Allo Piano Dac 2.1 first impressions

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Allo Piano Dac 2.1 first impressions

Postby fai » Thu Jun 08 2017 01:30

Thanks for this Allo!

I'm testing the dual stereo. My setup has a pair of subs where I run crossover at 48Hz on the sub itself. In dual stereo setup all the connections are used. Dual left / right to subs and mains.

I've been able to recreate the volume channel imbalance when using volumio as a DLNA renderer and controlling the volume from the DLNA source. When increasing the volume from the DLNA source, the left channel comes up increasingly louder than the right.

To avoid this I would have to use volumio volume control where the volume increases in balance.

In 2.0 mode where I only use the Piano mains output (with splitter to subs) this volume issue doesn't exist.

Possibly a DSP / volume matching issue? Alsamixer is balanced on both channels in all instances.
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Allo Piano Dac 2.1 first impressions

Postby jonners » Wed Jun 14 2017 07:58

After doing the update to version 2.193, I notice that resampling to 768kHz is now offered with the 2.1 in place!!
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Allo Piano Dac 2.1 first impressions

Postby TreveK » Wed Jun 14 2017 09:27

jonners wrote:After doing the update to version 2.193, I notice that resampling to 768kHz is now offered with the 2.1 in place!!


Is it better to upsample in software (Volumio), or let the DAC (Piano 2.1) handle this?

In fact, does anyone know if the Piano 2.1 upsamples at all? Some DAC's do, some don't.
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Allo Piano Dac 2.1 first impressions

Postby michelangelo » Wed Jun 14 2017 09:51

IMHO resampling with ANY I2S DAC does not make any sense (except ESS Sabre ones).

So I don't suggest to enable resampling with PIano
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Re: Allo Piano Dac 2.1 first impressions

Postby PatrickB » Wed Jun 14 2017 14:14

michelangelo wrote:IMHO resampling with ANY I2S DAC does not make any sense (except ESS Sabre ones).
Why for ESS Sabre ones?


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Allo Piano Dac 2.1 first impressions

Postby michelangelo » Wed Jun 14 2017 14:27

Because they require to be fed with 24bits stream, otherwise they don't work.
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Allo Piano Dac 2.1 first impressions

Postby TreveK » Mon Jun 19 2017 10:52

michelangelo wrote:IMHO resampling with ANY I2S DAC does not make any sense (except ESS Sabre ones).

So I don't suggest to enable resampling with PIano


Thanks very much - in that case I'll leave that setting untouched.
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Allo Piano Dac 2.1 first impressions

Postby swaroopks » Fri Jul 07 2017 05:22

Hi,

I am using the Vana player and so the piano 2.1 is connected to sparky. Is the dual mono configuration yet to be made available for sparky?
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Allo Piano Dac 2.1 first impressions

Postby michelangelo » Fri Jul 07 2017 14:23

Yes, we're about to release it
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Allo Piano Dac 2.1 first impressions

Postby snuka » Fri Jul 07 2017 18:55

I just wanted to reiterate: I am so impressed with the Piano 2.1 + Kali + Volumio in Dual Mono mode

My setup has now moved into the emotional domain :D and music has become alive... all because of your efforts. I have swapped a couple of amps (Quad 306, LJM D15, Gainclone, etc.) and they all sound fab but my favourite is the 306. speakers are KEF LS 50 and the bass is soooo nice (one guy asked me if I had a sub ;-). The soundstage is precise and almost palpable... ok, I'm going over board, but...

Thank you !!

All the best.
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