Purpose of opamps on a 3886 board?

[uzernaam]

I've seen many 3886 boards, none of them had opamps that I was aware of. There is one on ebay that has the NE5532 onboard.

Why would it be there?

Effect on sound?

Thanks!

 

[Redshift187]

There are two reasons I can think of for putting an op-amp on an LM3886 board. An input buffer or a servo.

 

[AndrewT]

the opamp + the chipamp could be arranged as a composite opamp.
Read Walt Jung for details.

 

[random007]

There's a thread that may be useful to you http://www.diyaudio.com/forums/chip-amps/142923-yuanjing-gainclone-3886-ebay-amazing-value.html