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Product 634043

Allen & Heath PA 20-CP Powered Mixer

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The Allen & Heath PA 20-CP powered mixer gives you the tools you need to run a stereo PA system in a straightforward plug-and-play format. You'll qui...Click To Read More About This Product

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16 channels, big punch, and an amazing feature set.

The Allen & Heath PA 20-CP powered mixer gives you the tools you need to run a stereo PA system in a straightforward plug-and-play format. You'll quickly feel at home with a number of innovative touches based on many years of real-world experience. High-quality construction includes the same individual vertical circuit boards, nutted pots, and solid copper bus connections as the acclaimed ML series consoles. Experience the full, open, natural sound quality that has made Allen & Heath a respected name around the world.

2 x 500W RMS peak power professional class, fan-cooled, circuit-protected AB power amplifiers built in with same output into 4 or 8 ohms.

The Allen & Heath mixer has 16 mono channels with mic (XLR) and line (TRS) inputs (line input overrides the XLR input), individual +48V phantom power switches, and new padless 2-stage preamp with smooth gain law provide pristing sound quality. Line input goes to second stage for better matching and performance. Switched 100Hz high pass filter, insert point, 4-band EQ, 4 aux mixes, mute with LED, PFL button with LED (functions as peak indicator), plus 100mm fader on every channel.

Shelving LF (60Hz), and HF (12kHz) with fixed LM (250Hz), and swept HM (300Hz - 6kHz). The mixer's fixed 250Hz control has been carefully selected to provide reduction of muddy sounds and enhance warmth.

2 stereo channels with 2 unbalanced stereo inputs on each--one RCA and one TRS jack. Independent gain controls provide source mixing in the channel strip. The top inputs (RCA) can be switched direct to L&R instead of the channel strip providing extra returns. Each stereo channel features 2-band shelving EQ, 4 aux mixes, stereo balance, mute with LED, PFL with LED, and 100mm fader as mono channels.

The mixing console's auxiliary sends from all channels include 2 pre-fade for foldback mixes - these have 100mm fader masters, mute switch with LED, AFL with LED, and TRS outputs (which can be routed internally to output section). One post-fade aux mix for effects which feeds the internal effects and has a TRS jack output for external effects. One post-fade aux mix to a TRS jack output is provided for external effects or special feeds.

Main stereo mix output has 100mm fader control and mute with LED plus TRS jack outputs, mono sum output with level control and switch for subwoofer mode to TRS jack. Record output (RCA) analog and SPDIF switchable pre/post fader, plus twin 12-segment LED bar meters that show program (or PFL/AFL). Insert points on TRS jack for external processing as well as output EQ and routing to internal amplifiers/external systems are provided.

A 4-band semi-parametric EQ enhances the output section. This affects the TRS slave outputs and the internal constant power amplifiers, offering more control than graphic equalizers for precise management of speakers, especially foldback/monitors. Source selector allows output EQ section to be used on left/ right, L&R sum/foldback 1, or foldback1/foldback 2.

The Allen & Heath mixer's 16-program digital effects processor provides reverbs, delays, chorus, and others, including combinations. This FX module takes its feed from the post-fade FX aux on the mono and stereo channels. The output of the FX module is controlled by a 100mm fader with mute and PFL and is routed to the stereo mix and FB1&2 with post fade level controls. 2 TRS inputs with level control provide a way of combining external effects with the internal unit. The audio mixer's internal effects can be switched off to use external effects only if preferred. A footswitch TRS jack is provided to mute the effects channel. Editing of effects can be done via MIDI using the software editor available free from the resource CD or the Allen & Heath website.

Background music (BGM) mode plays 2 track input into the main mix post fader, allowing the user to pull down the fader (while patching, taking a break, or during walk-in) and leave music playing through the amplifiers/speakers. 2 track input (RCA) with level control to L&R feeds the headphone monitor selector (checking recording) while twin, 3-color 12-segment LED meters display active monitor source. Large LED indicates PFL/AFL active signal overrides L&R/2TRK monitor source selection. Standby switch uses relays to disconnect the speakers. 2 track output (RCA) analog + S/PDIF allows direct-to-digital recording. Switchable pre/post master L&R fader. Mono sum out with level (TRS) mode switch to provide sub feed with 100Hz low pass filter. Phones out (TRS) with level.

  • 16 mono channels with mic XLR and line TRS inputs
  • 2 x 500W RMS peak power professional class, fan-cooled, circuit-protected AB power amplifiers
  • Line input overrides the XLR input
  • 2 stereo channel inputs
  • Individual +48V phantom power switches are provided
  • Line input goes to second stage for better matching and performance
  • Switched 100Hz high pass filter
  • Insert point
  • 4 band EQ
  • 4 aux mixes
  • Mute with LED
  • PFL button with LED that functions as peak indicator
  • 100mm faders
  • 16-program digital FX processor provides reverbs, delays, chorus and others, including combined

An incredible value on a full-featured pro mixer. Get your act together--order now.

  • 0dBu = 0.775 Volts rms 0dBV = 1 Volt rms
  • Maximum output level: TRS +21dBu into 2k ohm load
  • Nominal output level: L-R +0dBu into 600ohm max load
  • Other o/p's +0dBu into 2kOhm max load
  • Internal headroom: Mix to o/p +21dB. Channels+21dB
  • Peak LEDs: 5dB before clipping
  • Noise: measured rms 22Hz to 22kHz
  • Mic EIN ref 150 ohm source -128dB
  • L-Residual <-89dBu (nothing routed)
    L-R mix <-85dBu (channels routed)
    Frequency response: 20Hz to 30kHz +/- 0.5dB
  • THD +10dbu, 1kHz
  • Channel to mix o/p <0.006%
    Crosstalk - 1kHz
  • Ch to ch <-90dB
    Chl mute shutoff<-95dB
    Ch fader shutoff <-95dB
    Power Amp
  • Output power Constant Power switchable
  • = 2 x 500w RMS into 4 ohm
  • = 2 x 500wRMS into 8 ohm
  • Frequency response THD+N <0.02%@1kHz
    MainsPower - Internal unit, linear regulated Internally wired to required country voltage
  • AC mains input 100V to 240V AC@50/60Hz
  • Power consumption 1600W max
  • Mains fuse rating: 100-120V AC use T10A 20mm, 220-240V AC use T8A 20mm
  • 28.9"W x 7"H x 21.2", 53 lbs.

Review Snapshot

by PowerReviews

(based on 6 reviews)

Ratings Distribution

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Reviewed by 6 customers

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Worth the money and the weight!

By Matthew Manuel

from Cedar Rapids, Ia

I spent months researching powered mixers and hands down, every forum I came across sound engineers raved about the Allen & Heath PA series. I have been playing for over twenty years and if I have learned anything it is to first trust your own ears and then experience. This mixer is simple, powerful, clean, rugged, sturdy and wonderful. The effects are perfect. The controls are well spaced and sturdy. The pres are magnificent. The power is superb. Read the manual before you use it. Easy read. I played a show the other night and used 14 channels for vocals and instruments..crystal clear sound and incredibly manageable. Excellent mixer.


All-in-one wonder for small/medium sized bands

By Joe-fJ-YV

from Columbia, MO

This board is perfect for bands who want to start gigging/touring and be self-sufficient. The amplifier in it delivers pristine, professional quality sound and the controls are a pleasure to work with. I do sound at two local music venues and the boards just don't stack up to the allen & heath. I couldn't believe how good, let alone customizable, this board was once I got it in my hands.

(0 of 1 customers found this review helpful)


This is the one!

By bwanagary-vKjSE

from Orlando FL, NYC, TN & Seattle WA

I have been in the role of musician, performer, songwriter and performer for over 30 years and used a broad range of equipment. This Allen & Heath PA CP-20 is a phenomenal piece of workmanship. Th quality is recording studio spec, and it has power to spare. It has great features, allowing you to use it in any way that you could imagine. I like the studio quality signal to noise, effects and the oh-so-well-thought-out layout and features. This thing is SOLID and heavily built, so they even thought of incorporating a large, robust and even comfortable handle to carry/move it with.Being a Dynacord fan in the early days for PA, this unit can stand proud amongst the very finest.And the price is unbeatable! This is the one. Get it!


plug n' play

By Lives to Play Live

from Tucson, AZ

If you want a board that you don't have to be an rocket scientist to run this is the one for you. It has tight responses with no channel cross-talk and an amplifier that can push more speakers than youy would ever think when you pick it up to carry. It has many of the features that their professional boards have, but without so much complicated switching. A smaller group looking to buy something that is compact, light, fast to set up, and pretty easy to figure out & run this is THE board to have. We used a Mackie before this one and I would go completely acoustic before I would go back to that old board. This mixer is sweet & also very beefy with great on-board effects. Allen & Heath have taken the Mix-Wizard platform and made it a plug n' play unit with awesome features & easy operation.


Great for most applications

By ZippySkippy

from Cleveland Ohio

I purchased this board on advice of a friend who also has a traveling band. This friend is an equipment freak - nothing but the biggest & best.However, I wanted something more compact, and to be honest, on a bit of a budget.He recommended this powered board, and I could NOT be happier. After a gig or two figuring everything out (no fault of the equipment!), I've dialed this thing in wonderfully.We power 2 to 4 JBL JRX125 speaker cabinets. Our gigs range from small halls with 50 people, to large outdoor venues....and this board marvelously handles each with ease.No shrill tones - no volume complaints, as everything comes out near-studio sounding.In almost four decades of performing live, I've never had so many compliments from fans & musicians alike on the sound of our PA.This one's sweet - if you're looking for way-above average performance from a lower-than average priced PA set up - you can't go wrong with this powered board.


Gigs or studio

By The Vandals

from Altamonte Springs, FL

See all my reviews

I love this thing. I sold my home recording mixer and my gig rack to by this and I can't believe how lucky I got. This thing pushes 3 monitors with 12", and 2 monitors with 15" like a dream. The effects are great and the best part is it's really user friendly. The knobs are tight and sensitive, so you can really ial in. I'm so happy. It will be a while before this one is replaced.

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