Strange problem in the high stack
The stack has recently been upgraded to a high stack, by adding a Modius (replacing a Mobi MB OG) and a Lokius (to allow EQ and easy selection between digital and analog). This has removed one Sys for input selection and another Sys for amplifier selection from the system.
The digital chain is now CD via coax and Raspberry Pi via USB to Modius. Balanced from Modius to Lokius. Balanced from Lokius to Midgard and SE from Lokius to Valhalla 2.
The analog chain is TT to Mani (outside the image), SE from Mani to Lokius, Balanced from Lokius to Midgard and SE from Lokius to Valhalla 2.
By this I can select between digital and analogue sources with the input selector on the Lokius and use the desired amp by just plugging the headphones to one or the other.
When Lokius is in active mode everything is OK - with both inputs and both amplifiers.
When Lokius is in bypass mode using the SE input everything is OK on both amps.
When Lokius is in bypass mode, using the balanced input, the left channel is very weak and distorted on both amps.
When Lokius is in bypass mode, using the SE input, everything is OK on both amps.
When bypassing Lokius - going both balanced and SE directly from Modius to Midgard everything is OK.
So to summarize: the balanced input of Lokius has got a problem in bypass mode (with Lokius powered up).
Anyone seen this before?