This is a product manual for the KB2/KB3 keyboard amplifier
This manual begins with extensive safety warnings, emphasizing that the unit contains dangerous voltage, must not be opened, and that all servicing should be performed by qualified personnel. It also outlines basic cautions for installation and use, such as keeping the unit dry, protecting ventilation, and using the correct grounded plug.
The guide then walks the user through connecting power, configuring the front‑panel controls, linking the keyboard inputs, and adjusting EQ and master levels. Technical specifications for the pre‑amp and power amp sections are listed, followed by warranty terms and service contact information.
| Input Impedance (Channels 1‑2) | 100 kΩ |
|---|---|
| Nominal Input Level (Channels 1‑2) | 6 dBV (2 V RMS) |
| Minimum Input Level (Channels 1‑2) | -10 dBV (316 mV RMS) |
| Power Rating (KB3) | 80 W RMS / 4 Ω or 60 W RMS / 8 Ω |
| Output Level (Main Output) | 18 dBV |
The amplifier has four channels, as noted in the feature list.
The KB3 delivers 80 W RMS into 4 Ω or 60 W RMS into 8 Ω.
The unit uses a standard IEC power connector.