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Zapco ST-4X DSP III 8-Channel DSP / 4-Channel SQ Class AB Amplifier
Features and Functions
- 4-channel, full-range, Class A/B
- Integrated 8-channel Digital Signal Processor (DSP)
- High and low pass filters, phase control, signal delay and 15-band parametric equalizer for each channel
- Optical digital input
- BT streaming: Bluetooth port for external aptX HD module (optional)
- Analog input gain control
Technical Specifications
- Power @ 4 Ω: 4 x 65 W
- Power @ 2 Ω: 4 x 90 W
- Bridged power @ 4 Ω: 2 x 180 W
- THD at rated power: < 0.5 %
- S/N ratio: > 90 dB
- THD + Noise: < 0.2 %
- Channel separation: > 60 dB
- Frequency response: 15 Hz – 30 kHz ±1 dB
- Dimensions (mm): 160 (W) x 57 (H) x 284 (L) / Overall: 160 (W) x 57 (H) x 309 (L)
HD-BT II-D Bluetooth module (optional)
The new Bluetooth module is much more than just an accessory. It allows you to control the amplifier with your smartphone for music streaming (with aptX HD quality) and to use apps for complete DSP adjustment and tuning.