What does the 2nd power supply do to the sound of the EA-1200? very good question -
IMO based on my third night of listening, the answer is WOW - EVERYTHING
better bass weight, density, drive, slam, dynamics, depth, soundstage. There is more meat on the musical bones while it maintains it's incredible transparency. complex detailed multitrack recordings become easier to follow and the purity of the sound is better. The sound is almost relaxed - but the musical notes start and stop so quickly. This phono is just so quiet - it's spooky.
Overall, music is just easier to listen to and enjoy.
IMO the the 2nd power supply PS-1200 is not a nice to to have, its mandatory for the EA-1200 to sound it's best. The dual power supply is greater than the sum of it's parts.
I have the opportunity to have a listen to the T-2000 SUT at the end of the month - I am finding it difficult to imagine how the T-2000 will make better music
From Phasemation web site:
A strong clean power supply unit adopting a large power capacity R-core transformer and a directly-heated rectifier tube, 5U4G
1. The amplifier's rectification circuit uses an R-core power transformer with more than sufficient capacity than required, a luxurious rectification circuit with a 5U4G rectifier tube and two independent left and right choke coils. Furthermore, the power transformer and choke coil are magnetically shielded to provide a cleaner and more powerful power supply to the amplifier.
Doubling the ability of the power supply
By attaching the shorting connector of the accessories, two choke coils and two electrolytic capacitors, which were used independently for the left and right side of the EA-1200, are connected in parallel, and this lowers the output impedance of the power supply and greatly increases the capacity of the power supply.
you attach the shorting plug to the first power supply and new power supply and move the left or right umbilical cord to the new power supply - very easy.