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2 hours ago, GoldenOne said:

Yeah I think it was more a case of the original USB implementation wasn't great, and so people used I2S.

 

So far nobody has shown objective evidence of such. I would be interested to see though.

 

Signalyst - Developer of HQPlayer

Pulse & Fidelity - Software Defined Amplifiers

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50 minutes ago, Miska said:

 

Same as Spring 2, so if you use PCM mode, set DAC Bits 20 and use noise shaper like LNS15 at 1.5 MHz sampling rate. I personally stick to DSD256 output using ASDM7EC modulator.

 

What is the reasoning for those settings? (Other than the dac bits which I understand)
HQplayer is fantastic, and i'm curious to learn about why these settings benefit the spring.

I'd be using a network streamer that only supports 768khz. Would the desired settings other than sample rate differ in that case?
 

 

45 minutes ago, Miska said:

 

So far nobody has shown objective evidence of such. I would be interested to see though.

 

I've not seen any either, just that I'd seen a lot of subjective results that i2s was an improvement.
In any case the usb module has since been upgraded, and the May L2 and above uses a further improved version so I can't imagine there would be issues anymore.

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On 5/30/2020 at 11:37 PM, barrows said:

I know some people like I2S, but it is somewhat flawed in a technical sense vs. USB.  The USB input on the May has been shown through jitter measurements to be very, very good.  I would expect best performance using the USB input via a very, very good Renderer.  Using a Renderer allows your (powerful one needed for HQP of course) computer to be located far from the audio system where things like electrical and RF interference and even fan noise will be of no concern.  I work with Sonore, so of course you know my preference for Renderers!  Regardless, you will want to use a Renderer which has the HQP NAA protocol available.

@barrows Putting aside your Sonore connection, what is the argument that a renderer with NAA needs to be "powerful" for HQP? What is the issue with a RPi4b running @Miska dedicated NAA software? Thanks for sharing your viewpoint and hoping this doesn't trigger a Pi fans' war. I'm genuinely curious as I have a Pi4B and my Holo Audio May L2 should arrive today. Cheers

 

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7 hours ago, digitaldufferme said:

@barrows Putting aside your Sonore connection, what is the argument that a renderer with NAA needs to be "powerful" for HQP? What is the issue with a RPi4b running @Miska dedicated NAA software? Thanks for sharing your viewpoint and hoping this doesn't trigger a Pi fans' war. I'm genuinely curious as I have a Pi4B and my Holo Audio May L2 should arrive today. Cheers

 

Sorry friend, for any confusion caused by my post:  I was saying that a powerful computer is needed for running HQPlayer (especially with the fantastic sounding EC modulators), not that the Renderer needs to be powerful. 

 

Now, certainly there are better performing Renderers than OTS commercial computer gear like a RPi, but that is another topic and it would not be appropriate to talk about that further in this thread.

ROON: DSD 256-Sonore opticalModule-Signature Rendu optical--Bricasti M3 DAC--DIY Purifi Amplifier-Focus Audio FS888-JL E 112 sub-Nordost Tyr USB, DIY AC, Iconoclast XLR & speaker cables, Synergistic Orange Fuses, Dark Matter system clarifiers.                                                       

                                                                                           SONORE computer audio

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13 hours ago, barrows said:

Sorry friend, for any confusion caused by my post:  I was saying that a powerful computer is needed for running HQPlayer (especially with the fantastic sounding EC modulators), not that the Renderer needs to be powerful. 

 

Now, certainly there are better performing Renderers than OTS commercial computer gear like a RPi, but that is another topic and it would not be appropriate to talk about that further in this thread.

@barrows OK that makes perfect sense now. Appreciate your taking the time to reply.

 

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  • 2 weeks later...

does anyone know if the RCA/XLR outputs of the may are independently buffered? I know a lot of dacs if you use XLR to one amp and RCA to another it essentially removes the Common mode noise rejection on the balanced connection ( https://forum.psaudio.com/t/using-both-the-xlr-and-rca-outputs-on-a-ds-sr/5208 )

 

Is this the case with the may? Or will plugging something into RCA not affect the XLR outputs?

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7 hours ago, GoldenOne said:

does anyone know if the RCA/XLR outputs of the may are independently buffered? I know a lot of dacs if you use XLR to one amp and RCA to another it essentially removes the Common mode noise rejection on the balanced connection ( https://forum.psaudio.com/t/using-both-the-xlr-and-rca-outputs-on-a-ds-sr/5208 )

 

Is this the case with the may? Or will plugging something into RCA not affect the XLR outputs?

They are 2 completely separate paths. The XLR and RCA can be connected at the same time and the sound will not be degraded or affected at all and there is more than sample power supply as well. I checked with my main agent in Hong Kong for you.

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  • 1 month later...
On 5/30/2020 at 5:25 PM, GoldenOne said:

I've now got a may on order and it should be here mid-june (went for the wildism L2).
Planning to connect it directly to the AHB2 and use Roon/HQPlayer volume control rather than a preamp given as I'll only need a few dB of volume control.

 

Hi. Have you received the Holo May ? Any initial feedback ? Have a Holo Spring, which I love  & itching to pull the trigger on the May.

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5 hours ago, punit said:

Hi. Have you received the Holo May ? Any initial feedback ? Have a Holo Spring, which I love  & itching to pull the trigger on the May.

I am absolutely blown away by it. It has far exceeded all my expectations. If you have the cash to do so, and you like the spring, do it ❤️
 

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  • 1 month later...

Hi GoldenOne,

 

Are you still enjoying the May with volume controlled by HQPlayer? Would it be possible to hear your assessment w.r.t. your RME ADI-2 DAC? Do you have a favorite HQPlayer upsampling with these DACs? Would you mind sharing this maybe?

 

Many thanks, Frank

 

 

 

 

 

Apple Powerbook G4 15\", iTunes, Metric Halo LIO-8, active speakers

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6 hours ago, fds said:

Hi GoldenOne,

 

Are you still enjoying the May with volume controlled by HQPlayer? Would it be possible to hear your assessment w.r.t. your RME ADI-2 DAC? Do you have a favorite HQPlayer upsampling with these DACs? Would you mind sharing this maybe?

 

Many thanks, Frank

 

 

 

 

 

Heya!

I am still absolutely loooving the may. Very few pieces of audio equipment get me to tears on a fairly regular basis, especially so long after the "Honeymoon period", but the may does it.

I've actually upgraded the adi-2 to the ADI-2 Pro FS R BE now, as I am using the ADC, which is incredibly high performing, for a few videos I'm currently making.
The DAC in the ADI-2 (this is the updated 4493 chip version) is still great. And its a great dac packed with features, but A/B'ing it just cannot compare to the sheer realism and depth that the may presents.

I've got several dacs here currently. The May, ADI-2 Pro FS R, Teac UD501, SMSL SU-8 V2, Motu M2.
The may is a clear step above the rest, subjectively to my ears its just night and day. And interestingly in objective tests, while I don't have an analyser and am using the ADI-2 pro ADC (info on the performance of which can be seen here: http://archimago.blogspot.com/2018/09/measurements-rme-adi-2-pro-fs-adc.html ), the may actually outperforms even the ADI-2 plugged into ITSELF (meaning the adi-2 also has the advantage of the dac/adc clock being perfectly synced, and yet the may beats it).

For volume control I've actually switched to a goldpoint SA2X stepped attenuator now, which is absolutely brilliant (though unfortunately not exactly cheap). HQPlayer and Roon volume control are both great, but I find that on any dac, beyond -10dB or so, there is an ever so slight softening and reduction in dynamic range. The extent of this will obviously depend on the dac in question and its output stage, but even the ADI-2 has the same problem once you get into the DSP area. Within its ref level adjustment range though its not an issue.
The goldpoint though, is both subjectively, and objectively just as clean as it gets. So long as you aren't running long interconnects, it is arguably the best possible "uncoloured" volume control you can get.

With HQPlayer, on the may, I typically use PCM to 768khz, LNS15 dither/noise shaping, and my fav filters are:

Sinc-L
Sinc-M
poly-sinc-XTR-mp

I sliiightly prefer PCM on the may, but DSD is more just subtly different rather than better/worse so others may feel different. They are very similar tbh and so its mostly just not wanting to have my PC screaming whilst trying to upsample to DSD constantly.

On the ADI-2, if I were using it with a preamp or headphone amp with vol control, I'd go DSD poly-sinc-xtr-mp-2s as DSD on the ADI-2 sounds considerably better than PCM to my ears. BUT, you lose the ability to do DSP/Volume control with DSD-Direct, so you need to have external volume control.

Given as currently I have the ADI-2 Pro on monitor-duty, I am simply running it native, with Sonarworks room correction.

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Many thanks for your detailed reply, GoldenOne. This is very helpful information for me.

 

In fact I had used my current MetricHalo LIO-8 interface (with analog vol control) directly into MarkLevinson 434 monos for quite some time. Before that I had also tried a passive attenuator (but probably not at the level of your Goldpoint) with a borrowed Ayre QB9 DAC but that was not really convincing. At some point I got an Ayre KX-5 (non-20) preamp over the weekend for testing, which I could not return thereafter. And even recently, I had tried again to go back to DAC directly into power amp but I had to add back the Ayre pre rather quickly. Still I have to admit that the Ayre does add a little bit of color but in a pleasant way according to my ears.

 

For room correction I have just started to use Audiolense. Thus, I am somewhat in favor of multichannel dacs/interfaces. For example with your 4-channel ADI-2 Pro (if not using DSD direct mode unfortunately limited to stereo playback), you will be able to use two channels for the mains and two channels for subs whereas Audiolense can take care of the crossover between mains and subs. See the great article here by Mitch on how to use Audiolense for subwoofer integration.

 

In fact, I had the earlier version of the ADI-2 for testing in over a weekend. It was very, very good (also in comparison to a probably not well run-in Ayre QX-5/20) but not sooo much better than my Metric Halo LIO-8 even before upgrading the latter with the new 3D card. At that time I had blamed the stock power supply of ADI-2 which I still believe to be a very limiting factor. While I still use for now the stock SMPS also with the LIO-8, I use it with an amazing, game-changing Studio Connections Black Star Power Cord ... and of course I had not and in no way believed in the effect of power cords before.

 

Now the May DAC sounds very interesting ... also to explore HQPlayer which I plan to do next ... despite it being only a 2channel dac. Thanks again for your descriptions.

 

 

 

 

 

 

 

Apple Powerbook G4 15\", iTunes, Metric Halo LIO-8, active speakers

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