Results in Pro Audio Amplifiers

1-25 of 6,616

  • Rocket 40W RMS Acoustic Guitar Amplifier

    Rocket 40W RMS Acoustic Guitar Amplifier

    Rocket 40W RMS Acoustic Guitar Amplifier An excellent choice for small gigs, practising at home or jamming with friends. With a lovely 'old school' look, the cabinet is both robust and hardwearing. XLR input for plugging in your microphone and singing along (independant volume controls for the right balance of guitar and voice).
    £72.00
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    RRP Previous price£152.00
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  • Orange Micro Terror - 20 Watt - Guitar Amplifier Head

    Orange Micro Terror - 20 Watt - Guitar Amplifier Head

    Guitar Care. Guitar Amplifiers. Guitar Accessories. Guitar Cables. Guitar Picks. Guitar Straps. Guitar and Bass FX. Orange Amplification launched the Micro Terror at Winter NAMM 2012 – our smallest Terror ever!
    £99.00
    Estimated delivery dateEst. delivery Mon, Dec 5
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  • blackstar

    blackstar

    Blackstar 4 x 8 cab. THIS IS A COLLECTION ONLY. Grab yourself a bargain.
    £50.00
    1 bid
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    Ending Today at 1:07AM GMT
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  • Marshall 2525H 20W Mini Jubilee Amplifier Head

    Marshall 2525H 20W Mini Jubilee Amplifier Head

    This contemporary ‘mini’ take on the Jubilee Series features: an ECC83 & EL34 valve-set, High/Low output switching, (20 Watt to 5 Watt), FX Loop and independent 4/8/16 Ohm speaker outputs. In keeping with classic Jubilee tone, Mini Jubilee features preamp circuitry taken from the 2555X which was launched in 2015 and made using the original diagrams.
    £595.00
    Available for Best Offeror Best Offer
    £40.00 postage
  • marshall 400w 4x10 bass cab

    marshall 400w 4x10 bass cab

    £120.00
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    £0.00 postage
  • Laney BC120 Vintage amplifier

    Laney BC120 Vintage amplifier

    £10.00
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    Ending Today at 5:52PM GMT
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  • Ashdown MAG 300 amp and cab

    Ashdown MAG 300 amp and cab

    Ashdown MAG 300 bass amp and Ashdown 210T Deep Cab for sale. Would make a great practice space amp or small gigging amp if you're just starting out and can't afford to spend a fortune on gear.
    £90.00
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    Ending Today at 10:54AM GMT
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  • Marshall Bass 60 Bass Amp Amplifier

    Marshall Bass 60 Bass Amp Amplifier

    This is a very rare 60Watt Marshall solid state bass amplifier. Cash on collection from Plymouth.
    £40.00
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    £0.00 postage
  • QSC PLX1804 Professional 1800 Watt Power Amplifier

    QSC PLX1804 Professional 1800 Watt Power Amplifier

    This amp has been in a flight case for it's whole life, and has only had light use. I removed a sticker from the bottom left hand side of the front, and it has taken away a little paint.
    £359.00
    Available for Best Offeror Best Offer
    £17.00 postage
  • Stagg EDA40 Electronic Drum Amp

    Stagg EDA40 Electronic Drum Amp

    Its great to have the silent practice of an electronic drumkit but sometimes you want to hear and feel the sound. Electronic drum amp. The EDA40 has 2 channels. Channel One is a line level input with a 1/4' input socket and dedicated volume control - great for auxiliary sources.
    £149.00
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  • HH VX-200 AUDIO HIGH PERFORMANCE PROFESSIONAL POWER AMPLIFIER

    HH VX-200 AUDIO HIGH PERFORMANCE PROFESSIONAL POWER AMPLIFIER

    Here is an HH Electronic V200 Professional Power Amplifier for sale. Collection recommended due to size and weight.
    £125.00
    £10.00 postage
  • Adastra RM306 6-zone mixer-amplifier + USB/SD/FM/BT

    Adastra RM306 6-zone mixer-amplifier + USB/SD/FM/BT

    The Amplifier has six 30w outputs which can be wired as 100v line or 8 Ohms. The RM306 has a built in media player which accepts SD card or a USB Memory Stick (fat16) and a FM Tuner. USB Microphones.
    £339.00
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  • Behringer Thunderbird Bx108 Bass Combo Amplifier

    Behringer Thunderbird Bx108 Bass Combo Amplifier

    Few scuffs and cuts in vinyl. Works fine.
    £30.00
    0 bids
    £10.00 postage
    Ending Sunday at 11:09PM GMT
  • ampex 350 valve mic amplifier module

    ampex 350 valve mic amplifier module

    This module originally came from an Ampex 350 tape machine. it has a really good sounding mic amp and can also be switched to a line bridging line amp. i have to say these are among the finest valve mic-pre's i've ever heard (i certainly preferred them to the siemens V72S) but 4U is a big space for a single mic pre and i no longer have that space available.
    £200.00
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    Ending Today at 8:36AM GMT
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  • Vintage Polytone Guitar/Keyboard/Bass Amp

    Vintage Polytone Guitar/Keyboard/Bass Amp

    Bass middle treble controls. Mini brute 11.Classic Favoured amp of so many jazz guitarists. This has hardly been gigged,and used mainly in the house.
    £250.00
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  • Marshall 1960a 4x12 Lead Cab

    Marshall 1960a 4x12 Lead Cab

    For sale is my Marshall 4x12 1960a Lead cab, great condition, few rips on the back, sounds awesome! Just had new castors fitted, don't use it anymore, so it's just lying around the studio!
    £229.00
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  • Laney LA60C Acoustic Two Channel Amplifier

    Laney LA60C Acoustic Two Channel Amplifier

    Two channel acoustic amplifier by Laney. Inputs for both guitar and microphone (xlr input ).
    £70.00
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    £0.00 postage
    Available for Best Offeror Best Offer
  • The t amp Pro Proline 2700 Power Amplifier

    The t amp Pro Proline 2700 Power Amplifier

    The T Amp Pro power amplifier. Model - Proline 2700. Power house of an amplifier. 2700 watt 8 ohms bridged. Speakon outputs. Jack and XLR inputs.
    £330.00
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  • 150W Fender Rumble Bass Amp

    150W Fender Rumble Bass Amp

    Used 150W Fender Rumble bass amp, works perfectly and in good condition apart from small rip on the front, bottom right.
    £100.00
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    £0.00 postage
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  • Session Rockette 30 amp

    Session Rockette 30 amp

    Most had a custom made 12” Celestion G12C 30 speaker. A 12” speaker in this class of amp was very unusual. Others had cheap inefficient 10” units which sounded like a bee in a biscuit tin! It had an RRP of £175.00 and was replaced by the Duette:112 (60W with a 12” Celestion G12M 70) and the Duette:110 (30W with a Celestion G10C 30).
    £99.00
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    Ending Sunday at 5:17PM GMT
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  • Fender Blues Deluxe Reissue Amplifier

    Fender Blues Deluxe Reissue Amplifier

    Classic Fender sound.I have owned this amp from new (about 2006). It has been gigged regularly and maintained regularly. Re valved every few years. Last done 2013 with Fender valves. Reason for sale is, I just don,t use it anymore.
    £400.00
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  • EX DISPLAY Hughes and Kettner TM36H Head Tubemeister 36W Tube Amplifier

    EX DISPLAY Hughes and Kettner TM36H Head Tubemeister 36W Tube Amplifier

    Independent gain and master knobs and a switchable FX Loop are standard appointments on modern triple channel amps. So Mr. Hughes and Herr Kettner built in a MIDI system to access the channels, FX loop and onboard reverb.
    £585.00
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  • Stage-Line 100 watt Stereo power amp

    Stage-Line 100 watt Stereo power amp

    Stage-Line 100 watt power amp good condition. Listing is for the amp only
    £50.00
    0 bids
    £15.00 postage
    Ending Sunday at 10:42PM GMT
  • Markbass Little Mark Rocker 500 Bass Amp Head

    Markbass Little Mark Rocker 500 Bass Amp Head

    It has one knock on the top right hand corner of the front where previous owner has obviously knocked it, can see in the picture. Includes MarkBass soft case.
    £330.00
    Available for Best Offeror Best Offer
    £15.00 postage
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  • Fender Mini '57 Twin Guitar Amp Tweed - 023-4811-000

    Fender Mini '57 Twin Guitar Amp Tweed - 023-4811-000

    The Mini '57 Twin-Amp™ captures the vibe of '50s era Fender®. For the player who can't afford a real or reissue tweed amp, this lets them buy their piece of Fender history! Fender Mini '57 Twin Guitar Amp.
    £37.00
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Guides

Pro Audio Amplifiers

An amplifier receives an audio signal from an instrument, mixer or signal processor and increases it to a power that can be converted into sound via speakers.

Types of Pro Audio amplifier

  • Instrument amplifier - such as a guitar or bass guitar amplifier. 
  • Mixer amplifier - an audio mixer that is ‘powered’ meaning that it contains a built in amplifier
  • Power amplifier - boosts low powered electronic audio signals to a level that they can drive a speaker to create sound

Operating classes of audio amplifiers

  • Class A  -have the lowest levels of distortion and the best sound, but use a lot of energy and generate heat up whilst in use. 
  • Class B - are more power efficient that Class A, but do create some distortion. 
  • Class AB - use two signals to provide efficiency of a Class B and the sound quality of a Class A.
  • Class D - are digital have a very high level of efficiency, generate far less heat than a Class A and can be manufactured to be very small, allowing them to be integrated into active speakers, headphones and more.

Technology types

  • Solid state - use software or transistors, and are often cheaper, lighter options that require the least maintenance. 
  • Tube / vacuum tube / valve - the preference of performers who crave the ‘analogue’ sound consisting of richer tones and a warmer sound, these amps are heavier, more expensive and require maintenance when valves wear out.
  • Hybrid - uses a solid state power amp alongside a valve preamp. It gives the warmer sound whilst keeping the amp cheaper and lighter than a  valve amplifier. 

Matching speakers to amplifiers

If an amplifier does not compliment speakers it is used with, either sound quality will degrade or the speakers may become damaged.

  • Power ratings - an amplifier should deliver twice the amount of power as the power rating on a speaker, per speaker. If an amp is going to be used with two speakers then the power delivery needs to be per channel.
  • Impedance - stated in ohms, the impedance on the amp should match that of the speakers. This is an important value in determining you do not blow your speaker and will depend on your system setup. Research impedance further if you are unsure.