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Amplifiers & Mixers

Amplifiers and mixers drive and shape a sound system. This page covers mixer-amplifiers and slave amplifiers for commercial sound installations and paging, stereo and multi-zone amplifiers for background music, high-power amplifiers for live sound, powered mixers, mixing consoles, DJ mixers and zoning mixers, plus in-wall and streaming amplifiers and induction loop amplifiers that help hearing aid users in public and commercial buildings.

Choosing Amplifiers & Mixers

Start with the speakers the amplifier will drive, because 100V line speakers and low-impedance speakers need different amplifiers.

Commercial PA

A mixer-amplifier combines inputs, playback and amplification in one unit. The Adastra 953.225UK RM-series model powers 100V line speakers or standard speakers down to a 4 Ohm load, with a DAB+/FM tuner, Bluetooth, a USB/SD player, 4 switchable 100V outputs and 24V emergency mute contacts. To add power, 100V slave amplifiers such as the Adastra 953.201UK RS series take line audio from a mixer or connect directly to an existing 100V speaker feed. The TOA VM-2240 feeds 5 switchable speaker zones for paging and background music.

Live sound and DJ

Power amplifiers drive low-impedance speakers for bands and events: the Citronic 172.106UK D-Series is a 1U Class-D amplifier with switchable parallel and bridge modes, and the Citronic 172.216UK PLX has output stable down to 2 Ohms. Powered mixers such as the Citronic 170.843UK CSP have an internal stereo power amplifier, and DJ mixers include the 2 channel Citronic 172.752UK PRO-2 MKII. Adastra supplies the most products in this range, and Citronic and QTX add live sound amplifiers and mixers.

Zones, background music and hearing loops

The Adastra 953.019UK zoning mixer sends 2 inputs to 5 stereo zones, in-wall amplifiers such as the Adastra 953.081UK fit cavity walls and ceilings and take Bluetooth, and the Adastra S260-WIFI streams music from a WiFi network. The Adastra 952.864UK induction loop amplifier drives a cable loop around a room to provide assisted listening for hearing aid users.

TypeExampleOutputNotes
100V mixer-amplifierAdastra 953.225UK240WDAB+, Bluetooth, 24V mute
100V slave amplifierAdastra 953.196UK60W100V input, fire alarm mute
Zone PA amplifierTOA VM-2240240 W5 speaker zones
Power amplifierCitronic 172.106UK2 x 300W RMSClass-D, 1U
Power amplifierQTX 172.052UK480W2U, fan cooled
Powered mixerCitronic FLITE-6002 x 300WUHF microphones, flight case
Induction loop amplifierAdastra 952.864UK300m² coverage3 mic/line channels

Related categories

Narrow the choice in power amplifiers, mixer amplifiers and mixers. This page is part of our audio visual range; pair it with speakers and microphones, or read our Help & Support guides.

Brands we stock in Amplifiers & Mixers

Adastra, Axis Communications, Bose Professional, Citronic, Clever Acoustics, Dynacord, Hikvision, JBL Professional, LEA Professional, Penton, QTX, Signet, TOA, Vanco and Zenith.

Frequently asked questions

What is a commercial amplifier?

A commercial amplifier runs a sound system in a business, school, church or public building for long hours at a time. Many drive 100V line speakers, so long cable runs can feed many speakers across several zones. Some add a mixer, a media player, paging inputs or mute contacts for a fire alarm panel. The range here includes mixer-amplifiers, slave amplifiers and zone amplifiers for paging and background music.

How do I choose an amplifier for a commercial sound system?

Choose the amplifier to suit the speakers first: a 100V line system needs a 100V amplifier, while low-impedance speakers need one matched to their load. Add up the speaker tap settings and allow some spare power. Then check how many zones you need, which microphone and music inputs are required, and whether the fire alarm should mute the system.

What is a networked audio amplifier?

A networked audio amplifier connects to a computer network, so it can be set up, monitored and controlled from software rather than front-panel knobs. Some also receive audio over the network using Dante. A network audio amplifier can turn a passive speaker into a network speaker. The range here includes network and smart amplifiers from Axis, LEA Professional and Dynacord.

What amplifier is suitable for a church?

A church usually needs an amplifier with several microphone inputs, so a mixer-amplifier or a mixer feeding a power amplifier often suits. Clear speech matters more than volume, and 100V line speakers can make it easier to cover a long nave. Many churches also have an induction loop amplifier for hearing aid users. The range here includes mixer-amplifiers and induction loop amplifiers.

What is an audio amplifier?

An audio amplifier takes a weak signal from a source such as a mixer, media player or tuner and boosts it so it can drive loudspeakers. Home hi-fi amplifiers suit a single room, while professional amplifiers are built for installed sound, paging and live events. The range here includes in-wall, streaming, zone and induction loop amplifiers alongside mixers.

  • Established 1975
  • Birmingham trade counter
  • UK-only supply

Written by the West Midlands Electrics technical team

Updated

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