QSC SPA4-60 – 4-Channel 60W EnergyStar Commercial Power Amplifier

Product Overview

The QSC SPA4-60 is a four-channel commercial power amplifier delivering 60 watts per channel, built for small to medium multi-zone distributed audio installations. Its convection-cooled, fanless design and half-rack 1U chassis make it ideal for installations where rack space is limited and mechanical noise is unacceptable. Each channel supports Low-Z (4 Ω/8 Ω) and 70 V/100 V distributed loads, and outputs can be bridged for higher power. ENERGY STAR qualified, the SPA4-60 accepts standard analog line input from a zone mixer or DSP.

Product Description

The SPA Series uses an advanced Class-D design with a universal switchmode power supply, making the amplifiers efficient enough to run without active cooling. ENERGY STAR auto-ramp circuitry provides quiet, fast startup from standby and a seamless power-down after 25 minutes of inactivity, reducing operating cost. The SPA4-60 provides four channels of 60 watts into 4 Ω and 8 Ω; bridging a channel pair yields up to 100 watts into low impedance and up to 125 watts into 70 V or 100 V, with an 80 Hz high-pass filter available in bridged distributed modes. Per-channel controls select 4 Ω/8 Ω or 70 V/100 V operation, and rms and thermal limiting plus over-current and short-circuit protection allow confident deployment. The included mounting kit supports rack mounting alone or with a second unit in 1RU, as well as under-table and wall mounting, and an optional Plenum Kit allows plenum installation. For higher per-channel power, see the SPA4-100.

Key Features

• Four channels at 60 W — 60 watts per channel into 4 Ω and 8 Ω for multi-zone distributed audio.
• Low-Z and 70V/100V support — Per-channel selection of low-impedance or distributed operation.
• Bridgeable outputs — Up to 100 W into low impedance and 125 W into 70V/100V per bridged pair.
• ENERGY STAR, convection-cooled — Efficient Class-D design runs fanless with no mechanical noise.
• Auto-ramp standby — Quiet startup and seamless power-down after 25 minutes of inactivity.
• Comprehensive protection — RMS and thermal limiting plus over-current and short-circuit protection.
• Flexible mounting — Half-rack 1U chassis for rack, under-table, wall, or (with kit) plenum installation.

Typical Applications

• Commercial meeting space — Four background-music or paging zones from one chassis.
• Conference room — Fanless amplification where mechanical noise must be avoided.
• Multi-purpose room — Mixed low-impedance and distributed speaker drive.
• Training room — Compact, energy-efficient zone amplification.
• House of worship — Distributed audio for corridors and ancillary spaces.

Technical Specifications

Frequently Asked Questions

Is the SPA4-60 a Q-SYS amplifier?
No. It is a non-networked amplifier that accepts standard analog line-level input from a zone mixer or DSP, making it well suited to simple distributed audio systems.

Does it need active cooling?
No. Its efficient Class-D design is convection cooled and fanless, so there is no fan noise — ideal for quiet rooms.

Can the outputs be bridged?
Yes. A bridged channel pair delivers up to 100 W into low impedance and up to 125 W into 70 V or 100 V.

How is it mounted?
The included kit supports 1RU rack mounting (alone or paired), under-table, and wall mounting; an optional Plenum Kit allows plenum installation.

What about warranty and support?
Refer to QSC warranty terms for coverage. For configuration and purchasing questions, contact Creation Networks support.