I just bought a second hand AMP800 and I've plugged 3.5 to 1/4 cable into the input L & R into the amp with a pair of headphones plugged into the headphone jacks on the front.  

Not only do I not get any sound, I also don't see any of the LEDs on the front moving which is making me think the AMP itself is not working.  I've tried multiple input sources in both input A and input B; same result. 

Any other suggestions before I email the buyer to get a refund on a defective unit?

Hi there. Just looking for some help. I want to bridge channels A and B and also channels C and D together to effectively create a 2 channel amp (with more power). I have linked channels A & B and reversed the polarity oh channel B then connected to the +1 and +2 terminals of the speakon out for one side, then the same with channels C & D for the other side. Is this the correct way to do it?

Also - how should I use the gain knobs on the front of the amp when in bridge mode in this way as gain knobs A and B both seem to affect the gain (same for C & D). I hope that I have explained this all ok. I am using the amp to drive 2 x Nexo PS15s in passive mode.

Thank you for your help. If you have a manual for this amp I'd be very grateful as cannot find one online. 
Best wishes,

Toby

Hello!

Does anyone know how to get in contact with someone regarding repairs for a Behringer power amp? We submitted a ticket (Ticket Number: CAS-480871-P8N9F6), but it was closed and we received no response. Any help would be greatly appreciated.

Thanks!

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