Bogen Front End

[lpd]

I'm looking for some ideas for the front end on a Bogen MO-100A conversion.

I'm rebuilding power supply, converting to EL34 output tubes, but not sure about the 7247 input tube. Any suggestions for a decent input driver stage?

Here's the schematic....

MO-100A

Thanks

 

[jon_010101]

Hopefully bricktop will find this thread ... I sold him my old MO-200, and he redid it with a 6CL6 differential amp front-end. After tuning the global feedback, he got some great square waves and very low distortion.

 

[lpd]

Yep, seen the schematic and consulted him on his build. 6CL6's aren't that easy to find here though. Just thought about trying a more common tube ie: 6DJ8 ect.