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QSC SPA4-60 – 4-Channel Power Amplifier, 60W per Channel (Low-Z)

1/2 RU 4 Channel ENERGY STAR amplifier / Multichannel operation 60 watts into 8 Ω & 4 Ω, Bridged pair operation 200 watts into 8Ω & 4Ω, and 250 watts into 70v and 100v / 100-240 VAC Operation.

The QSC SPA4-60 is a high-efficiency, compact 4-channel amplifier designed for low-impedance commercial AV systems. With 60 watts per channel at 4 or 8 ohms, it’s ideal for powering multiple speakers in conference rooms, classrooms, hospitality venues, and retail environments.

Featuring Class-D amplifier technology, the SPA4-60 ensures efficient, low-heat, and fanless silent operation, making it suitable for noise-sensitive applications. The half-rack chassis design supports flexible installation options, including rack-mount or wall-mount with optional accessories.

The amplifier supports bridge mode, allowing channels to be combined for higher output—up to 120 watts per bridged pair. It also features energy-saving auto-standby mode, reducing power consumption when audio is not present.

Built to QSC’s professional standards, the SPA4-60 offers long-term reliability, making it a strong choice for scalable commercial installations needing clean audio amplification in a space-saving form.

Specifications

Specification Details
Channels 4
Power Output (per Channel) 60 W RMS into 4 Ω or 8 Ω 
Bridged Output (per Pair) 200 W into 4 Ω/8 Ω; 250 W into 70 V or 100 V
Amplifier Class Class‑D, efficient and energy-conserving 
Frequency Response 20 Hz – 20 kHz ±0.1 dB 
Signal-to-Noise Ratio >100 dB (A‑weighted)
Input Sensitivity 1.23 V RMS (+4 dBu)
Input Impedance >10 kΩ (balanced/unbalanced) 
Maximum Input Level +24 dBu / 12.3 V 
High‑pass Filter Switchable 80 Hz in bridged 70 V/100 V mode 
Cooling System Convection-cooled (fanless) 
Rack Size 1 RU, half-rack width (43 × 220 × 241 mm) 
Weight (Net / Shipping) ~1.6 kg (3.5 lb) / ~2.3 kg (6 lb) 
Agency Approvals UL, CE, Energy Star, RoHS/WEEE, FCC Class B, UL 2043 with plenum kit 

Features

  • ENERGY STAR-certified Class‑D amplifier with exceptionally low power draw

  • Auto‑Ramp circuitry enables silent, fast power-up and auto-shutdown after ~25–28 minutes inactivity

  • Supports both Low‑Z (4 Ω/8 Ω) and High‑Z (70 V/100 V) output configurations

  • Bridgeable channel pairs deliver up to 200 W into Low‑Z or 250 W into High‑Z

  • Passive, fanless convection cooling for whisper-quiet operation

  • Compact 1 U half-width chassis with included rack, wall, or under‑table mounting hardware

  • Built-in protection: thermal, short-circuit, overload, over/under-voltage safeguards

  • Independent DIP-switch control per channel pair for mode and filtering settings

  • Front-panel LEDs monitor power, signal, limit, and protect status

What’s in the Box ?

  • QSC SPA4‑60 4‑Channel Power Amplifier

  • AC Power Cord

  • Connector Pack (Euroblock inputs/outputs, remote)

  • Rack-mount ears and installation brackets

  • Quick-start guide, safety documentation, and 3-year limited warranty card

Additional Resources

Spec-Sheet :

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