ST-104D SQ III Compact 4-Channel Class D Amplifier
Overview & Key Features
The ST-104D SQ III is a space-saving, full-range Class D amplifier built for performance without the bulk. This 4-channel amp is perfect for tight installations while still delivering clean, reliable power. With both RCA and speaker-level inputs, it’s flexible enough for almost any system. Fine-tune your sound with variable input gain, adjustable crossovers, and bass boost control—all packed into a compact chassis built for serious sound quality.
Features
- 4-Channel Full-Range Class D Amplifier
- Accepts RCA & High-Level (Speaker) Inputs
- Adjustable Input Gain
- Variable Electronic Crossover
- Variable Bass Boost Control
Technical Specifications
- Power Output @ 4Ω: 4 x 100W RMS
- Power Output @ 2Ω: 4 x 150W RMS
- Bridged Power @ 4Ω: 2 x 300W RMS
- Total Harmonic Distortion (THD) @ Rated Power: < 0.5%
- THD + Noise: < 0.1%
- Signal-to-Noise Ratio: > 90 dB
- Frequency Response: 15 Hz – 30 kHz ±1 dB
- Input Sensitivity (Low-Level): 0.35V to 9V
- Dimensions (Net): 124mm (W) x 50mm (H) x 213mm (L)
- Dimensions (Overall): 124mm (W) x 50mm (H) x 242mm (L)
