Lab Gruppen FP6400 for Sale | Professional 2-Channel Power Amplifier

The Lab Gruppen FP6400 for sale is a professional two-channel power amplifier built for high-output touring, rental, club and fixed sound systems. Known as part of Lab Gruppen’s established FP Series, the FP6400 combines substantial amplifier output with a rack-friendly professional format, making it particularly attractive to sound companies and venues that need dependable amplification for appropriately matched loudspeakers and subwoofer systems.

For buyers maintaining an older professional PA inventory, the FP6400 can also be valuable as an additional or replacement amplifier within an existing rack. Its reputation in professional sound reinforcement has made the model familiar to touring engineers, rental businesses and installation companies across Europe.

Lab Gruppen FP6400 Professional Amplifier

The FP6400 is designed for professional sound reinforcement rather than domestic audio.

Its core specifications include:

Actual output and operating conditions should always be checked against the manufacturer’s documentation and the requirements of the connected loudspeakers.

High-Power Two-Channel Architecture

Unlike the four-channel amplifiers found in many newer racks, the FP6400 uses a powerful two-channel configuration.

This format can be particularly useful when a professional system needs substantial output from each individual amplifier channel.

For example, it may suit appropriately designed high-output loudspeaker or bass configurations where fewer channels with greater available power make more sense than a high channel-count amplifier.

FP6400 Power Output

One of the main reasons professional buyers continue searching for a Lab Gruppen FP6400 for sale is its output capability.

Published specifications for the model are approximately:

2 × 3200 W at 2 Ω
2 × 2300 W at 4 Ω
2 × 1300 W at 8 Ω

However, amplifier selection should never rely on wattage alone.

The loudspeaker impedance, recommended amplifier power, system processing, limiter configuration and expected operating conditions all need to be considered before connecting the amplifier.

Lab Gruppen Class TD Technology

The FP6400 uses Lab Gruppen’s Class TD amplifier topology.

Class TD was developed to combine characteristics associated with traditional Class AB output stages with a more efficient power architecture suitable for high-output professional amplification.

For professional users, the practical goal is substantial amplifier performance while reducing some of the size, heat and weight disadvantages associated with conventional high-powered amplifier designs.

This helped make FP Series amplifiers popular in professional touring and installation racks.

Regulated Switch Mode Power Supply

Professional amplifiers may operate in demanding environments where power requirements can change considerably throughout a performance.

The FP6400 incorporates a regulated switch-mode power supply, contributing to its professional high-output architecture.

This also helped Lab Gruppen package substantial amplifier capability into a comparatively manageable rack format.

For touring companies, power density and rack efficiency can be particularly important because every amplifier needs to be transported alongside the rest of the production equipment.

Lab Gruppen FP6400 for Subwoofer Systems

A Lab Gruppen FP6400 for sale may be especially attractive to operators building or maintaining professional low-frequency systems.

Large PA subwoofers can place substantial demands on amplification.

Therefore, the FP6400’s high-output two-channel architecture can make it relevant to appropriately matched professional bass systems.

Potential applications include:

• Professional subwoofer systems
• Club bass sections
• Touring PA
• Festival systems
• Live-event production
• Rental sound
• Concert venues
• Fixed professional installations

The correct amplifier-to-loudspeaker relationship must always be verified before operation.

Professional Club Amplification

Club systems often require amplifiers capable of supporting demanding music programs for extended operating periods.

Bass-heavy electronic music can place particularly significant demands on the low-frequency section.

Consequently, established high-output amplifiers such as the FP6400 remain of interest to professional club operators maintaining compatible systems.

However, correct ventilation, power distribution, loudspeaker processing and system limiting are essential in any professional installation.

Useful for Touring and Rental Companies

Rental businesses often maintain amplifier inventories for many years.

When an existing system was originally designed around a particular amplifier platform, purchasing another matching unit may be more practical than redesigning the entire rack.

An FP6400 can therefore be useful for:

• Expanding existing amplifier inventory
• Replacing a matching amplifier
• Maintaining spare equipment
• Building another compatible rack
• Supporting additional rental systems

For companies already familiar with Lab Gruppen FP Series equipment, technicians may also require less adjustment when integrating another matching amplifier.

2U Professional Rack Format

Despite its substantial output capability, the FP6400 occupies a 2U professional rack format.

Rack density matters in touring systems because amplifier racks need to be moved between warehouses, trucks and venues.

Likewise, fixed installations may have limited equipment-room space.

A relatively compact chassis therefore helps professional users build powerful amplifier systems without unnecessarily increasing rack size.

Correct Loudspeaker Matching Matters

High amplifier output must be managed carefully.

Before operating an FP6400, professional users should verify:

• Loudspeaker impedance
• Recommended amplifier power
• Number of cabinets per channel
• Processor configuration
• Crossover settings
• Limiters
• Cable requirements
• Mains power requirements
• Rack ventilation

Matching the amplifier correctly can help achieve the intended system performance while protecting associated equipment.

External DSP and Loudspeaker Management

The FP6400 is fundamentally a professional power amplifier, so complete PA systems may require appropriate external loudspeaker processing.

Depending on the system, that processing can handle functions such as:

Crossover management – dividing frequencies between loudspeaker sections.

Limiting – maintaining suitable operating parameters.

EQ – providing appropriate system tuning.

Delay and alignment – coordinating different loudspeaker sections.

This makes the FP6400 a strong amplification component within a properly engineered signal chain rather than an all-in-one system controller.

Combine with Professional Loudspeaker Systems

The FP6400 may be considered for different professional loudspeaker brands when its electrical and processing requirements are appropriately matched.

This makes it relevant to sound companies operating mixed professional inventories rather than equipment from only one manufacturer.

For your Euro Electronic Space inventory, this is also useful because customers browsing Funktion-One, Martin Audio, NEXO or other professional systems may separately require suitable amplification.

Compatibility should nevertheless be verified for each exact configuration rather than assumed from brand or wattage.

Buying a Used Lab Gruppen FP6400

When purchasing an established professional amplifier model, condition is important.

Buyers should ideally confirm:

• Operational condition
• Input and output condition
• Cooling-fan operation
• Front-panel controls
• Rack condition
• Previous service history where available
• Serial number
• Any included accessories

You haven’t provided the condition of this particular FP6400 yet. Therefore, this listing deliberately avoids claiming that it is “perfect,” “like new,” “recently serviced” or “low hours.” Those details can be added once confirmed.

Lab Gruppen FP6400 for Sale in Europe

Euro Electronic Space offers the Lab Gruppen FP6400 for sale in Europe for professional audio companies, clubs, venues, installers and rental businesses.

Shipping can be arranged to supported destinations throughout Germany, the Netherlands, France and Italy, as well as other European markets.

For professional customers purchasing several amplifiers or additional audio equipment, consolidated freight may also be arranged where available.

Frequently Asked Questions About the FP6400

How many channels does the Lab Gruppen FP6400 have?

The FP6400 is a two-channel professional power amplifier.

How powerful is the FP6400?

Published specifications rate it at approximately 2 × 3200 W at 2 Ω, 2 × 2300 W at 4 Ω and 2 × 1300 W at 8 Ω, subject to the manufacturer’s stated measurement and operating conditions.

What amplifier technology does the FP6400 use?

The FP6400 uses Lab Gruppen’s Class TD amplifier topology.

Is the FP6400 suitable for subwoofers?

It can be used with appropriately matched professional subwoofer systems when the impedance, power requirements, processing and limiting are configured correctly.

Is DSP built into the FP6400?

The FP6400 is primarily a professional power amplifier. Suitable external loudspeaker management may therefore be required according to the system configuration.

Can I use it in a club sound system?

Yes, it can form part of a professionally engineered club system when matched correctly with the associated loudspeakers, processing and electrical infrastructure.

Is this FP6400 new or used?

The condition was not specified in the supplied product information, so the listing should not make a condition claim until that detail is confirmed.

Do you ship across Europe?

Shipping can be arranged to supported European destinations, including Germany, the Netherlands, France and Italy.