How do you break in a preamp

I use the Purist Audio System enhancer CD to break in all new electronic devices and cables. Although I never compared it with other break in devices, considering the terrible noise coming from the speakers it should be efficient!

I use the IsoTek System enhancer CD to break in all new electronic devices and cables (and to warm things up after a long break). IMHO, it was money well spent.

Use it.