Ok thanks Kurt. Let me get this straight theres 3 types of 'amps' which i didnt know until this thread...
Receiver - Bunch of stuff i dont need unless i want 5.1/7.1 etc? Costs alot for the power i need.
Integrated - Costs a bit less, has a bit less stuff and is generally 2.1?
Power - Costs loads less and has even less features but makes up for it with lots of power and is perfect for 2.1 but needs a controlable source?
Please feel free to tell me how wrong i am about the above haha(if i am
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).
Before this thread existed i would have called them all "amps" and assumed the power amps were low quality for such a low price and high power. Now i know that this is their purpose and especially that a500 you linked, gets really good reviews.
This has given me a lot to think about whether i want to stay 2.1 or eventually go 5.1.
thanks so much Kurt and everyone else.
Just a couple of comments.
A stereo receiver is essentially an Integrated Amp with a tuner (radio) built-in
An AVR (audio video receiver) has the provision to accomodate video which includes adding additional channels (5, 7, 9, 11 channels depending on how crazy you want to get.
Music is still primarily recorded in stereo with a few exceptions.
A stereo Receiver may have a sub output, but this is almost always a full-range signal combining both channels into one monophonic output for the sub. You need to use the crossover at the sub to attempt to match the natural roll-off of your speakers.
An AVR typically has one or two sub outputs which output a signal tailored to bass. The AVR includes bass management which rolls-off the speakers and the subwoofer signals at whatever frequency you select. This allows the roll-off of the speakers and the sub to be
theoretically a perfect match. The AVR also includes a processor to be able to provide various sound modes (Dolby, DTS, etc).
An Integrated Amp is the combination of a pre-amp and a power amp. The pre-amp manages volume, tone control, balance, input selection, etc. while the power amp simply increases the power to a level capable of driving speakers.
The price of an AVR is generally very competitive with integrated amps. The Yamaha amps are a standout for being economical. Otherwise, you will be hard pressed to find a name brand integrated amp for less than $500. Emotiva has some, but I'm not sure you can get in the UK.
The reason AVR's are competitive is that in the current market, a mainstream company probably sells at least 20 AVR vs each integrated amp they sell. The higher volume of production takes advantage of the economies of scale and mass production.
The Behringer A500 is an exceptional buy, not really indicative of the Power amp market. For one thing, it is intendeded to be used in the pro audio industry (for performance) rather than home audio. It eschews pretty milled aluminum face-pates and polished knobs for simply practical amplification and takes advantage of the higher volume of power amps sold in the highly competitive pro-audio market.
These (especially the AVR) are complex equipment and there are several different variations, but this kind of summarized the general differences.