TC Electronic JIMS 800 PREAMP Guitar Pedal

1. Introduction

The TC Electronic JIMS 800 PREAMP is a twin-channel guitar preamp pedal designed to deliver classic, guitar-driven rock tones. Utilizing advanced TC Ampworx component-based modeling technology, this compact pedal encapsulates the sound and feel of an iconic 80s guitar amplifier. It features independent channel controls, pre/post boost functionality, and dedicated outputs for DI and headphones, offering versatile usage for practice, recording, and live performance.

2. Safety Information

• Always use a regulated 9V DC power supply with a center-negative polarity and a minimum current rating of 300mA. Incorrect power supplies can damage the unit and void the warranty.
• Do not expose the pedal to water, moisture, or extreme temperatures.
• Avoid dropping or subjecting the pedal to severe impacts.
• Do not attempt to open the enclosure or modify the internal circuitry. Refer all servicing to qualified personnel.
• Ensure proper ventilation around the pedal during operation.

3. Package Contents

Your TC Electronic JIMS 800 PREAMP package should contain the following:

• JIMS 800 PREAMP Guitar Pedal
• Quick Start Guide (if included)

Note: A power supply is not included and must be purchased separately.

4. Product Features

• Twin-Channel Preamp: Offers two distinct channels for versatile tonal options.
• Independent Channel Controls: Each channel features dedicated controls for precise tone shaping.
• Pre/Post Boost: Provides an added gain boost that can be applied before or after the preamp section.
• Dedicated Outputs: Includes outputs for DI (Direct Injection) and headphones for flexible connectivity.
• Treble Bleed Circuit: Smooths out sharp tones for a more pleasant listening experience.
• Authentic Cab Simulation: Features precise convolution-based IR technology for a classic G12-65 4x12 cab speaker sound.
• Versatile Tonestack: Combines the iconic tone control layout of the original amp with modern versatility.
• Added Gain Power: A subtle additional gain boost on the second channel pushes your sound without compromising the original amp's feel.

5. Controls and Connections

Figure 1: Front Panel Controls

• GAIN Knob: Adjusts the input gain and distortion level of the selected channel.
• BOOST Knob: Controls the level of the independent boost function.
• LEVEL Knob: Sets the overall output volume of the pedal.
• BASS Knob: Adjusts the low-frequency response of the tone.
• MID Knob: Adjusts the mid-range frequency response of the tone.
• TREBLE Knob: Adjusts the high-frequency response of the tone.
• BOOST Footswitch: Activates or deactivates the boost function. An LED indicates its status.
• CHANNEL Footswitch: Switches between the two preamp channels. An LED indicates the active channel.
• PHONES Jack: 3.5mm stereo output for headphones, featuring cab simulation.

Figure 2: Rear Panel Connections

• IN Jack: 1/4" mono input for your guitar.
• OUT Jack: 1/4" mono output to your amplifier or other pedals.
• DI Jack: XLR output for direct connection to a mixing desk or audio interface, with cab simulation.
• PRESENCE Knob: Adjusts the high-frequency contour, adding clarity or bite.
• PRE/POST Switch: Determines whether the boost is applied before (PRE) or after (POST) the preamp section.
• 9V DC Input: Power input for a 9V DC, center-negative power supply (300mA minimum).
• USB Port: USB 2.0 Type B port for firmware updates and potential future functionalities.

6. Setup

1. Power Connection: Connect a 9V DC, center-negative power supply (minimum 300mA) to the 9V DC input jack on the rear panel.
2. Guitar Connection: Connect your guitar to the 'IN' jack on the rear panel using a standard 1/4" instrument cable.
3. Output Connection:
   • For connection to a guitar amplifier, connect the 'OUT' jack to your amp's input.
   • For direct recording or live sound, connect the 'DI' XLR output to a mixing console or audio interface. This output includes cab simulation.
   • For silent practice, connect headphones to the 'PHONES' 3.5mm stereo jack. This output also includes cab simulation.
4. Initial Settings: Before powering on, set all knobs (GAIN, BOOST, LEVEL, BASS, MID, TREBLE, PRESENCE) to their 12 o'clock (noon) position. Ensure the PRE/POST switch is set to your desired boost placement.

7. Operating Instructions

7.1 Channel Switching

Press the CHANNEL footswitch to toggle between the two distinct preamp channels. The corresponding LED will illuminate to indicate the active channel.

7.2 Gain and Level Adjustment

• Use the GAIN knob to control the amount of overdrive and distortion for the selected channel. Higher settings will yield more saturated tones.
• Adjust the LEVEL knob to set the overall output volume of the pedal. Ensure the output level is appropriate for your amplifier or recording device.

7.3 Tone Shaping (EQ)

The JIMS 800 PREAMP features a versatile 3-band EQ:

• BASS: Controls the low-end frequencies, adding warmth or tightness.
• MID: Adjusts the mid-range frequencies, affecting the presence and punch of your tone.
• TREBLE: Controls the high-end frequencies, adding brightness or smoothness.
• PRESENCE: (Rear Panel) Fine-tunes the very high frequencies, adding sparkle or cutting harshness.

7.4 Boost Function

• Use the BOOST knob to set the desired amount of boost.
• Press the BOOST footswitch to engage or disengage the boost.
• The PRE/POST switch on the rear panel determines where the boost is applied in the signal chain. 'PRE' applies the boost before the preamp, increasing saturation. 'POST' applies the boost after the preamp, primarily increasing volume.

7.5 Cab Simulation

The DI and PHONES outputs feature an authentic G12-65 4x12 cab simulation, providing a studio-quality speaker cabinet sound directly from the pedal. This is ideal for recording or connecting directly to a PA system without needing a physical amplifier or cabinet.

8. Maintenance

• Cleaning: Use a soft, dry cloth to clean the pedal's exterior. Do not use abrasive cleaners or solvents.
• Storage: When not in use for extended periods, store the pedal in a cool, dry place away from direct sunlight and extreme temperatures.
• Firmware Updates: Periodically check the TC Electronic website for any available firmware updates for your JIMS 800 PREAMP via the USB port.

9. Troubleshooting

• No Sound:
  • Ensure the power supply is correctly connected and functioning.
  • Check all instrument cables for proper connection and integrity.
  • Verify the LEVEL knob is not set to minimum.
  • If using DI or headphones, ensure the receiving device (mixer, interface, headphones) is properly connected and its volume is up.
• Poor Tone/Unwanted Noise:
  • Check your guitar's pickups and wiring.
  • Experiment with the GAIN and EQ (BASS, MID, TREBLE, PRESENCE) settings.
  • Ensure you are using a clean, regulated power supply. Unregulated or noisy power supplies can introduce hum.
  • Test with different cables to rule out faulty connections.
• Boost Function Not Working:
  • Ensure the BOOST knob is turned up from minimum.
  • Check the BOOST footswitch LED to confirm it's engaged.

10. Specifications

11. Warranty and Support

TC Electronic products are designed for reliability and performance. For information regarding warranty coverage, technical support, and service, please visit the official TC Electronic website or contact their customer support directly. Keep your proof of purchase for warranty claims.

Official TC Electronic Website: www.tcelectronic.com