Wish to buy Guitar Amplifier

[eem2am]

Hello,

I am wondering where i can buy a Guitar Amplifier of the following specification:-

Mains input of 90VAC-265VAC (we travel widely)

Must use Class D audio amplifier

Power Level of 330W Maximum.


Do you know of a vendor and part number for this?

[Wavebourn]

What about class D speaker cabs? They will be huge and heavy, even if you fit the amp into pocket of your jacket.

[Enzo]

Other than the universal mains specification, how did you arrive at the other requirements?

For example, why must it be class D circuitry? Especially since it is a guitar amp?

And how did we come to the odd amout 330 watts for output?

[eem2am]

Hi,

We want Class D because its less weighty than eg Class A, even if the cabs are still huge.

We have been practising on Class D and want to keep it that way because we have the amplifiers that use class D that have nice effects for us....can download sounds from web etc.....class a or ab type dont have these effects.

330W is a nice power for the type of venues we play.

[Wavebourn]

It sounds like a total nonsense, about classes of power stages and effects. They are absolutely unrelated.

Class D means output stage of the amp is working in pulse - modulating mode, so output devices dissipate very low power since they always either on (very low voltage) or off (very low current). It saves power, and don't require such cooling as in case of other modes of output stages. That's why power amps with class D outputs are lighter: they don't need big and heavy heatsinks.

But heatsinks have absolutely nothing to do with effects, be they analog, or digital downloadable from anywhere.

[tinitus]

Originally Posted by Wavebourn

It sounds like a total nonsense, about classes of power stages and effects. They are absolutely unrelated.

yeah, unless it means that 'they' take it to the limit, and get max power with a severely under dimensioned design

if so I guess its easy to imagine some lack of power, or 'wimpy sound'

or are you suggesting that 100watt is 100watt, no matter what


but I guess you want to say that classD can be as powerful as anything, if done properly
but is it

[Wavebourn]

Originally Posted by tinitus

yeah, unless it means that 'they' take it to the limit, and get max power with a severely under dimensioned design

Yeah, but if you read what eem2am means, it is totally different.

Overload of power stages (tubes, transformers) is used for "guitar effects", while clipping of class D amp can cause only such an effect as fried speakers.

Here it is, again:

We have been practising on Class D and want to keep it that way because we have the amplifiers that use class D that have nice effects for us....can download sounds from web etc.....class a or ab type dont have these effects.

You see? Presence of DSP in the amp is not related to class of output stage. However, if guitar amp uses class D output it has no "effects" except speaker-frying, so in order to be usable for guitar it reauires some effect box built into it. But the same effect box can be built into any amp regardless of the class of it's output stage.

[res07njc]

330 guitar watts is total overkill.. are you playing stadiums?

[tinitus]

ah, ok, thanks for the update

well, there are plenty of guitar effect units
seems like its a huge market

[eem2am]

i didnt explain it right.

i meant that the new type of guitar amplifiers, that yuo can PC interface , only contain class d amplifiers.

they could contain class a if they wanted ....but the manufs dont do it with class a , so we stuck with class d