DIY Phono Loading Plugs Question

Yes, mine is not the latest, but just previous (without special power supply). Anyway, i asked joe for a mod. I can go higher than 47 000 Ohm for my MM (mainly 100 000 Ohm). But for MC it is nice to have many optional RCA plugs with different load resistors. If you have 100 ohm and 470 ohm, you must have 47 000 Ohm too (for MM). So you can switch to high gain and use 47 000 Ohm for your MC. We have a club of 47k lovers for MC here.

P.S. Joe is a nice guy to talk to, i wish every manufacturer do the same for their customers.

For those who own or consider buying a JLTi, off topic but a bit of advice.

I bought an early version in the black case when originally produced in Oz.  At the time they claimed a wall wart worked fine with nothing to be gained by an outboard power supply.  But an audio buddy who knew a lot about electronics insisted it would and built me a fully regulated PS for mine.  That offered real improvements with more solid and extended bass, a larger soundstage, increased dynamics, and simply greater overall listening enjoyment.

Later JLTi offered their own OB PS so apparently they realized the wall wart was not the best answer.  So if you have a LJTi without an OB PS then I suggest you are nor experiencing the full enjoyment possible.

I'm not sure if they have what you're looking for, but you might try  https://www.dbsystemsaudio.com/

@chakster @pryso  Since mine didn't come with a 47K plug I figured that was the default loading. I have it switched to high gain. Again with no problems. FWIW both my wife and I liked it better without loading. Bigger  soundstage. The 470ohm plug offers a more focused sound which is somewhat alluring. But speakers do a disappearing act with no loading. Much wider and deeper soundstage.

I bought mine from Jay @ Audio Revelations shortly after the shootout with several other phono preamps, most a lot more expensive. Jay picked up that line shortly thereafter. I didn't buy the OB power supply because the cost was more than the benefit which everyone had said was a tradeoff at best. Thanks for your help Gentlemen. Guess I'll call Joe and check on the upgrade & PS.

@artemus_5 you’re right, your internal resistors are 47 000 Ohm, your parallel RCA plug resistors are lower (100 Ohm and 470 Ohm) for MC.

My modified JLTi has internal resistors of 500k Ohm, so i can use 100k Ohm or 47k Ohm with parallel RCA plug resistors for MM. This is the reason why i have RCA plug 47k resistors (you don't need it). 

You can’t use 100k Ohm, your limit is 47k Ohm when the RCA unplugged. Both values are relevant for MM only or for external SUT.

In your situation you can add 1000 Ohm, 10k Ohm or something like that.