1

MP599 Microphone preamplifier / Re: Jumpers

« on: June 30, 2021, 05:56:28 PM »

I followed the test set instructions.  I have JMP2 inserted and JMP1 not inserted.  I was asking because I read a review about the 599 having jumpers that alter the ratio of the input and output transformers:

https://gearspace.com/board/reviews/1007611-sound-skulptor-mp-5-99-a.html

But I don't see anything in any of the 599 docs that talk about the jumpers doing anything to the transformers.  That review is 5 years old, did a previous version of the 599 have jumpers for the transformers?

Thanks!

KJ 

2

MP599 Microphone preamplifier / Re: Jumpers

« on: June 29, 2021, 11:30:55 PM »

Board says Rev 1.6

JMP1 and JMP2 are the names.

Thanks,

Karl J

3

MP599 Microphone preamplifier / Jumpers

« on: June 24, 2021, 07:46:23 PM »

What are the two jumpers doing?  And what is the normal/standard setting?  Should they be inserted or left out?