Recently I have bought a Nait 5si amp. When I first connected it to my system I was really impressed. There was lots of bass, and it was tight, punchy and solid with great sense of PRaT. Then, day after day this initial impression faded away. The bass became weaker, more loose and boomy. I also don't feel this sense of PRaT. I have the amp from 8 days. Initially I was using Neotech loudspeaker cables (2.5m length) and then switched to Chord Rumour 2 (again 2.5m). I thought it might be the Chord cable and turned back to Neotech. I had more bass than with the Chord but again the sound wasn't as good as the first day. I also found that the silver in the Chord Cable added a bit harshness to my system. The rest of my system is the following :
Source: Google Chromecast Audio - streaming Spotify Premium and a Sony X5000 CD player used as a transport
DAC: Rega DAC-R
Interconnect cable: Chord Clearway
Loudspeakers: Zu Audio Omen Standard
I always keep the amp on. I've read that Naim gear takes some time to burn in properly but day after day I doubt the sound will return its initial form. Is this behaviour normal or something might be wrong? The reason might be the excitement surronding my new gear and getting used to it but who knows.. I have heard a few months ago a Naim UnitiQute2 in a local shop and I also experienced this wonderful bass response and PRaT as the first day I listened to my Nait 5si. The dealer there told me their amp was burned in for around 20 days. Do you think Naim NAC A5 cable can increase my bass response without being harsh?