NAD C355BEE Owners - Advice Needed


One of my friend who purchased a used unit few months ago noticed from the user manual that there are links provided together with the amp that shall be connected between the Main-in and Pre-out sockets in normal use. The links were not found in the box when he got the amp.

The question is do the links really need to be connected between these sockets at all times even when they are not in use? How do these links look like? Are these a metal connector or a piece of short wire?

For users of the C355BEE, the user manual page 8 item no. 12(Pre-Out 2) and item no. 13(Main In) states "In normal use, these should be connected to the Main-In sockets/Pre Out 2 Sockets WITH THE LINKS SUPPLIED".

I have sent an email enquiry to NAD but have not got any response from them. Personally I reckon there wouldn't be any issue without the links but just wanted to be sure. Any advice would be helpful. Thanks in advance.
ryder
I have a NAD C372. You need the links or you will hear no sound because the links connect the preamp and power amp sections. You can use interconnets/jumpers in place of the links. Preferably short interconnects.
My brother has NAD and uses Audioquest Python jumpers (around $40 pair) instead of links - better sound. Check Audioquest website. Any audio store that sells Audioquest can make jumpers for you but they will be soldered not welded like original ones.
Here are some options:

http://www.dedicatedaudio.com/inc/sdetail/5274

http://cgi.ebay.com/Audiophile-Grade-Pre-amp-Jumpers-with-Cardas-GRCM-6_W0QQitemZ380024586299QQcmdZViewItem?IMSfp=TL080505199a8044

http://www.needledoctor.com/Audioquest-Preamp-Jumper-Cables

I am personally not crazy about the Audio quest jumpers, but they are better than stock metal bars.
Cardas jumpers may sound better. Music Direct sells Cardas and Audioquest. You could try both, and return one.