From what I understand on the ALS-600, the original  production had a 
linear supply, while several years ago they  added   a switching supply. 
   I am not aware of any problems with the switching supply.  Looks like 
you can pick either one, with the switching supply  $120 over  the 
price of the amp with the linear supply.

73, Steve  KW3A


On 5/2/2013 10:02 AM, Richard Fiorello wrote:
> Hi;
>

Thanks for the amplifier info.  I guess I should be happy there are no t
> v i complaints.  Are there two different versions with two different
> power supplies?  If one has a switching supply wonder if there are any
> unwanted side effects?
> On an unrelated note, I am the happy owner of a mj88 which is kenwoods
> microphone cable adaptor for the ts480.  I've gotten some conflicting
> info as to whether I have to rewire the thing?  Is it usable as is?
> Thanks and remember be nice to one another.
>