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QSC SPA4-100 4-Channel Power Amplifier (100W)

BH #QSSPA4100 • MFR #SPA4-100
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QSC SPA4-100 4-Channel Power Amplifier (100W)
Key Features
  • Energy Star Qualified
  • Class-D Topology
  • 4 and 8 Ohms + 70/100V Operation
  • Bridgeable Outputs for Higher Power
The highly flexible QSC SPA4-100 4-Channel Power Amplifier is an advanced Class-D amplifier with Energy Star rated efficiency well suited for smaller installations including meeting rooms or BGM zones. The convection cooled amplifier is designed to conserve energy. An auto-ramp circuit ensures quiet and fast power up from standby when a signal is present and seamless power-down following 25 minutes of inactivity, dramatically reducing power consumption.
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QSC SPA Overview

The highly flexible QSC SPA4-100 4-Channel Power Amplifier is an advanced Class-D amplifier with Energy Star rated efficiency well suited for smaller installations including meeting rooms or BGM zones. The convection cooled amplifier is designed to conserve energy. An auto-ramp circuit ensures quiet and fast power up from standby when a signal is present and seamless power-down following 25 minutes of inactivity, dramatically reducing power consumption.

The rear panel utilizes Euroblock connectors for inputs and outputs as well as remote inputs. Each channel of the SPA4 provides 100W of power, while the bridge mode provides 200W into 4 or 8 ohms and 175W into 70/100V.

  • Provides up to 100W per channel into Low-Z loads at 4 and 8 Ohms
  • Energy Star qualified SPA Series employ an efficient class-D design to conserve energy and reduce operational cost
  • Delivers up to 175W into 70/100V when bridged
  • Rack-mountable 1 RU, half-rack width enclosure—the SPA Series can be mounted in 1 RU, 1/2 rack space, and their clever joining brackets enable easy under table and wall mounting
UPC: 684284068545

QSC SPA Specs

Key Specs
Number of Channels
4
Amplifier Power Rating
100 W per Channel
200 W Bridged
Load Impedance / Voltage
4 / 8 Ohms
70 / 100 V
Analog Audio I/O
1x Block 10-Pin Line Input
1x Block 10-Pin Line Input
2x Block 4-Pin Speaker Output
Digital I/O
No
Network I/O
No
Rackmount Size
1 U (with Included Hardware)
Amplifier
Number of Channels
4
Amplifier Power Rating
100 W per Channel
200 W Bridged
Amplifier Class
Class-D
Load Impedance / Voltage
4 / 8 Ohms
70 / 100 V
Performance
Frequency Response
20 Hz to 20 kHz ±0.1 dB (4 Ohms, 8 Ohms)
Input Sensitivity
1.23 V / +4 dBu
Input Impedance
>10 Kilohms (Balanced/Unbalanced)
Max Gain
27 dB (at 8 Ohms)
Max Input Level
+24 dBu / 12.3 V
SNR
> 100 dB
Signal Processing
EQ
No
Filters
1x High-Pass:
80 Hz
Ducking/Muting
No
Connectivity
Analog Audio I/O
1x Block 10-Pin Line Input
1x Block 10-Pin Line Input
2x Block 4-Pin Speaker Output
Digital I/O
No
Network I/O
No
USB I/O
No
Mobile App Compatible
No
Wireless
No
Power
AC Input Power
100 to 240 VAC, 50 / 60 Hz
AC Power Connector
1x IEC 15 A / NEMA 5-15
Physical
Display & Indicators
Front Panel:
LED (Power/Protect/Signal)
Rear Panel:
LED (Limit/Protect/Signal, per Channel)
Rackmount Size
1 U (with Included Hardware)
Cooling
Convection
Certifications
CE, ENERGY STAR, FCC, RoHS, UL, WEEE
Dimensions
9.5 x 1.8 x 8.7" / 241.3 x 45.7 x 221.0 mm
Weight
4 lb / 1.8 kg
Packaging Info
Package Weight
7.02 lb
Box Dimensions (LxWxH)
15.4 x 11.4 x 3.4"

QSC SPA Reviews

Just what I needed

By Frank
Rated 5 out of 5
Date: 2020-11-05

A small, light, quiet, transparent amplifier with 4 channels (2 stereo pair for me) to solve a problem in my home studio. I drive a pair of Yamaha NS-10M and a pair of UREI 809s (yeah, old school) and use the volume controls to switch between them when monitoring my work. Plenty of power for my control room (remember, it's a home installation). A little pricey but I trust QSC and they delivered. They worked as advertised, the documentation was great, no problems. I did consider ditching the speakers and getting a pair of powered monitors, but I am used to listening to these and they haven't let me down yet.

See any errors on this page?

Can two amps be joined together to fit in a 1RU ...

Can two amps be joined together to fit in a 1RU rack space with the included hardware?
Asked by: Scott
Yes, two of the QSC SPA2-60 2-Channel Power Amplifier (60W) can be mounted side by side in one rack space. Installation instructions for this configuration can be found in the installation guide here: https://bhpho.to/4aKF5J4
Answered by: Calvin M
Date published: 2024-04-10
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