headway EDB-2 VAP User Manual

Describes the H.E.A.T. feature for tone enhancement.

Covers improved inputs, twin channels, EQ, mute, and phantom power.

Details versatile outputs, USB charging, and battery backup.

Discusses panel layout, enclosure, controls, and manual.

Details how the EDB-2 VAP handles gain and shapes signals for optimal sound.

Explains the 'High Harmonics' and 'Rich Harmonics' enhancer features.

Discusses the valve's response, standby/mute function, and portability.

Crucial safety advice for preventing electrical shock, damage, and injury.

Guidelines for proper grounding, mains protection, and preventing electrical hazards.

Details procedures for servicing, repairs, returns, and legal disclaimers.

Explains Headway's liability regarding product damage and consequential losses.

Outlines the terms and conditions of the EDB-2 VAP warranty and guarantee.

Provides recommendations for storing and transporting the EDB-2 VAP safely and securely.

Specifies the recommended sequence for connecting and powering on the device.

Explains how to interface different pickup and microphone types with the unit.

Details active under-saddle piezo pickup systems and their characteristics.

Describes Headway's 'The Band' and 'Band2' pickups for bowed instruments.

Covers active piezo contact pickups, noting their feedback resistance.

Details transducers/contact pickups with high impedance and optimal ranges.

Details true condenser or ribbon mics, optimal voltage, and output quality.

Details how input impedance switches affect tone and response for jack inputs.

Describes the +Hi impedance setting for passive pickups and optimal cable shielding.

Discusses the importance of cable shielding for minimizing hum and radio interference.

Explains how the Channel 1 jack input handles mono/stereo signals and phantom power.

Describes the gain controls, their range, and how they affect input signal levels.

Explains how gain controls affect sound, valve drive, and potential noise levels.

Advises on reducing noise and the impact of valve choice on performance and longevity.

Details two methods (A and B) for setting Gain and Master levels, discussing sonic differences.

Provides guidance on EQ settings for various instrument types like guitars and violins.

Explains how boosting EQ and the Harmonic Enhancer affect sound frequencies.

Discusses various influences that contribute to the overall sound and tone.

Explains the Low Mid and Hi Mid controls' frequency ranges and impact on tone.

Describes Presence and Treble controls' frequency ranges and impact on tone.

Details the three main applications for the Pre/Post EQ switch on D.I. XLR outputs.

Details the 'High' Harmonics enhancer, its sonic impact, and application.

Provides guidance on using the 'High' Harmonics enhancer with piezo pickups.

Explains the 'Rich' Harmonics feature and Valve Blending for warm tones.

Discusses valve characteristics, tone shaping, and the effect of drive levels.

Provides steps for setting up the 'Rich' Harmonics valve sound on Channel 1.

Details the power requirements for the valve, emphasizing PSU usage over batteries.

Covers user-serviceable maintenance, spare parts, and allowed modifications.

Discusses how to use the valve sound for specific playing styles and applications.

Describes the gentle compression effect added by the valve for smoother playing.

Explains the Channel 2 input for additional pickups, balancing instruments, and EQ.

Clarifies how stereo jack inputs are routed to channels 1 and 2, and mono plug behavior.

Covers XLR input impedance, compatible mics, and stereo microphone use.

Explains the 10v and 48v phantom power options for XLR inputs.

Explains how the valve enhances microphone sound quality, particularly for condensers.

Discusses microphone placement in free air, resonant chambers, and feedback issues.

Recommends specific polar patterns for microphones for optimal sound quality.

Details the 3-way phantom power switch for the Channel 1 jack input.

Explains phantom power for electret condenser mics and pickup systems, advising battery removal.

Details the Notch-Q and Notch Frequency controls for bandwidth and cut frequency.

Provides strategies for using the Notch Filter to cut unwanted frequencies and feedback.

Provides techniques for using the Notch Filter to eliminate feedback peaks.

Details how to use the Notch Filter to eliminate the piezo 'quack' sound.

Describes the high-pass filter function of the Range Controls and their effect on frequencies.

Provides specific settings for the Range Controls for bass instruments, guitars, and violins.

Details the 'Rock Acoustic' setting for the Range Control.

Further explains the 'Rock Acoustic' setting and its application in loud environments.

Details the 'In Phase' and 'Out of Phase' settings and their effects on sound and feedback.

Explains how to connect effects pedals or rack units using the Send and Return jacks.

Provides instructions for maintaining the Send & Return sockets and Insert Point.

Explains the Line Out as a standard mono jack output for connecting to amplifiers or monitors.

Details the D.I. Balanced Outputs via XLRs, their advantages, and routing options.

Details the use of the dedicated 18v DC Power Supply Unit and its importance.

Provides instructions on how to install, handle, and check batteries.

Discusses battery lifespan for backup power and recommended battery types.

Details the lifespan of various rechargeable battery types when used for backup.

Provides dimensions, weight, and packaging details of the EDB-2 VAP.

Details the electrical characteristics and performance specifications of the EDB-2 VAP.

Lists the input impedance values for the jack inputs on channels 1 and 2.

Covers XLR input impedance, gain range, and phantom power options for XLR microphone inputs.

Lists the specifications for the Range Controls, which function as high-pass filters.

Covers phantom power capabilities and limitations for XLR and jack inputs.

Provides specifications for Line Out and D.I. Balanced Outputs.

Details the specifications and requirements for the D.C. Power Supply Unit.

Offers solutions for preventing acoustic feedback and managing room resonances.

Provides techniques for cutting feedback, adjusting amplification, and managing sound.

Offers solutions for uneven string amplification, harshness, or boomy sounds.

Guides users on diagnosing and fixing weak, dull, or distorted sound issues.

Explains how to identify and reduce interference, hum, buzz, and radio noise.

Advises on keeping equipment away from interference sources and managing mains power.

Guides on reducing hiss caused by faulty gear, imbalances, or poor quality leads.

Provides steps for troubleshooting intermittent signals or lack of output.

Details checks for battery, valve, and cable connections to ensure proper operation.

Advises on seeking help for persistent problems from dealers or Headway support.

Lists new products expected to be released by Headway in 2023-4.

Outlines Headway's commitment to product improvement and changes.

Advises on registering the guarantee online for validation.

Lists the address and website for Headway Music Audio returns and repairs.