Capacitor

Dear @jasbirnandra  : This is the Vishay alternative to Wima and Kemet:

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R.

Some general recommendations:

- Do NOT change the capacitance value of your capacitor. The design calculations are based on its existing value.

- DO change it as long as you are INCREASING its voltage rating. Never any harm in increasing its voltage rating.

- Do NOT *EVER* replace a bi-polar capacitor with a polar one, otherwise it may blow up.

You can change the value of an output coupling cap and do so safely and do so to better effect. But, as a general principal you want to stay near tolerances as designed.
Sometimes people violate rule no 2 above because they want to better match impedance between amp and preamp. Manufacturers usually try to pick a level that will match with a larger number of combinations yet you can customize this so the gear mates better. There are good calculators out there for this purpose.

Here’s a great calculator to use when matching output caps. 
http://www.v-cap.com/coupling-capacitor-calculator.php

I hardly ever check this forum any more but I did today and I read this entire thread.  And it reminded me why I don’t read threads here.  Same people arguing about the same topics, over and over.  Don’t you get tired of this?  You guys need to move on!