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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
kevinshunt OP
13 posts
 

Contacted them last Friday, hoping to hear back Monday, they are a reputable reseller out of CO.  Yeh I'm disappointed as I really wanted to hear it in my system, it's replacing a Peachtree Nova pre that's out of rca inputs.

kevinshunt OP
13 posts
 

Yeh it’s the very very faint sound when at full volume that may be a non-tube issue

laginz
35 posts
 

If it was just the phono section, it could be you are running a very low output moving coil cartridge. Unless it has the optional John Curl phono board, the regular Audible Illusions phono board does not have much gain.

hgeifman
2,182 posts
 

 

+1, “Contacted them last Friday, hoping to hear back Monday, they are a reputable reseller out of CO”.

It is possible something broke during shipping. In any case, based on your post, the Audible Illusions Modulus 3A unit needs to be returned for a checkup.

glennewdick's avatar
glennewdick
1,664 posts
 

eing on both right and left channel makes me feel there is something else going on. unless the seller sold the unit not working correctly. Something could have happened during shipping as well. nice unit though when working correctly. 

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