Mezmerize B1 Buffer Preamp

diyAudio Chief Moderator
Joined 2002
Paid Member
The power amp has about 22dB of voltage gain, right? That's high enough. If your speakers are not particularly insensitive, unity line level gain will suffice with digital sources of about 2V output in the context of such a gain structure system.
 
diyAudio Chief Moderator
Joined 2002
Paid Member
Mine is 300mV consumer output level standard. To cover all those different sources in good dynamic even with some quiet records and 89dB speakers better use a times two gain preamp (6dB) or just put a x2 gain circuit/transformer at the output of the phono inside its box and use a unity gain line preamp like the Mez.
 
Hi,

Can I run an op amp off the existing 10v rails on the mezmarise board. opa 1692 650 µA per Channel. Using the input relays to have a gain position on the input rotary, for each input. Thus accommodating the rare occasion my system requires more gain without permanently introducing another stage.

Wonderfully transparent pre amp with drive, Many thanks.

Any thoughts gratefully received,
Kind regards Nick.