Some microphones (Cardiod) can utilize external "phantom" power to operate at their optimum level. This feature supplies that power to selected jacks. Check your microphones to see if they require phantom power and/or an internal battery.

What makes Crate's Speakers and tweeters "Special Design?"

CRATE special design speakers are produced to exact specifications strictly for CRATE products.

Why do some CRATE amplifiers have a "slant front cabinet"?

The cabinet is slanted to provide the clearest tone for players and listeners. It points the speakers and especially the tweeter, toward ear level and projects the higher frequencies toward the head.

How does the effects loop work?

The effects loop gives you ability to "mix" an external device into the overall sound that your amp produces. Most effects loops consist of a SEND jack and a RETURN jack. The SEND jack is the outgoing signal from your amp and goes to the input jack of your effects processor. The return jack is for the incoming signal and comes from the output jack from your effects processor. (See your owner's manual for more information).

What is a feedback elimination circuit?

Because of the highly resonant properties of certain instruments (especially acoustic instruments) they are inclined to feed back into the amplifier very easily. The feed back elimination circuit de-emphasizes certain frequencies that tend to create a "squeal" or "feedback loop". This provides players a much higher level of clarity when practicing or performing at high volume levels.

What is a ground lift?

A ground lift is used to eliminate ground loops that could occur in a multi-input/output situation, such as a CRATE acoustic amp with multiple channels. Essentially, the ground lift eliminates hum and provides a cleaner tone.

What is Onboard DSP?

On board DSP means that your amp is equipped with a built in Digital Signal Processor. Although the effects that are built in to the DSP on each particular amp may vary the operation is usually very basic and can be changed by simply adjusting the DSP control knob. Your owner's manual will have details on what each effect does and how to use them).