The GH100L is a 100 watt Marshall-esque amplifier complete with a switchable boost, effects loop, switchable bias, resonance control and slave out. This amp has had very little use and is in excellent condition in full working order.
    2 bidsEnding Today at 11:53AM GMT38m 7sCollection in person
  • Stagg 10GA 10W RMS Guitar Amplifier

    Please review the full item description of item "Stagg 10GA 10W RMS Guitar Amplifier" for all information regarding delivery and technical specifications.
    Top Rated Plus
    MSRP Previous price£79.50
    Click & Collect
    Free postage
    Brand: Stagg
  • Benson 15w electric overdrive guitar, bass & Electronic drum amplifier practise

    play along via your mp3 or phone ect. portable kit!
    Click & Collect
    257 sold
  • Vox Ac4Tv

    Tube amp with 3 different output modes (4 watt,1 watt and 1/4 watt). In very good condition
    Collection in person
    or Best Offer
    Brand: Vox
  • JOYO JA-03 Acoustic Sound Effect Mini Guitar Pocket Amplifier - Headphone Output

    JOYO JA-03 Acoustic Sound Effect Mini Guitar Pocket Amplifier. GUITAR ACCESSORIES. SLIDE / STEEL GUITAR. With Headphone Output. Features 3 controls: gain, tone and volume. BANJO & ACCESSORIES. UKULELE & ACCESSORIES.
    Click & Collect
    Free postage
    14 sold
  • WEM / Watkins vintage Virtuoso amplifier head.

    This is an 8 channel head which comes from the 1990s Soundman period and range. It's designed primarily for PA but can jst as easily be used for instrumenst. It is solid state, NOT valve. It has 6 x 2N3773 output transistors and is rated at 250 watts.
    0 bids
    £20.00 postage
    Ending Today at 2:31PM GMT3h 15m
  • Lab Gruppen 2600PF Amplifier

    Here we have my Lab Gruppen 2600PF Amplifier. The amplifier is used but in excellent condition. Very high end amp that sounds fantastic.
    3 bids
    £15.00 postage
    Ending Today at 8:35PM GMT9h 19mBrand: Lab.gruppen
  • Roland KC-60 Keyboard Amp. ( Free Postage Mainland Uk Only)

    In Excellent working condition. More photos available if requested. Roland's KC-Series Keyboard Amplifiers are known for their exceptional sound quality. Now anyone can step up to a KC amp. And once you do, you'll never look back.
    2 bidsEnding Today at 7:09PM GMT7h 53mCollection in personBrand: Roland
  • HH Electronics V800 MOSFET Power Amplifier

    Legendary mosfet amplifier. Power output Same model as used by Eddie Van Halen in his wet/dry/wet guitar rig. Eddie Van Halen's brown sound included this V800. COLLECTION FROM. 250 watts per channel into 8 ohms stereo.
    7 bidsEnding 26 Jan at 11:57AM GMT5dCollection in person
  • Monacor SAM-300D 300W RMS Sub Bass Plate Amplifier

    The controls include volume, frequency roll off and fully adjustable phase. This neat little unit is light weight, compact and is a high efficiency class D design and boasts an auto sensing standby circuit.
    Click & Collect
    Only 1 left!
  • Blackstar 4x8 speaker cab - Excellent condition.

    In excellent condition. It is a lovely sounding easily portable cab. Sorry, collection only.
    0 bidsEnding Today at 7:23PM GMT8h 7mCollection in personBrand: Blackstar
  • H&H V200 MOSFET Amplifier

    My favourite power amplifier. I have had the whole series of them with this being the smallest. These amplifiers are legendary, you just need to Google them to find out more. I used this as a guitar amplifier extensively during several tours across the UK and it has never ever let me down.
    0 bidsEnding Today at 10:45PM GMT11h 30mCollection in person
  • Vintage HH V-S Musician Reverb Guitar Amplifier Valve Sound 1970s w/ foot switch

    For an amplifier of this age I would recommend that these were replaced anyway. In working condition and has been recently used. A very nice sounding amplifier with a good quality reverb unit. The AC mains input has been replaced with a socket containing an integral RF filter.
    1 bid
    £21.34 postage
    Ending Today at 6:30PM GMT7h 15m
  • !!! Olson 19" Rack Mounted 7-Way Mains Distribution Unit - BARGAIN !!!

    The item was removed as part of a system upgrade I've been working on. In great condition comes with a 600mm power cable. 2U high and containing x7 13A socket outlets.
    5 bids
    £8.00 postage
    Ending Today at 9:05PM GMT9h 49m

    0 bids
    £14.99 postage
    Ending Today at 4:29PM GMT5h 14m
  • Vox Amplug 2 - Clean

    The new Vox amPlug 2 is perfect for late night practice or when you just want to lose yourself jamming with headphones and your favourite guitar. So regardless of your guitar's jack location or whether you prefer to sit or stand you can angle the amPlug 2 for comfort and convenient access to its controls.
    Brand: Vox
    Free postage
  • the t.amp TSA 2200 Pro Power Amplifier

    UK power cord also included. Weight: 10.4 Kg. Speaker twist output. XLR Input and output. 2400/ 4 Ohm (bridge mode).
    Click & Collect
    £14.99 postage
  • Heavy Duty Leather Case Handle, Briefcase, Flightcase,

    Our knowledge of Flightcase construction is extensive as we used to manufacture them for 16yrs and we have also been hiring out large sound systems for the past 30yrs so I think we have gained a good bit of knowledge about what works in a sound system as well as what does`nt.
    £2.95 postage
    958 sold

    Carlsbro Hornet 45 Keyboard. Collection from Staple Hill, Bristol.
    0 bidsEnding Today at 2:03PM GMT2h 48mCollection in person
  • Amcron Macro Tech 24-6 Amplifier

    Amcron Macro Tech 24-6 Amplifier
    3 bidsEnding 28 Jan at 6:52PM GMT7d 7hCollection in person
  • WEM / Watkins vintage Band Mix amplifier head.

    This is a rare amp from WEM. Similar to the Soundman range so it almost certainly dates from around 1979 – 1981. It’s a 5 channel PA mixer amp with graphic eq and built-in spring reverb.
    0 bids
    £20.00 postage
    Ending Today at 2:38PM GMT3h 23m

    Used but good condition. Works perfect.
    6 bids
    £10.00 postage
    Ending Today at 8:05PM GMT8h 49mBrand: Celestion
  • Yamaha P2040 Power Amplifier For Studio Monitors.

    Yamaha P2040. in good used condition and working as it should. Power output: 40 watts per channel into 8Ω (stereo), 20W (4 channel). Speaker load impedance: 8Ω (minimum). Signal to noise ratio: 117dB.
    3 bids
    £12.00 postage
    Ending 25 Jan at 10:15PM GMT4d 10hBrand: Yamaha
  • Fender Pawn Shop Special Excelsior 13Watt Tube Amp Combo

    To say nothing of its admirable tone and power. Distinctive features include Instrument, Microphone and Accordion inputs that each have individually optimized circuitry; tremolo circuit with speed control, bright/dark tone switch (for treble or bass emphasis), volume control and 1/4 internal speaker disconnect that lets the amp drive an external speaker enclosure.
    0 bidsEnding Today at 2:11PM GMT2h 55mCollection in personBrand: Fender
  • Behringer iNuke NU6000 Power Amplifer

    Heavily used Behringer Power Amplifer, still in great working order, don’t need it anymore as it was a spare.
    15 bids
    £7.00 postage
    Ending 22 Jan at 4:00PM GMT1d 4hBrand: Behringer
  • Peavey Bandit 65 Solo Series Guitar Amplifier USA 1984 -Hornchurch Clacton Essex

    Peavey Bandit 65 Solo Series Guitar Amplifier. Pick up only from either Hornchurch, Essex or Clacton, Essex. Made in USA 1984. Comes With Footswitch.
    0 bidsEnding Today at 2:04PM GMT2h 49mCollection in personBrand: Peavey
  • !!! Olson 19" Rack Mounted 10-Way Mains Distribution Unit - BARGAIN !!!

    The item was removed as part of a system upgrade I've been working on. In great condition comes with a 300mm power cable. 2U high and containing x10 IEC socket outlets.
    0 bids
    £8.00 postage
    Ending Today at 9:05PM GMT9h 49m
  • VOX Pathfinder 10W Combo Amplifier

    The VOX Pathfinder 10 Combo is perfect for home use and recording. If a practice amp combo is what you are after, the VOX Pathfinder 10 is the direction to head. VOX Pathfinder 10 Watt Combo. Those instantly recognizable, warm British sounds you've come to expect from VOX are alive and well in the compact, 10-Watt Pathfinder 10 combo – plus a high gain capability that's thoroughly modern!
    1 bid
    £6.50 postage
    Ending 22 Jan at 1:03PM GMT1d 1hBrand: Vox
  • Vortexion series 4000 model 4120 amp amplifier pre-owned in working order

    Vortexion Series 4000 Model 4120 amplifier.
    0 bidsEnding 24 Jan at 6:07PM GMT3d 6hCollection in person
  • VOX Pathfinder 10B - 10-watt Bass Guitar Practice Amp Combo

    ThePathfinder Bass 10 pumps out 10 watts into a pair of 5"" VOX bulldog speakers. A headphone/line output jack is also provided for silent practice and recording. Turning up the Drive control provides a warm, bass distortion that adds character and vitality to the tone.
    0 bids
    £6.50 postage
    Ending 22 Jan at 1:03PM GMT1d 1hBrand: Vox
  • KAM KXR-300 Power Amp - 300 Watt Rackable Mountable Amp

    Sold with power lead only.
    6 bids
    £12.95 postage
    Ending Today at 9:50PM GMT10h 34m
  • Trace Elliot AH150 SMC GP7 AMP

    Trace Elliot amp head. Full working order. Excellent condition recently serviced. Cracking amp will give some great solid sound. Active in Passive in 7 band eq Effects loop in & out Pre shape Graphic in & out Dual level compression LOUD!!! Collection only as it's too heavy to post.
    0 bidsEnding Today at 7:19PM GMT8h 4mCollection in person
  • Laney AH150 Audiohub - 150w guitar/keyboard/vocal/e-drum amplifier

    Great amp for guitar, keys, vocals, e-drum.etc.Portable 150W and VERY loud! Very flexible input and output connections to support many types of instrument/mic. Great tonal control using onboard graphic EQ.
    7 bidsEnding Today at 8:00PM GMT8h 44mCollection in person
  • Marshall G12 / Celestion Vintage 30 cm / 12in Speaker 8 Ohm Made in UK

    1 bid
    £10.00 postage
    Ending 22 Jan at 9:47PM GMT1d 10hClick & CollectBrand: Celestion
  • Carlsbro X-100 Mixer Amp Powered Mixer Band DJ Singer Karaoke PA - hardly used

    It has recently been tested and all works as it should and it comes with the power lead fitted with a standard three pin UK plug. Carlsbro X-100 Mixer-Amp. Output Power: 100 watts. Record in/out: 5 pin Din.
    0 bids
    £19.95 postage
    Ending 23 Jan at 10:36PM GMT2d 11hClick & Collect
  • Pulse PMH200 4 Channel PA Pulse PMH200 Power Mixer Amplifier Amp | DJ | Disco

    The PMH200 from Pulse is a 4 channel 2x 100W mixer amplifier, designed for sound reinforcement of vocals or music. When coupled with a pair of speakers, the PMH200 will be ideal for rehearsal rooms, small to medium band gigs, small school halls or presentations. 4 Channel mixer amplifier Power output: 2x 75W RMS (2x 100W peak) CD/Tape input located on rear panel Master volume & effects controls Effects loop - enables use of external processing 2 Band EQ on each input channel 3 Band EQ on main output 4x Balanced XLR microphone inputs 4x 6.35mm (¼") Jack line level inputs 2x Locking speaker output sockets Record output Convection cooled (no fan noise) Rugged, carpet covered housing complete with steel corner guards Rubber covered carry handle.
    Click & Collect
    Brand: Pulse
    65 watching
  • Crown LPS800 Power Amplifier

    The LPS Series of power amplifiers from Crown represents a new era in affordable, quality power amplification. Two level controls, power switch, power LED, and six LEDs which indicate signal presence, clip and fault for each channel.
    Brand: Crown
    £15.00 postage
    or Best Offer

    Top Rated Plus
    Free postage
    780 sold
  • Various EL34 power valve amp tube single used tested working amplifier EL-34

    Used tested good EL34 valves. Accumulated too many of these. Not matched. Not Mullard. Also pictured is the tester I checked them with.
    £3.50 postage
  • Marshall JCM800 2205 50w Head (1989) + 1960A 300w 4x12” Cabinet (1989)

    Marshall JCM800 2205 50w head from 1989 - Has 2 channels, 1 clean and 1 distorted. Marshall 1960A 300w angled cabinet 1989 - has 1 input for an amp head Had these two for less than a month, they work perfectly and have hardly been used. I bought from a women who’s son it belonged to however it was used previously for bedroom jamming until it was stored untouched since I purchased them. My only reason for selling them is that I’m after a more high gain amp. If you have any questions please don’t hesitate to drop me a message. *These items would be collection only as they are quite large/heavy*
    1 bidEnding 27 Jan at 8:58PM GMT6d 9hCollection in personBrand: Marshall
  • 28 paired lug terminal tag strip board pcb blank DIY amplifier amp mod

    Quantity is one at a time. Full of useful potential, modification to existing amps or straight up builds can use these.
    £1.50 postage
  • VOX AC30 ORIG TYPE 5 Serial ID Plate 1962/3

    Having a little clear out of some old Vox parts. For sale is a original type 5 Vox ID plate off a AC30 circa 1962/3 Not amazing condition as often is the case. But is the perfect piece if you’re missing one on a 62/3 AC30. Please Ask questions as all sales are final. No returns.
    0 bids
    £5.00 postage
    Ending 25 Jan at 8:32PM GMT4d 9hBrand: Vox
  • Roland KC-60 Keyboard Amplifier - 3 Channels - 60 Watts

    Roland KC-60 Keyboard Amplifier - 3 Channels - 60 Watts Any questions message me Happy bidding Thanks
    1 bid
    £20.00 postage
    Ending 22 Jan at 7:45PM GMT1d 8hBrand: Roland
  • 18W / 20W Valve Mains Transformer 290V CT 120mA, 6.3V 2.5A +1A Laydown

    290V CT 290V @ 120mA. 18Watt Push Pull Power Transformer. 6.3V @ 1A (EZ81 etc.). 6.3V CT @ 2.5A (EL84's, 12AX7's etc.). Purpose designed for Marshall 18W type amps, Vox AC15 and similar. Ideal for 2 X EL84 e.g. Vox AC15 or Marshall 18W.
    £4.00 postage
    8 watching
  • Line 6 Flextone Iii

    Good condition Line 6 Flextone 3 ( some cosmetic marks to the speaker grill). Great to record with too. Flextone™ III Features. Access to 36 Presets on Flextone. Comes with FBV shortboard ( not fully working- see below.).
    0 bidsEnding Today at 6:24PM GMT7h 8mCollection in person
  • New listingYamaha THR5A Amp

    THR5A is optimized for use with electric-acoustic and Silent Guitars. This amp has hardly been used it is in perfect condition. VCM Amp Models. Effects that enhance and complement your playing combine with room-filling reverbs and delays to push your playing to new levels.
    0 bids
    £5.00 postage
    Ending 25 Jan at 12:00PM GMT4dBrand: Yamaha
  • Roland CM30 Cube Monitor Speaker 30 Watts

    Roland CM30 Cube Monitor. Parcel Force 48 hour Signed For.
    0 bids
    £14.90 postage
    Ending 22 Jan at 7:56AM GMT20h 40mBrand: Roland
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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. 
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