Sonic Frontiers line2 preamp

contact chris johnson at parts connexion in Canada.

HI, thanks very much for your response, answered my questions very quickly. Regards Steve 

Normal is that front red led goes out after standby is pressed and preamp goes to operation. The rear ones stay on all the time during operation.
Front panel may need attention as push buttons if inactive for long time may not have contact for operating the relays. It could happen to most of them but not all. Try to keep them pressed for a while to see what happens 
Or you fix it or you operate the unit through the remote control.