Can someone help me identify this Studer card?

[Nescafe]

I just got this 2 cards from friend, do anyone know what kind of card is this? I have try to search 1.080.806.11 but cannot find something.

Thank You

 

[analogguru]

Appears to be something like an audio line-driver card from a Studer A80.

 

[Nescafe]

Hi analogguru,

Thank You for replying, found the the information I need, and You're right that is A-80 line amplifier 

Thank You.

 

[madswitcher]

yep, they are definitely A80 Line Driver cards - the later type that use the 5534 chip.  They are actually very good as the transformers are very high quality. 

You should expect to get from a good 10Hz to about 150kHz frequency response with low distortion at 0dBm into a 600 ohm load.  The gain is quite high - about 34dB IIRC, but you can bring this down by changing one resistor, eventually being limited by the 6dB gain of the transformer itself.

Cheers

Mike

 

[madswitcher]

I forgot to add, let me know if you want to run them up and I'll get hold of the pin outs for you - they run off +/- 12 volts

Regards

Mike

 

[Nescafe]

Hi Mike,
Thank You very much for the info and offer Mike, I really do appreciate it, I already have the schematic so the pin can be trace pretty easy (and that will help me learn more about the circuit) and right now I still don't have any plan to use it, I just got as a gift from friend, old technician 

I just curious if this really have 34dB gain, I will try later and suddenly I think about Ian ruffrecords UniEQ  :

Thank You