ZAPCO ST-4B 4-Ch. Class AB Amplifier

Features and Functions

- 4-Channel, Class-AB Full Range Amplifier
- Stable into 4 ohms bridged or 2 ohms stereo load
- MOSFET power supply
- RCA and OEM speaker level input
- Variable Inputs Gain Control
- Variable FULL / LP / HP Electronic Crossover
- Variable Bass Boost

Technical Specifications

- Power @ 4Ω: 4 x 65 watts
- Power @ 2Ω: 4 x 90 watts
- Power @ 4Ω Bridged: 2 x 180 watts
- THD @ Rated Power < 0.2%
- Signal to Noise Ratio > 90dB
- Channel separation > 45dB
- Frequency Response 10Hz to 30,000Hz ±1dB
- Input Sensitivity .25v to 5v
- Net Dimensions (mm): 182(W) x 52(H) x 280(L)
- Overall Dimensions (mm): 182(W) x 52(H) x 310(L)