Question Advise on Analog Bypass on old T747 receiver and upgrade.

[Leam]

Advise on Analog Bypass on old T747 receiver and upgrade.



My existing system consist out of old NAD T747 receiver with Kef R series centre and rears for surround. NAD C275BEE amp on pre out with Kef R series floor standers, and Mac mini to the NAD M51 Dac in with Analog Bypass through the T747 for stereo music. My main focus is stereo music.

I replaced the M51 DAC with Bluesound Node Icon and are now thinking of replacing the C275BEE with a Nad M23 amp and maybe upgrade the floor standers.
My question is, will I be losing quality if the M23 are being fed through the T747 connection and volume control in Analog Bypass mode? Would I get better quality by just removing the T747 and just settle for plain stereo with the Icon feeding straight into the M23?

 

[nads]

Sounds like you are just using the 747 as a preamp for stereo sound but are also using it for the surround amp when wanted, by routing the preouts on the back to an other amp for the stereo part.

Not heard of the term analog bypass before. But my old 744 was not as function loaded as the 747.

 

[Leam]

Sounds like you are just using the 747 as a preamp for stereo sound but are also using it for the surround amp when wanted, by routing the preouts on the back to an other amp for the stereo part.

Not heard of the term analog bypass before. But my old 744 was not as function loaded as the 747.

Correct. The 747 has an Audio Pre-Out section connected to the C275BEE amp for front Left and Right channel. Under "Listening Modes" you can select "Analog Bypass".
At Analog Bypass, the DSP circuitry is bypassed but full tone control functions remain.

 

[James105]

Advise on Analog Bypass on old T747 receiver and upgrade.



My existing system consist out of old NAD T747 receiver with Kef R series centre and rears for surround. NAD C275BEE amp on pre out with Kef R series floor standers, and Mac mini to the NAD M51 Dac in with Analog Bypass through the T747 for stereo music. My main focus is stereo music.

I replaced the M51 DAC with Bluesound Node Icon and are now thinking of replacing the C275BEE with a Nad M23 amp and maybe upgrade the floor standers.
My question is, will I be losing quality if the M23 are being fed through the T747 connection and volume control in Analog Bypass mode? Would I get better quality by just removing the T747 and just settle for plain stereo with the Icon feeding straight into the M23?

Hi,

So Bluesound manuals are a bit vague and I'm going off the node options I can see in the set up menu. But the way I'd do it is connect the Icon to the M23 for music as is your priority.

Then for films connect the pre outs of the 747 to the analog inputs of the icon and set the or switch the volume level to fixed for that input on the icon which I think will mean the icon is the pass through and the volume control of the 747 will control the M23.

But definitely get the M23 🙂