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My jcm 2000 tsl 100 , doesn't produce the amount of gain i expect from it, i thought it gave as much as a mesa rectifier amp, i replaced the preamp tubes , but still, not enough gain

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Geez, how much drive or gain do you need? Maybe you should consider using a sustainer on your guitar if you expect it to be like using an ebow. No amp gives infinite sustain, especially a solid state one. A cheap guitar doesn't resonate well enough to do it regardless of what kind of amp you use. Too much drive takes away the punch attack or crunch and turns the sound muddy which makes it sound cheap, like a busted speaker. Marshall's aren't known for their drive, but for their tone overall. The combination of knowing how to use your effects and layering them in ways would give what I think you want.

Posted on Mar 08, 2013

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The sound level output is a true measure and unless you can compare specifications between units, you are probably listening to salesmen who want to sell you product.

The power level rating is OFTEN falsified and a LOT of the actual sound level performance depends upon the speaker used.

You should get a sound level meter to compare amps.

Remember to NEVER run more than 100 Db to avoid legal liability for hearing damage. I know several musicians who are nearly deaf now from being exposed to high levels too long. You can look up what the govt limits are now with Google.

The 2000 should EASILY reach the 100 Db level.

Posted on Mar 14, 2011

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There is not enough info here to provide a complete answer, but let me give you some background:

There will always be some hiss. This is due to general amplification where a small amount of noise is amplified along with the general signal. In most cases, the signal is strong enough to overpower any noise that is present (vocals in your example). This noise should not be that noticable in normal cases. If there is an automatic gain control in the line, this could account for it as with "silent" times, the gain will automatically be increased potentially to the degree where the noise is noticable.

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