• We had to decrease the capacitance of the mid-tweeter panel.
  For that, we developed a panel of four times less capacitance.
  Plus, these new generation panels are built with wires instead of perforated steel plates.
  This fact significantly increases the free open area percentage on the panels, enabling much more easy airflow true them.
  The wires, due to their better aerodynamic behavior, are enabling turbulence-free operation.
• Also in these new panels we use two times thinner Mylar foil, so with this, we doubled the high-frequency limit above 40KHz.
• We developed a double audio transformer, but still a crossovers system.
  We use a bigger transformer for bass panels, for a better low-frequency response.
  For the mid-tweeter panel, we use a separate smaller audio transformer, with extremely low parasitic capacitance.

• Four times higher impedance at high frequencies, 6.3Ohms at 20KHz. (Brilliance control at 1 position.)
• Four times higher impedance at low frequencies, 13Ohms at 20Hz. This is important because of the subsonic noises of the LP records.
• The high-frequency response is raised from 20KHz to 40KHz.
• The low-frequency response is lowered from 40Hz to 35Hz.
• We could add the brilliance control for fine-tuning in the highest frequency band.

• Now we have only two binding posts, the direct inputs.
• The tweeter panel Bias control becomes more refined.
• Because of the higher impedance, we don’t need the damping factor correction circuit anymore.
• The brilliance control is added for fine high-frequency adjustment, depending on the used audio system and to your taste.

With the new Soltanus Acoustics ESL Virtuoso MK II we have:

• Better high-frequency resolution
• Better low-frequency response
• You have no limitation in amplifier choosing because you don’t need a high damping factor or high current amplifiers.
• More fine-tuning options.

In summary, you can use most of your tube amplifiers, too.