No, no maintenance is required in normal use. My 1200E is now 13 years old and I've sent it back to Chord Electronics once (five years ago) to have it upgraded to latest specification, which involved checking the power supply capacitors and changing some distortion resistors for slightly lower distortion.
I've answered in English, JP, because this information may be of general interest to our readers.
It's the depth, Mike: the original Chord cable is shoulder-free, so it goes deep into the recess and fully mates with the socket. All the third party cables use connectors like the Martin Kaiser where a shoulder prevents it from fully mating. Damned nuisance!
Ah that's what it is - I had always wondered about that! Rather ironic that the cheapest cables should offer the most secure connection ...
ASUS Tinker Board S - Oehlbach XXL MasterClock - Topping D70 - Chinese RVC - Audio Synthesis Desire Decade - Sonus Faber Venere 2.5
I know - I'm having TonyC (Coherent) make me one of his wonderful 6D power cables for my Chord, and we're going through the usual list of third party 16A/Hubbel connectors to see which one will work best. The Martin Kaiser silver up to now has been the best but it only just connects and doesn't sit as securely as I would like. Bevelling the shoulder carefully helps it to go in by a few more mm, which does help. The usual connectors from the likes of Furutech are no use at all.
Can you explain your system to us Clicks could be happening for a variety of reasons. Perhaps send us some pictures Do the clicks happen all the time. How often do they happen Do just happen with all your sources e.g. CD Player and Turntable Its very hard to isolate potential issues without understanding a bit more about the system
Music is where I find my solace Nothing is more beautiful than a guitar, save perhaps two. – Fredric Chopin