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Multichannel Amplifiers and switching between sources


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Hi,

 

I’m after information about switching multichannel amps between different multichannel sources.

 

I’m a Roon user, and I’m also interested with surround mixes for music listening. Multichannel SACDs and DVD-As are in my collection. Still have an Oppo-203 (modified) and rip SACDs to DSD with an older Oppo.

 

So I’m intrigued with the ExaSound S88 multichannel streaming DAC https://www.exasound.com/Products/s88StreamingDAC.aspx

Review - https://www.stereophile.com/content/exasound-s88-multichannel-da-processor

 

The issue being then; I need to also use my AVR with the same speakers.


Is there a quality 5 or 7 channel amp, where it may also be easy to switch between sources easily? I know many have dual balanced and RCA inputs, but I can see problems say in switches at the back.

 

Some other fora talk about switches like this one - Kal in the review above uses a Coleman eight-channel (analog) switch http://www.colemanaudio.com/swtchr.htm. But I’m hoping to avoid the cost and complexity.


Quality-wise, I’m after something like a Elektra with at least 5 channels.

 

Feel free to also go lateral and offer suggestions, say replacing my AVR with an AV Pre of some description, or switch alternatives.

 

Thanks.

 

 


 

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Why not get a multichannel avr that is Roon ready?

 

I don’t know what your budget runs to, but, for example, Audio Connection in NSW has a Lyngdorf MP50 going in their trade ins that would do a great job of this. https://audioconnection.com.au/collections/processor/products/lyngdorf-mp-50-as-traded
 

If that’s too rich for your blood, arcam and nad have Roon ready avrs which might fit the bill.

 

Personally, I can’t imagine caring enough about multichannel audio to make an investment like this. I run my HT on a separate processor to my stereo listening using HT bypass.
 

Let’s me sample multichannel when I want to but the mains will always go through a separate 2 channel Preamp no matter what they are playing back.

 

 

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On 12/09/2021 at 4:02 AM, John Raffin said:

Hi,

 

I’m after information about switching multichannel amps between different multichannel sources.

 

I’m a Roon user, and I’m also interested with surround mixes for music listening. Multichannel SACDs and DVD-As are in my collection. Still have an Oppo-203 (modified) and rip SACDs to DSD with an older Oppo.

 

So I’m intrigued with the ExaSound S88 multichannel streaming DAC https://www.exasound.com/Products/s88StreamingDAC.aspx

Review - https://www.stereophile.com/content/exasound-s88-multichannel-da-processor

 

The issue being then; I need to also use my AVR with the same speakers.


Is there a quality 5 or 7 channel amp, where it may also be easy to switch between sources easily? I know many have dual balanced and RCA inputs, but I can see problems say in switches at the back.

 

Some other fora talk about switches like this one - Kal in the review above uses a Coleman eight-channel (analog) switch http://www.colemanaudio.com/swtchr.htm. But I’m hoping to avoid the cost and complexity.


Quality-wise, I’m after something like a Elektra with at least 5 channels.

 

Feel free to also go lateral and offer suggestions, say replacing my AVR with an AV Pre of some description, or switch alternatives.

 

Thanks.

 

 


 

Ideally any audio signal being switched needs to be done with contactless method, this then enables the switching to be done very close to where it is required, rather than through what can add up to metres of wiring carrying your audio signals internally.  But reading the Exasound brochure i see it caters for switching already. If you need your AVR with all its facilities and the Exasound separately then you can use the method below, where you just need two PVG612 devices ,  or indeed if you don't mind loss of 60 ohms then other methods are very attractive too.

 

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Hi John,

 

I had a similar problem, after enjoying my Denon 3930 DVD player for a while, then adding an Oppo  BD player.

 

I wanted the choice to send the analog outputs of either to the amplifier, and after a lot of looking I decided to build a switch.

 

It had to do all 7.1 channels, and I wanted to switch earths as well as actives, to avoid earth loops (all RCA, fortunately). Then I thought I'd like to switch the High Quality Stereo outputs of both machines into the Front L & R of the power amp, so it became a 4-position switch:

HQ Denon - HQ Oppo - 5.1 Denon - 7.1 Oppo.

 

To save an awful lot of money on plugs & sockets I hard-wired it all, after measuring to get wire lengths as short as practicable.

 

I found the wires just too stiff inside the little box - it put too much strain on the 4- leaf switch, and I broke a couple trying. So I used smaller wires inside the (shielded) box, which worked.

 

I remember counting 169 solder joints, so was pleased to find no errors.

 

I screwed it on the side of the cabinet, fairly out of sight, but accessible.

 

Not everyone's cup of tea, and it took 3 months - not the prettiest (that could change) - but worked really well.

662980345_Switchinner.jpg.6b02800fcd9dac0de97b4e6943ad7df9.jpg

 

91754502_Switchouter.jpg.98cdc861a54b0c5c60ef044b668b83bb.jpg

 

Don't know if that's any help. I was going to an AVR's 'direct' analog inputs - no manipulation apart from the volume control, which you'd need if going straight to a power amp. (I've just recently built a 6-channel attenuator; since upgrading to an Oppo 205, I no longer need this switch).

 

Edited by BioBrian
bit more at the end
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3 hours ago, BioBrian said:

Don't know if that's any help. I was going to an AVR's 'direct' analog inputs - no manipulation apart from the volume control, which you'd need if going straight to a power amp. (I've just recently built a 6-channel attenuator; since upgrading to an Oppo 205, I no longer need this switch).

 

That is impressive and would certainly work with switching a pair of oppos utilising their digital volume controls . Other brands would need attenuation as its pretty rare 😉

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