QSC SPA4-60 4-Channel Power Amplifier (60W)
- Energy Star Qualified
- Class-D Topology
- 4 and 8 Ohms + 70/100V Operation
- Bridgeable Outputs for Higher Power
Crown Audio XLi 2500 Stereo Power Amplifier
- 750W per Channel at 4 Ohms
- 500W per Channel at 8 Ohms
- 1500W at 8 Ohms Bridged Mono
- Stereo/Parallel/Bridge-Mono Mode
Other Buying Options
Crown Audio XLi 1500 Stereo Power Amplifier
- 450W per Channel at 4 Ohms
- 330W per Channel at 8 Ohms
- 900W at 8 Ohms Bridged Mono
- Stereo/Parallel/Bridge-Mono Mode
Other Buying Options
Crown Audio XLi 800 Stereo Power Amplifier
- 300W per Channel at 4 Ohms
- 200W per Channel at 8 Ohms
- 600W at 8 Ohms Bridged Mono
- Stereo/Parallel/Bridge-Mono Mode
Samson Servo 120a Power Amplifier
- Stereo or Bridged Mono Operation
- For Recording/Live Performance/Installs
- 50W per Channel into 8 Ohms
- Stable Bipolar Circuit Design
QSC GX5 500-Watt 8-Ohm Power Amplifier
- Optimized for 4- and 8-Ohm Speakers
- XLR, 1/4" TRS, and Phono Inputs
- speakON Combo Outputs
- Subwoofer/Satellite Crossover Built In
Bogen PS240 Platinum Series 240W Public Address Amplifier
- 240W RMS Power Rating
- Supports 8-Ohm or 25/70V Operation
- 4 x XLR Mic Inputs with Phantom Power
- 2 x Euroblock Mic In, 2 x Aux In
Other Buying Options
Pyle Pro PTA1000 Professional Stereo Power Amplifier (250W/Channel @ 8 Ohms)
- Rackmount Design
- Stereo and Bridged Modes
- XLR and 1/4" Inputs
- speakON and Binding Post Outputs
QSC RMX1450a Low-Z Power Amplifier (500 W per Channel)
- 500 Watts per Channel 4Ω
- 1400 Watt Bridgeable Mono Mode 4Ω
- LED Indicators for Power, Signal, Clip
- Built-In Protection Circuits
Crown Audio XLi 3500 Stereo Power Amplifier
- 1350W per Channel at 4 Ohms
- 1000W per Channel at 8 Ohms
- 2700W at 8 Ohms Bridged Mono
- Stereo/Parallel/Bridge-Mono Mode
QSC GXD 8 Professional 4500W Power Amplifier with DSP
- 4500W Max Power Output
- Matched for 4 Ohm and 8 Ohm Speakers
- Efficient Class-D Power Amplifier
- Built-In DSP Speaker Processor
ART SLA-1 100W 2-Channel Amplifier
- Studio Linear Amplifier
- Low Noise, Discrete Linear Design
- 100W per Channel (8 Ohms)
- 260W Bridged Mono (8 Ohms)
Other Buying Options
Crown Audio XLS 1502 Stereo Power Amplifier (525W at 4 Ohm)
- 525W at 4 Ohm Per Channel
- Band Pass Filter Per Channel
- Selectable Input Sensitivity
- Security Settings Disables Menu Buttons
QSC SPA2-200 2-Channel Power Amplifier (200W)
- Energy Star Qualified
- Class-D Topology
- 4 and 8 Ohms + 70/100V Operation
- Bridgeable Outputs for Higher Power
Other Buying Options
Crown Audio XLS 1002 Stereo Power Amplifier (350W at 4 Ohm)
- 350W at 4 Ohm Per Channel
- Band Pass Filter Per Channel
- Selectable Input Sensitivity
- Security Settings Disables Menu Buttons
QSC GXD 4 Professional 1600W Power Amplifier with DSP
- 1600W Max Power Output
- Matched for 4 Ohm and 8 Ohm Speakers
- Efficient Class-D Power Amplifier
- Built-In DSP Speaker Processor
AtlasIED DPA602 602 Networkable Multi-Channel Power Amplifier
- 600W into 70V, 100V & 4 Ohms
- Multi-Channel Operation
- Network-Based for Remote Monitoring
- Foreground / Background & User Paging
- This item is noncancelable and nonreturnable.
Crown Audio DCi 8|300 DriveCore Install Analog Series 8-Channel Amplifier 300W x 8
- 300W Per Channel
- Rackmountable
- Channel-Independent Hi-Z or Low-Z Output
- Bridgeable Channel Pairs
Other Buying Options
Pyle Pro PTA1000BT Professional Stereo Power Amplifier with Bluetooth (500W/Channel @ 8 Ohms)
- Rackmount Design
- Stereo and Bridged Modes
- XLR, 1/4" & Bluetooth Inputs
- USB Port and SD Card Slot
Pyle Pro PT8000CH 8-Channel Stereo/Mono Amplifier
- Rackmount Design
- 8 Stereo and 4 Bridge Channels
- Independent Level Controls
- Protection Circuitry
AtlasIED DPA-102PM Networkable 2-Channel Power Amplifier with DSP
- Class-D Amplifier Technology: 2 x 100W
- Fully Configurable DSP Signal Processing
- No Computer Required to Use
- iPhone, iPad, Android Compatible
QSC GX3 300-Watt 8-Ohm Power Amplifier
- Optimized for 4- and 8-Ohm Speakers
- XLR, 1/4" TRS, and Phono Inputs
- speakON Combo Outputs
- Subwoofer/Satellite Crossover Built In
Other Buying Options
Bogen PS60 Platinum Series 60W Public Address Amplifier
- 60W RMS Power Rating
- Supports 8-Ohm or 25/70V Operation
- 4 x XLR Mic Inputs with Phantom Power
- 2 x Euroblock Mic In, 2 x Aux In
Yamaha PX3 Stereo Power Amplifier (300W at 8 Ohms)
- 300W per Channel at 8 Ohms
- Efficient Class-D Amplifier
- Custom LSI Chip with PLL Technology
- Power Boost Mode
Crown Audio XLS 2002 Stereo Power Amplifier (650W at 4 Ohm)
- 650W at 4 Ohm Per Channel
- Band Pass Filter Per Channel
- Selectable Input Sensitivity
- Security Settings Disables Menu Buttons
QSC RMX850a Power Amplifier (300 W per Channel)
- 300 Watts per Channel 4Ω
- 830 Watt Bridgeable Mono Mode 4Ω
- LED Indicators for Power, Signal, Clip
- Built-In Protection Circuits
Crown Audio XLS 2502 Stereo Power Amplifier (775W at 4 Ohm)
- 775W at 4 Ohm Per Channel
- Band Pass Filter Per Channel
- Selectable Input Sensitivity
- Security Settings Disables Menu Buttons
Yamaha PX5 Stereo Power Amplifier (500W at 8 Ohms)
- 500W per Channel at 8 Ohms
- Efficient Class-D Amplifier
- Custom LSI Chip with PLL Technology
- Power Boost Mode
Learning About Power Amplifiers
Power amplifiers are essential for raising the magnitude of a given input signal to produce the best audio quality. These signals increase to a level that can drive a high amount of audio output to devices such as speakers, RF transmitters, and headphones.
Choosing the Right Amplifier Power
Louder speakers and larger rooms require more power. Both speakers and amps come in a range of power ratings that measure how much power they can churn out. For amps, look out for the RMS power ratings, and for your speakers, check the program power ratings. As a rule of thumb, choose a power amp that can deliver power that's twice the speaker's program power rating. For instance, a live sound guitar speaker with a program power rating of 350 watts requires guitar amplifiers that can produce up to 700 watts of power.
What to Consider in a Power Amp
For crisp and clear audio, getting the right amp for your particular speaker is imperative. Besides the power, look out for a number of other factors.
Channels
You can shop for power sound amplifiers according to the number of channels of your speaker setup. They're available from 1 to 12-channel amps. 8-channel amplifiers are popular with many consumers, as they're optimized for 4 and 8-ohm speakers and come with built-in subwoofer/satellite crossovers that help improve the audio quality.
Headroom
The headroom is the difference between an amplifier's operating level and the maximum level it can pass without any distortion. Since music has wide variations of dynamic range, you'll have frequent power distortion if your amp doesn't have enough headroom. Thus, shop for amplifiers with extra headroom for clean power output. You may also want to go for audio distribution amplifiers to stabilize the signals within the sound system components.
Input/Output Connections
Most stereo power amplifiers come with XLR connectors, but there are multiple connection options available, such as TRS, 1/4-inch, and RCA inputs. Balanced connectors such as XLR cables are more suitable with long cable runs. For shorter cable length applications like home audio, DJ systems, and connections to live sound mixers, RCA connectors are ideal.
Browse B&H Photo and Video's wide variety of rack mount amplifiers and related products, such as headphone amplifiers, to find the right ones for your needs. Choose from a range of amplifier brands, including Bose, QSC, Crown Audio, Pyle Pro, and Yamaha.