Nevertheless it is a bit disappointing to experience this issue with a device that advertises top-tier objective performance.

Even in active speakers these delays are likely inaudible. It is important to remember that in applications other than active speakers where you need to worry about phase alignment between channels these delays will be completely inconsequential. Soft powering down Okto with remote (I believe this is more of standby mode as Okto remains visible to a computer)Īs I leave the DSP on at all times and only use Pure AES mode I have found that I can compensate for the Okto delays in the DSP and they do not change as long as I do not do any of the actions mentioned above that change delays. The following actions do NOT trigger a change in delay: Switching between Pure AES, Pure USB and USB/AES input modes on Okto Unplugging / re-plugging Okto AES input 1/2 From doing a bit of googling it seems most likely these delays are happening in the XMOS as I came across many similar complaints in the XMOS developers forum.Īs I mentioned above the delays are inconsistent and I have found that they may be changed by the following actions: I've tried running the miniSHARC at both 48 kHz and 96 kHz and have tried other DSPs such the SHD Studio and the nanoDIGI and the Okto has the same behavior with all of them. Typically this is 1 sample ahead of all other channels but the behavior is inconsistent. After doing some more investigation it seems like channels 1 and 2 are always perfectly synced but will always be some amount out of sync relative to other channels. These offsets exactly correspond to a 1-2 sample delay at a 96 kHz sample rate so I figured some channels were being delayed by 1-2 samples by the Okto. At 20 kHz the phase offset was 75 or 150 deg depending on the channel. On loopbacks with no filters applied I noticed differing phase response on many of the outputs. When I first received the Okto I was doing some basic testing with the miniSHARC+Okto with a MOTU M4 to make sure everything was working as expected. The main DSP I have been using is a miniSHARC + DIGI-FP + 4x AES out, see write up on the miniDSP forum at the link below for more info. My primary application is DIY two channel active speakers. Now that I've had a few weeks with the Okto dac8 pro thought it would be good share my experience integrating a few DSPs with the Okto in Pure AES mode as it has NOT been completely straight forward.

What is vb audio hifi cable software