Isophase
| Brand | Pickering |
| Function | Speaker (Electrostatic) |
| Produced | 1955-1958 |
| Form Factor | Floorstanding / Stand Mounted |
| Signal Path | Analog Hardware |
| Dimensions | 91.4 × 71.1 × 21.6 cm (W × H × D) |
| Power | 120VAC, 60Hz 10W |
| Frequency Response | 200Hz-35kHz |
| Treble | Push-Pull Electrostatic |
| Midrange/Bass | Push-Pull Electrostatic |
| Impedance (Nominal) | 8Ω |
| Crossover Frequency | 500Hz |
| Crossover Network | Pickering 401E Divider |
| Input Capacitance | 12.25µF |
| Polarizing Voltage | 1.5kVDC |
| Tube Complement | 1V2 |
| Power Handling | 50W |