176.4 to 192 kHz, the DA11 displays "44." This DOES NOT indicate that the DA11 is downsampling the input signal to 44.1kHz before conversion. Inputs in this range are downsampled to a sample frequency no less than 96 kHz.

Brad Johnson
Lavry Engineering Technical Support

Thanks for taking time to help