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

Name: QSC SPA4-60 – 4-Channel Power Amplifier, 60W per Channel (Low-Z)
SKU: 4928
Availability: InStock

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