Output Power Ranking:	60 watts RMS @ 5% THD 4 ohms minimum external load
Speaker Size and Rating:	(1) Custom Design 12", 4 ohms
Input Impedance:	470k ohms
Maximum Input Signal Accepted:	7 volts peak to peak
Total System Gain:	Overdrive 110dB all controls @ 10, Gain 1; 88dB Gain 2; Clean 58dB all controls @ 10
Overdrive EQs:	Low 11dB range @ 80Hz; Shape Proprietary Circuit; High 10dB range @ 10kHz
Clean EQs:	Low 22dB range @ 80Hz; Mid 14dB range @ 600Hz; High 28dB range @ 10kHz
Power Requirements:	120VAC, 60Hz, 90VA; 100/115VAC, 50/60Hz, 90VA; 230VAC, 50/60Hz, 90VA
Size and Weight:	17.5"H x 20"W x 11"D, 34 lbs

1.	Input Plug your instrument's output cord in here.
2.	Gain This control sets the amount of compression and distortion from the amplifier. With the control towards the far left, the sound will have a thick compressed quality. As you turn the control to the right the amount of distortion increases. Crate's exclusive 'Flex Wave' circuitry uses sequential cascading gains to deliver distortion which is rich in harmonics and 'touch sensitive.' Use this control along with the Shape and Level controls to create a wide variety of sounds.
3.	Shape This switch serves as a mid-cut control when pressed in, adding fullness to the sound of your instrument.
4.	Shape Active Boosts the gain of Channel A and activates the Shape control (#3). A footswitch (see #29, rear panel) overrides this switch.
5.	Low Adjust this control to get the best sounding bass response for your instrument. Excessive boost of the low control can cause an unnatural howling and should be avoided.
6.	High Adjust the high end response with this control. The high control covers a range of 10dB at 10kHz. This controls the 'bite' of your guitar.
7.	Level Adjust the Input output volume with this control. When using devices such as a CD or tape player, a rhythm machine, etc., use this control along with the output volume control of the device to achieve a good volume balance between the Input 1 and Input 2 signals.
8.	Channel Select Toggle this switch to the desired channel: up for Channel A, down for Channel B. A footswitch also may be used to select channels, in which case this switch is bypassed _ see #25, rear panel.
9.	Level Adjust the Input output volume with this control. When using devices such as a CD or tape player, a rhythm machine, etc., use this control along with the output volume control of the device to achieve a good volume balance between the Input 1 and Input 2 signals.
10.	Low Adjust this control to get the best sounding bass response for your instrument. Excessive boost of the low control can cause an unnatural howling and should be avoided.
11.	Mid Adjust this control to get the best projection and midrange tones for your instrument. The center point of the mid control is chosen by the setting of the contour control.
12.	High Adjust the high end response with this control. The high control covers a range of 10dB at 10kHz. This controls the 'bite' of your guitar.

http://www.crateamps.com/product/manuals/GX65.pdf