The Ecler eHSA4-150 is a professional-grade 4-channel high impedance amplifier engineered to deliver powerful and reliable audio performance in commercial and installation environments. With an output of 4 x 150W at 100V, this amplifier is perfectly suited for distributed audio systems, such as those found in retail spaces, hotels, corporate buildings, educational institutions, and public venues.
Designed with energy efficiency and long-term reliability in mind, the eHSA4-150 features Class D amplification technology, ensuring low power consumption and reduced heat generation without compromising audio quality. Its high impedance design supports 100V line systems, allowing for longer speaker cable runs and the connection of multiple loudspeakers per channel, making it ideal for multi-zone sound installations.
FEATURES
- 4 mono balanced inputs (Euroblock terminals)
- 4 x 150 W RMS output (70/ 100V line level)
- Euroblock output connectors
- High efficiency, auto stand-by function and convection cooling (fanless, 100% silent)
- Thermal protection
- Overload protection
- Anti-clip system
- Volume control knobs on front panel
APPLICATIONS
- Single or multi-zone BGM and paging systems with 100V line speakers, combined with the DAM, MIMO and SAM / eSAM series preamplifiers / processors
SPECIFICATIONS
| Specification | Details |
|---|---|
| Output Power | 4 × 150 WRMS at 70V / 100V (≈145W per channel; ≈140W all channels) |
| Inputs | 4 mono balanced inputs via Euroblock connectors; Input sensitivity 0dB; impedance >20?kΩ (>10?kΩ unbalanced) |
| Outputs | 4 Euroblock outputs for 70V / 100V high-impedance speaker lines |
| Frequency Response | 20Hz – 30kHz (–1dB to –3dB) |
| High?Pass Filter | 50Hz, 3rd order Butterworth HPF |
| THD + Noise | <0.05% @ 1kHz at full power |
| Signal-to-Noise Ratio (SNR) | >85dB @1W/?Ω, 20Hz–20kHz |
| Crosstalk / CMRR | >55dB @ 1kHz crosstalk; CMRR >55dB |
| Damping Factor | >150 @ 1kHz into 8Ω |
| Efficiency & Cooling | ~80% efficiency @ max power; convection-cooled (fanless, silent); auto standby feature reduces idle power usage |
| Power Consumption | Idle: ~29?W; Standby: ~18?W; 1/8 power (pink noise): ~113?W / 130?VA; 1/3 power: ~268?W |
| Protection Features | Thermal protection; short?circuit and overload protection; anti?clip limiter; signal & protect LEDs per channel |
| Front?Panel Controls & Indicators | Volume knobs for each channel; LED indicators for power, signal, clipping, protection, standby |
| Operating Modes | Stereo / Mono selectable; operates at 70V or 100V line level; auto standby switchable; standby delay ~90s |
| Power Requirements | 100–240VAC, 50/60Hz; IEC connector; replaceable fuse included |
| Physical Dimensions (W×H×D) | 440 × 44 × 341mm (1RU rack mount, handle excluded) |
| Weight | Approx. 10.5kg |
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