Spider V 20 MkII is the perfect practice amp for any guitarist, whether playing through one of the 16 tonally diverse presets, or dialing in personalized tones with the easy-to-use controls. Each preset contains effects that can be switched in and out stompbox-style using the dedicated FX buttons on the front panel, and there's also an independent Reverb knob.

Explore Features

  • Presets
  • Practice Tools
  • Free App & USB


Input Jack

Plug your guitar in here.

PRESET Encoder

Turn to select one of the 16 available presets. A preset stores the value of each knob, as well as the FX 1, 2 & 3 model types and their bypass states.

Drive Knob

Controls how much gain you get in your sound.

Tone Knob

Controls the overall tone from dark to bright.

Volume Knob

Controls the preset volume independently of the Master Volume control.

Reverb Knob

Controls the reverb level.

FX Knob

Controls the overall level for up to three effects (selected using the three FX buttons) and is also used to adjust individual effect levels.

FX 1, 2 & 3 Buttons

These color-coded buttons engage/bypass the three effects, and also select which effect may be adjusted using the FX control.

Save Button

Press to save all edits made to a preset.


Tap this button in time with the music to set the tempo of delay and modulation effects. Press and hold to engage the Tuner.

Master Volume Knob

Sets the overall volume of the amplifier (or headphone volume when headphones are connected).

Phones Output

Connect a pair of stereo headphones here. The speakers are muted when headphones are connected. This jack also doubles as a direct output. Use a stereo TRS cable to connect to a mixer or recording device.

Micro USB-B Port

Connect a Mac, PC, iOS, or Android device (using an OTG adapter if needed) to update your amplifier's firmware, edit your tones with the free Spider Remote app, and record and play audio.

  • Input Jack
  • PRESET Encoder
  • Drive Knob
  • Tone Knob
  • Volume Knob
  • Reverb Knob
  • FX Knob
  • FX 1, 2 & 3 Buttons
  • Save Button
  • TAP/TUNER Button
  • Master Volume Knob
  • Phones Output
  • Micro USB-B Port

Power Switch

Turns the amplifier on/off.


The included power cable connects here. See the rear panel markings for electrical information.

  • Power Switch
  • AC In


*Sign up will create a Line 6 account and add your information to the Line 6 email list to receive offers, promotions, and news updates.

Mac is a registered trademark of Apple Inc.
IOS is a trademark or registered trademark of Cisco in the U.S. and other countries and is used under license.
Android is a trademark of Google LLC.
Cubase is a trademark or registered trademark of Steinberg Media Technologies GmbH, registered in Europe and other countries.