Gentlemen,
I love my Transporter. It has taken a bit of work but its finally at a point I can enjoy its convenience. I chose not to mod it. IMHO its probably worthwhile but I chose to "tweek" the sound. I chose a highly shielded power cord that improved its performance and made sure its isolated with the right material, and thats critical. Purchased a power strip that has built-in AC noise conditioning. The key was adding Alan Mayer design Power Reference II on the main AC outlet along with the surprising tweek that should get the Audio steal of the century, the DIY filter.
Final analysis, its a keeper until I decide on which DAC to try. This discussion is highly appreciated and all opinions good or bad are welcome. Dynamics is never a problem with this player as much as refinement.
The sound improves as you lower the volume. I do my critical listening at 4:30am in the morning so very little AC noise, neighbor noise, TV or other incendiary distractions to chew on.
Note: Red Wine Audio Signature 30.2 Battery power supply
Grover IC SC (patented emi/rfi shield
95db efficient speaker ..So noise is not tolerated AC or otherwise.
Alan Maher design AC filtering treatments and custom design isolation for the Transporter.
Luis