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Audible Illusions Modulus 3A troubles

Just purchased a used Audible Illusions Modulus 3A preamp for my system but only getting very very faint sound when turned all the way up.  Plus the very very faint sound is very fuzzy as well. 

I popped off the top & re-seated the 4 tubes but that was no help.

My 2 amps are both rated at 50k ohms input sensitivity, so this is the right preamp for them at around 1.2k ohms output sensitivity, running a biamp configuration.  AI documentations confirms this.

I've tried each amp on its own, using both output RCAs on the preamp, to no avail.

How to tell what is wrong...looking into the return policy, but at least the shipment was insured.

Any ideas?

Thanks-Kevin

kevinshunt
dekay's avatar
dekay
5,556 posts
 

Return it if it was offered as a properly working unit.

DeKay

kevinshunt OP
15 posts
 

in the manual there is a good description of how to test tubes by rotating the two for the line stages, so will try that.  I haven't tested phone input yet, they have their own set of tubes.  Four 6922s in total - I've found the least expensive JJ brand for around $22 each.  Will do this today during the Bears game, as I don't expect to be happy about their performance against Packers.  Anyway, will try this to see if anything stands out.

devinplombier
116 posts
 

Was it offered as a working unit?

kevinshunt OP
15 posts
 

Yes it was advertised in full working order

hiend2's avatar
hiend2
418 posts
 

Did you at least contact the seller.

I hope it works out but

Id thing new tubes might not be the problem..

They are great preamps I have owned 4

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