Jeff Rowland 501s burn in ... a strange experience


I have received today my monoblocs 501 and borowed a ML 39:
ML 39
NBS monitor III
Capri
NBS Monitor III
monoblocs 501
NBS Monitor IV
Infinity Renaissance 90

around 2:p.m (Europe) I have installed the system:
sound very detailed, beautifull soundstage imaging & focus, great energy,
on the negative side, some high frequencies too harsch a little bit venomous

6 hours later (system working all the time) complete change ... do the monoblocs suffer jet lag? ... ;-)

the sound has become very fat and heavy, has the energy of a sleepy hypopotamus, everything is slow, too warm, without focus, like coming from bad tube components ...

from one extreme to another... how is that possible, so extreme, I am ???

any suggestions?

thanks
clavil

Showing 1 response by xti16

Just keep them 'burning in'. So far every new product I have purchased sounded great out the box then in time (from 20 hrs - cdp to 100hrs speakers - 50hrs int amp) they sounded miserable. Oh yeah cables too (almost 500 hrs for the PC's). From those points which all varied they only got better. Personally I would keep burning them in. Maybe some JR owners could tell you how long those amps take to burn in.