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CODA Continum 8 Imput Impeadence

Hi,
im looking to up my amp game from 2 Parasound A23's
I am interested in the CODA Continum 8 monoblocks, they will be built in the TM chassis without the meters and faceplate milling (not a fan) I am on the verge of pulling the trigger but am concerned with the low input impeadence.

CODA states it as 75K ohms unbalanced and just 1K ohm balance (which is what I will be running)

Pre-amp is an Allnic L-1500 tube with 150 ohm out put impeadence

Does anyone have CODA gear and what pre are you running with it? That very low imput impeadence has me worried

thanks for any guidance or experience!
-JP
jp-2213
unsound
7,341 posts
 
I'd hazard a guess that it's a misprint. Contacting Coda for confirmation might be helpful.
jp-2213 OP
43 posts
 
You are correct sir!
the true values are 75k unbalanced and 10k balanced
This information came from Destination HiFi who called and spoke to Coda, still very low

Thanks
-JP

yogiboy's avatar
yogiboy
5,805 posts
 
The rule of thumb is the input impedance should be at least 10 times the output impedance. At 10k you should not be concerned!
almarg's avatar
Ag insider logo xs@2x
almarg
9,670 posts
 
The outputs of the Allnic L-1500 are transformer coupled, and are described in its manual as having an output impedance that remains essentially constant (at 150 ohms) across the entire audible frequency range. So it should be fine driving 10K.

It would be a different story in the case of the some tube-based preamps which have capacitively coupled outputs. In those cases the output impedance might rise to much higher values in the deep bass region than the specified output impedance, which is usually based on a mid-range frequency such as 1 kHz. But that is not the case here.

Regards,
-- Al
tinear123
241 posts
 
Odd that the Continum #8 is not on the Coda web site as I was interested in this amp as well.
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