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Welcome to Orange

Thank you for choosing Orange.

Since 1968, when the company was founded, Orange Amplification has been researched and developed by the guitarist for the guitarist. Today, with a team of the industry’s most dedicated engineers, it continues to test the boundaries of conventional amp design to bring you the latest range of heads, cabinets and combos.

Orange’s commitment to quality control, construction and craftsmanship is long established, and each amplifier passes through a rigorous test procedure before shipping, resulting in complete confidence that you will be delighted with your new purchase, and that it will provide you many years of enjoyment and reliability.

The warmth, tonal quality and rich harmonics generated by Orange amplifiers cannot be reproduced by artificial means. Many guitarists have reached the same conclusion: there is nothing as good as an analogue amplifier!

This web page contains valuable technical and safety information. Please take the time to read these instructions and warnings, as the information will enhance the performance and longevity of your amplifier.

  1. Read these instructions.
  2. Keep these instructions.
  3. Heed all warnings.
  4. Follow all instructions.
  5. Do not use this apparatus near water or other liquids.
  6. Clean only with a dry cloth.
  7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
  8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
  9. Do not defeat the safety purpose of the polarised or grounding-type plug. A polarised plug has two blades, with one wider than the other. A grounding-type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for a replacement of the obsolete outlet.
  10. Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit the apparatus.
  11. Only use attachments/accessories specified by the manufacturer.
  12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.
  13. Unplug this apparatus during lightning storms or when unused for long periods of time.
  14. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.


Where indicated or stated on the product/unit, this device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions:

  1. This device may not cause harmful interference
  2. This device must accept any interference received, including interference that may cause undesired operation.

Note: This equipment has been tested and found to comply with the limits for digital devices of its class, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try and correct the interference by one or more of the following measures:

  1. Reorient or relocate the receiving antenna.
  2. Increase the separation between the equipment and receiver.
  3. Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.
  4. Consult the dealer or a qualified technician for help.

Note: Changes or modifications not expressly approved by Orange Music Electronic Company, Ltd. could void the user’s authority to operate the equipment.

For customers in Canada: Where indicated or stated on the product/unit, this digital apparatus complies with Canadian Interference Regulations CAN ICES-3(B)/NMB-3(B).

All products are certified and tested to relevant safety standards. For further information, please contact us at

Voltage selection

The voltage-selector switch and mains fuse are set at the factory for the country or region in which this Orange product is intended to be sold. To prevent serious damage to the product, ensure that the rated AC mains voltage indicated on the product’s rear panel agrees with the mains voltage from your AC mains inlet before connecting the IEC power cable.

If the product is to be used outside of the factory-set region, please ensure the voltage-selector switch (found on the rear or side panel) is set to the correct voltage for the new country/region and that the appropriate mains fuse is fitted in the pull-out fuse tray below the IEC mains input.

The correct mains fuse rating for the product is printed on the chassis (see “Rear Panel Features”). Use only the same type and rating as specified for the product. Be advised that different operating voltages require the use of different types of line cord and attachment plugs. If you are unsure, please contact your Orange dealer.

Before using your amplifier

Always ensure the amp’s volume control(s) are set to zero before switching on the power to the amplifier. To prevent hum and electrical noise, operate your amplifier and instruments as far away from other electronic devices (especially fluorescent and neon lamps) as possible, as devices such as these generate extremely high levels of electronic noise.

Speaker output connections

  1. Make sure the correct speaker is connected at all times during operation.
  2. Do not connect to a speaker load which is less than 8 Ohms in total.
  3. Always connect to a cabinet of an appropriate power rating/handling.
  4. Never use two cabinets of different/mismatched impedance.
  5. Only connect speakers using a quality dedicated speaker cable. Never use an instrument cable.
  6. Never connect headphones to the speaker outputs.

If you are unsure, please contact your Orange dealer.


For one 16 Ohm cabinet — Use the 16 Ω speaker jack socket (rear panel).

For two 16 Ohm cabinets — Use both the 8 Ω speaker jack sockets (rear panel).

For one 8 Ohm cabinet — Use either of the 8 Ω speaker jack sockets (rear panel).


All Orange valve combos have an internal speaker load of 16 Ω and are connected to the amplifier’s 16 Ohm output at the factory. When using an extension cabinet, only ever connect a 16 Ω cabinet. To connect an extension cabinet to the combo, reconnect the internal speaker jack to either of the 8 Ohm speaker outputs, and connect a 16 Ohm extension cabinet to the other 8 Ohm speaker output. Ensure to reconnect the internal speaker to the 16 Ohm output when an extension cabinet is not attached.


When powering up, ensure the amplifier is set to the STBY position on the front panel for a minimum of two minutes prior to performance. This will prolong the life of the valves. The HT fuse(s) (rear panel) will blow in the event of output valve failure in order to protect the internal circuitry from damage. Orange recommends output valves are replaced in full matched sets. Orange models fitted with EL34 or 6550 valves will also benefit from a bias adjustment, which should only be undertaken by a qualified technician. When changing the HT fuse, gently push down on the fuse holder and turn anticlockwise to release the fuse.

Crush 20 RT — instructions for use

Top panel




Headphones socket


Aux in


Channel selector


Dirty Volume










Clean Volume



1. Power

The power light will illuminate when the power switch (rear) is set to on.

2. Headphones socket

Connect headphones via a stereo quarter-inch jack for silent practice. The Phones output features cabinet simulation and can also be used to connect the amp to a mixer or recording console. Avoid using headphones for extended periods at loud levels.

3. Aux In

For use with mp3 players, laptops etc. via a 3.5 mm audio cable. The audio signal is internally summed to mono.

4. Channel switch

Selects between the clean and dirty channels. This can be switched remotely via a footswitch (see rear panel).

5. Dirty volume

Adjusts the dirty channel output level. Note: with the gain set to zero, no sound will be heard.

6. Treble

Adjusts the high-end frequencies. Increasing the treble control produces brighter tones.

7. Middle

Adjusts the mid-range frequencies. Increasing the middle control produces a fatter sound. With higher overdrive settings, reduce the mid-range frequencies for a more ‘scooped’ modern tone.

8. Bass

Adjusts the low-end frequencies. Increasing the bass control produces deeper tones.

9. Gain

Experiment with the gain control for a wide range of crunch and heavily distorted tones. Higher settings add more distortion and saturation. Balance with the dirty volume control to achieve the desired output level.

10. Clean volume

Adjusts the clean channel output level. Higher settings on the clean channel will produce natural overdrive and breakup.

11. Input

Use a quality shielded instrument cable to connect your instrument to the Input jack socket.

Rear panel




AC mains input


Mains fuse


Voltage selector switch


Power switch

1. Channel

Connect a latching footswitch (e.g., FS-1) to remotely switch between clean and dirty channels. The front panel channel switch is disengaged when using a footswitch. An Orange FS-1 led will illuminate when the clean channel is selected.

2. AC mains input

Refer to “Before Using Your Amplifier“. Connect the supplied IEC cable to the AC mains input. Ensure the Power switch is set to Off before connecting the IEC cable.

3. Mains fuse

The mains fuse is located in the pull-out tray underneath the AC mains input. If the mains fuse blows, replace this fuse only with the exact type and rating as printed on the chassis. If the mains fuse continues to blow, contact your Orange dealer.

4. Voltage selector switch

Refer to “Before Using Your Amplifier”.

5. Power switch

Ensure the amp’s volume controls are set to zero before switching on power to the amplifier. Switch off when not in use.

Features:Twin channel guitar amp combo with high gain preamp, 3 band EQ, Aux In & CabSim-loaded headphone output
Top Panel (Right to Left):Instrument Input, Clean Volume, Dirty Gain, Bass, Middle, Treble, Dirty Volume, Channel Selector Switch, Aux In, Headphone Output
Rear Panel:Footswitch Jack (Footswitch sold separately)
Finish Options:Orange or Black basketweave vinyl
Output Power:20 Watts
Speaker:Custom 8″ Voice of the World
Unboxed Dimensions (W x H x D):37.5 × 32.5 x 19.7cm (14.67 x 12.8 x 7.75″)
Unboxed Weight:7.15kg (15.8lb)
Mains Input Power:39W
Mains Input Voltage:120V / 230V OR 100 / 120V (DEPENDING ON REGION)
Mains Fuse:220-240V: T315mA L 250V
100-120V: T630mA L 250V