| Country | Great Britain (UK) |
|---|---|
| Manufacturer | Acoustical Manufacturing Co. Ltd, The; Huntingdon |
| Brand | Quad |
| Model | QUAD Control Unit 22 - Acoustical Manufacturing Co. |
| Year: 1958 | Audio Amplifier |
| Valves | 4: EF86 EF86 ECC83 ECC83 |
| Technology | Audio-Amplification |
| Wave Bands | - without |
| Power Type | Alternating Current supply (AC) |
| Dimensions | 267 x 89 x 165 mm / 10.5 x 3.5 x 6.5 inch |
| Net Weight | 3.2 kg / 7 lb 0.8 oz (7.048 lb) |
| Initial Price | 517.00 DM |
| Source | MyFile: Quad_Acoustical-22-1958.ControlUnit.pdf |
| Type | Configuration | Year | Base | Equivalents |
|---|---|---|---|---|
| EF86 | Pentode | 1953 | B9A | 6267 6BK8 6F22 CV2901 Z729 |
| EF86 | Pentode | 1953 | B9A | 6267 6BK8 6F22 CV2901 Z729 |
| ECC83 | Double Triode | 1954 | B9A | 12AX7 12DT7 6L13 B339 CV492 E2164 E813CC |
| ECC83 | Double Triode | 1954 | B9A | 12AX7 12DT7 6L13 B339 CV492 E2164 E813CC |