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Zapco ST-204D SQ III 4 Channel Class D Amplifier 4x200w RMS
ST-204D SQ III
Sale price
£299.99
Regular price
£319.99
Save
£20.00
The Zapco ST-204D SQ III is a 4-channel, full-range Class D amplifier rated at 4×200W RMS, part of Zapco's ST SQ III range. It delivers over 1,000W total output in a compact finned aluminium chassis.
Key specifications
- Channels: 4, full range, Class D
- Power output: 4×200W RMS
- Bridged output: 580W RMS at 4Ω
- Total harmonic distortion: less than 0.5%
- Signal-to-noise ratio: approximately 90dB
- Efficiency: over 90%
- Chassis: finned aluminium with internal cooling fan (activates as needed)
ST-204D SQ III - 4-Channel Class D Sound Quality Amplifier
The ST-204D SQ III delivers competition-grade sound quality in a compact chassis. It is a full-range Class D amplifier with less than 0.5% total harmonic distortion and approximately 90dB signal-to-noise ratio, with over 90% Class D efficiency.
Bridged, the amplifier outputs 580W RMS at a 4Ω load — over 1,100W total from a compact unit. The finned aluminium chassis and only-when-needed internal fan manage heat when pushed hard.
Features
- 4-channel, full range, Class D
- RCA and speaker-level inputs
- Variable input gain control
- Variable electronic crossover
- Variable bass boost control
Specifications:
| Power @ 4Ω | 4 x 200 watts RMS |
|---|---|
| THD @ Rated Power | < 0.5%THD |
| Power @ 2Ω | 4 x 290 watts RMS |
| Power Bridged @ 4Ω | 2 x 580 W RMS |
| Signal to Noise Ratio | > 90dB |
| THD + Noise | < 0.1% |
| Frequency Response | 15Hz to 30KHz ±1dB |
| Input Sensitivity | .25v to 5v |
| Net Dimensions (mm) | 160(W) x 58(H) x 300(L) |
| Overall Dimensions (mm) | 160(W) x 58(H) x 325(L) |
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