Mark Levinson 380S


I'm sure I'm going to feel like an idiot when I get the answer, but here goes . . .

I just picked up a a 380S Preamp. I have chosen an input for my turntable and named that input PH 4. However, when I set Mode to Monitor, the display reads PH 4 OFF, and I am getting no signal. For the life of me, I can't figure out how to change this to PH 4 ON, or just PH 4. There is no mention of OFF being a setting in the Monitor mode. (FYI, the turntable is feeding into a ML PLS226 Power Supply & 25S Preamp, and the 380S is feeding a ML 333 Amp.)

Any ideas?

levima

Have you tried just turning up the volume?

Certainly! There is no signal going to the amp, no noise of any sort. It seems to me that OFF means that the input is not inputting. How do I turn OFF off?

Presumably you have seen it, but if not, here’s a link to the manual:

https://www.marklevinson.com/on/demandware.static/-/Sites-ML-US-NCOM-Library/default/dw87841a8d/glp/support/downloads/No380S/Mark-Levinson-No380s-Manual.pdf

 

The record outputs may be disconnected (or “defeated”) by pressing the input selector button of the currently selected (to-be-recorded) input a second time. Doing so will toggle the record outputs on and off. The display will alternatively read the name of the chosen input and RECD OFF as shown below.

Defeating the record outputs eliminates even the possibility that the input im- pedance of a recording device could have an effect on the sound quality of the preamplifier. We recommend that record outputs be turned OFF when not in use.

Thanks, I do have the manual, but appreciate your link. However, this simply prevents the designated input from sending a signal to the recording outputs. This has nothing to do with sending the signal to the amp & speakers.

It isn't RECD OFF that is the issue (which is indeed displayed when I go into Record Select Mode), but PH 4 OFF (which is displayed in Monitor Mode.) As the instructions say, RECD OFF should be in effect if you simply wish to listen to a signal and not record it.

It isn't RECD OFF that is the issue (which is indeed displayed when I go into Record Select Mode), but PH 4 OFF (which is displayed in Monitor Mode.)

Yes, I appreciate that, but was wondering whether the same basic sequence of button pushing might also toggle PH 4 ON and OFF.

On my unit if you turn the volume all the way down for any input the display indicates OFF (same is true when first turning it on).  Turning the volume up increases it.  If turning the volume up does not increase volume then you may have a software glitch.  Try rebooting the preamp (volume is under digital control).  If it still doesn't work you have some kind of hardware or software failure.

Didn't work - looks like a service call. Thanks to all for your help!

Are you sure that your 380S has a built-in phonopreamp ?