Bill,
I thought hard about going with a Level 5 because of the dual mono power supply but since the PS on Level 4 seems to be overbuilt as it is,
we build a tubed power supply which is at least 400% oversized to provide the unheard of purity, authority and grunt.
and considering the DAC market is not yet mature, I decided to opt for the less expensive L4G4, which seems to be a fully evolved design for Lukasz. Once that was decided, I didn't see a need to change much else. My specs included;
1. Whatever rectifier Lukasz has found to be the best, in his opinion.
2. Additional USB input.
3. Change S/PDIF input from an RCA to a BNC type.
4. Duelund capacitors.
5. Black faceplate.
I decided it was not necessary to go with a balanced DAC. My preamp treats unbalanced and balanced input signals the same and then the signal is converted to balanced as it outputs through transformers.
I know you like the Jensens but I found the temptation to go with the Duelunds too great to pass up.
I will not know my rectifier options until I learn which tube Lukasz uses in my L4.
I am curious whether folks are rolling signal tubes in the L4. It is hard to find information on what is used and I couldn't find much on the Lampi site, but I understand he may be currently using NOS E182CC tubes, which are the same as CV5766, and perhaps 6N6P. I understand he previously may have used ECC40 tubes?
