Dear Rapogee,
Not sure about the DAC with the best Mid-range that you desire. You might want to concider a Space Tech Lab DA-64XT Super. Balanced Vacuum Tube Output Stage with Vacuum Tube Rectification. If that is not enough Musical and Melodic enough for you, you might want to concider an STR-104 Vacuum Tube Rectifier as an add on to the DA-64XT Super. This entire Unit plugs into, and replaces the Power Rectifying Tube on the DAC. Double the Musical, Melodic, Soundstage depth, Dynamics, Air, and Harmonic content. Can't say that it is the best, but worth a Hell of allot more than it costs!
Not sure about the DAC with the best Mid-range that you desire. You might want to concider a Space Tech Lab DA-64XT Super. Balanced Vacuum Tube Output Stage with Vacuum Tube Rectification. If that is not enough Musical and Melodic enough for you, you might want to concider an STR-104 Vacuum Tube Rectifier as an add on to the DA-64XT Super. This entire Unit plugs into, and replaces the Power Rectifying Tube on the DAC. Double the Musical, Melodic, Soundstage depth, Dynamics, Air, and Harmonic content. Can't say that it is the best, but worth a Hell of allot more than it costs!