Well, 40 years old amp with original "cardboard" Mallory PS capacitors in it... Five pieces of 16µF/450V, first two in parallel.![](http://img347.imageshack.us/img347/456/mallory3nu.jpg)
Strange sound for years ("bad" distortion, bad LF tones, hiss and buzz higher then normal, "anemic"...), and I finally soldered new caps - two "Mundorf M-Lytic HV" 33+33µF/450V double electrolytic capacitors.
![](http://img347.imageshack.us/img347/350/mlytichv3mh.jpg)
Well worth the efforts - sound improved by lot - definition of notes, clarity, less hum...
![](http://img142.imageshack.us/img142/1733/deluxe1tz.jpg)
The next patient is >25 years old "Acoustic 220" bass amp... ![](http://www.audioroundtable.com/emoticons/smiley.gif)