| Model ID | U-1PXF |
| Form Factor | Floorstanding |
| Signal Path | Passive Hardware |
| Dimensions | 111.1 × 213.4 × 2621.9 cm (W × H × D) |
| Weight | 272lbs |
| Power | 117/220VAC, 50/60Hz, 2W |
| Frequency Response | 24Hz-Ultrasonics |
| Driver | 2350in² Electrostatic Diaphragm |
| Sensitivity | 89dB/W/m |
| Impedance (Nominal) | 8Ω |
| Horizontal Dispersion | 45° |
| Recommended Power | >50W |
| Power Handling | 600W |
| Finish | Black |
| MSRP (2017) | $45,190 |
| Connections | - Input · Binding Post (Universal)
|
| Controls | - Bass Level · Rotary Switch · 4 Positions in 3dB Steps
- Midrange Level · Rotary Switch · 4 Positions in 3dB Steps
- Treble Level · Rotary Pot
- DC Bias · Rotary Pot
|
| Notes | Incorporates Sound LAB's "Bass-Focus Technology" providing 6dB more dynamic headroom at lower frequencies.
Short-lived model renamed the Ultimate 745 by mid-2017. |
