Meridian Unplugged - Powered by MrTechGuy.co.uk Forums Discussion Meridian - Systems HD 621 at last

We think, but it's not confirmed yet.

A HD621 configuration Wiki would certainly be helpful.

Tim

The logic is to get high res digital into your processor rather than analogue.

As well as audio upsampling (and possibly / probably apodising) and dejittering there is also video dejittering.

I was about to post that the HD621 allows us to break into the secure HDMI data stream and extract the digital audio because it then passes it on in an approved secure (MMHR) form - thus meeting the copy protection requirements and justifying its cost.

But then I thought....does it actually do that? The alternative options we have seen discussed here imply that the audio datastream is not all that secure. Or am I missing something?

Because it is still one of the sweetest sounding 'pre' amps out there.

If you have a �10k transport and DAC do you expect to hear a difference putting it into a Nad amp at $100 and a Meridian 2 channel amp at $10k??
Of course, and it is no different with a multi channel pre/pro.

I guess I'm applying the mentality from the video side where I want the video image to get out of the transport with the minimal amount of processing so that my Radiance XD can do all the processing. Additional processing just adds the possibility of degrading the signal. Maybe it is not the same with the audio side.

We're talking about digital video here. There's very little degradation beyond gross negligence that can occur... I've certainly noticed no issues with video going through the HD621 thus far.

Mark

It depends on whether you think video dejittering could cause degraded picture quality!

It's probably my lack of understanding of digital audio processing but in the video realm if you have a excellent video processor you don't even want the chip in the source device to do mpeg decoding. That was the attraction of SDI mods of DVD players so you bypassed all the processing in the player and sent the "raw" signal to the video processor. Now there are players that send a 480i signal out of the HMDI slot for SD DVDs which pretty much has the same effect of bypassing the player although there still might be some video processing taking place in such players. For Blue-Ray I guess just by setting the output to 1080p24 you bypass the processing in the BR player although there still might be some processing taking place.

There ARE surround processors now that decode the new high def sound formats.

Perhaps with the HD621 Meridian is taking the approach that it is not going to get into the decoding, only the jitter control, etc. Also I suppose just the fact that the video signal is being separated from the audio is a benefit according to the Meridian literature.

Got mine Friday ser No100062 from Phase3 Southampton paired with 861v4.25
DSP50000 96/24 x5 Oppo 983-H/XA2/S-550 [us] sky hd. Oppo set to LPCM 7.1 OUT
as recommended in HD621 manual. XA2 LPCM out. S-55o to Auto only other option 2ch/
LPCM. Display on 861 shows Oppo DVD MHR MOVIE6 96K dvda MHR MUSIC6 96K CD MHR
MUSIC6 88K . XA2 hddvd /DVD MHR MOVIE6 96K CD MHR MUSIC2 88K . S550 BR MHR
MOVIE6 96K vdv AC3 3/2.1 48K DTS 3/2.1 48K set menue on DVD to stereo MHR MOVIE2 96K CD MHR MUSIC2 96K . Handshake was seamless sky hd is H6 on HD621 and 01 IE42 0n the 861. Have been using IA45 with a Zektor mas 7.1 the HD621 hase Stuning Sound detail coming from every point in the room the sound is in the room not the speakers CDs sound great in all players [big sound]. Picrure has
improved subtle blemishes in skin tones have more detail. Display is SONY bravia 46x2000 cal with DVE/DVE HD/ DVE HD BASICS BR /HQV HD/ HQV BENCHMARK DVD. It has a receiver [sink] in it so you can play music with the display off Lip-sync on Sony 45ms . Oppo 70ms .xa2 20ms

Mike

Great information. How about a little punctuation and formatting so those of us with impaired stream of consciousness interpretion faculties can follow along?

I had mine HD621 since Friday, spent few hours trying different options.

When connected before video processor(Crystalio II), all is good.

However when it was the last device in the chain before PJ, there were HDCP handshake drops all the time with black frames on the screen...

The last thing that bugs me is 5.1 96KHz audio from G98 over HDMI. No sound, just static...but CD on the same player passes without a glitch.