K&K phono break-in period


Just thought to ask fellow owners of this phono stage on their experiences on the break-in period. I finally took the plunge building the Maxxed-out version (w/ Tantalum resistor & LL1931 upgrades) which I completed 2 days ago. It will be compared to my 7 year old AES PH-1 phono pre. Been following the K&K phono evolution (rave reviews) since 2003 which is how I got convinced to finally get it. Building it was so much fun and quite straight forward. Never had a problem putting it together. However, it needs to be broken-in...I'm leaving it powered-on for at least 5 days continuos per intructions.
Can anyone tell me approximately the length of burn-in before I can hear improvements in sound? 100-200 hours? Maybe longer as you have the tubes, Capacitors and transformers to break-in...
How did your units sounded right after build? One thing I noticed is this unit is dead quite! The bass is just phenomenal... Any comments/advice on this or what else to expect would greatly be appreciated...Thanks in advance.
jolen1aub

Showing 1 response by wrm57

Your estimate is just about right on. I bought a "maxxed out" built by Kevin a few months ago. He told me the big Cardas caps take the longest--100 hours or more--to fully settle in, and that was pretty much my experience. But the great bass you mention was there from the start, as well as the rich, realistic timbre. Highs became increasingly open and delicate as burn in progressed. Enjoy!