I hope someone can help with this. I just picked up a used Master 11 and ran into an oddity.
My chain (before adding the Master 11) was:
NUC PC ==> Singxer SU-1 ==> Oppo Sonica DAC & Gumby ==> Hattor mini passive preamp ==> Liquid Platinum & DSHA-3F. The Hattor has 2 balanced & 1 SE input, and 2 balanced outputs.
I added the Master 11, I2S from SU-1 to Input 5 -- no problem as I started listening to my HE-6se. Then I thought, how about comparing my DACs to the Master 11 internal DAC? Moved one preamp output to Input 7 (from the LP balanced in). Still no problem.
But then, I tried comparing:
SU-1 ==> Gumby ==> Hattor ==> DSHA-3F
to
SU-1 ==> Master 11 (I2S into IN-5)
and when I switched the input on the Master 11 to IN-5, no sound out of the DSHA-3F. If I unplug the output from the Hattor into IN-7, then sound comes out of the other amp (doesn't matter if it's the DSHA or the LP). But if the Hattor is plugged into IN-7, and the Master 11 is using another input, switched to an input with nothing connected, or even turned off, then nothing from the other amp. Also, if only one channel is plugged in, the other channel works normally.
Note that this behavior is new. Both outputs from the Hattor are active no matter what if the LP & DSHA are both plugged in, even if I switch to the SE input on the LP -- DSHA has only one (balanced) input, or if one of the amps is off.
So what the heck is going on?
Wish there was a manual for the Master 11.
I'm reaching out to Hattor as well as asking here.