AudioBanter.com - View Single Post - NAD amp distorting heavily after running a bass guitar through it.

wrote:

My NAD 214 stereo amp is dead or dying. Any signal I run through it is
extremely distorted and I have to turn up the volume to even hear that.

Beginning a few months back it would sound fine and then all of a
sudden die and the sound would become horrible distorted. The time it
takes the amp to go from working fine to distortion box continually
shortens from 20 to 10 to 5 to 2 to 1 minutes. Now it doesn't work
for anytime at all.

I haven't been playing nice with it recently. I have run a microphone
and bass guitar through it. However, the amp had experienced the
problem I described above before this.

So my question is this: Is there any fundamental reason why running a
bass guitar or mic through this amp would hurt it?

No, unless it was a very high output active bass and a badly-designed
amp. Standard bass pickups rarely put out more than 100mV on average;
mics even less.

Also, does anyone
have any idea what might be wrong with my amp.

Dodgy solder joint, probably, which breaks a connection as the amp warms
up and the PCB expands. Open it up and take a look - whilst it's powered
off!

--
Mark.
http://tranchant.plus.com/