Hartke KM200 200W Keyboard Monitor Amplifier

Professional 350W Bass Amplifier Head with Tube and Solid-State Preamp

The Hartke HA3500C Bass Amplifier Head is a legendary 350-watt hybrid bass amp designed for professional live performance, studio recording, and demanding rehearsal environments. Known for its powerful output and extensive tone-shaping capabilities, it delivers precise, articulate bass response with both modern clarity and warm analog character.

Built on Hartke’s long-standing reputation for reliability, the HA3500C remains a trusted choice for bassists who need flexibility, power, and consistent stage performance.

Selectable Tube and Solid-State Preamp Design

The HA3500C features a dual preamp system that allows blending between tube-style warmth and solid-state clarity. This gives players full control over tonal character, from clean and punchy to warm and harmonically rich.

Key Performance Features

• 350 watts output at 4 ohms / 240 watts at 8 ohms
• Selectable tube and solid-state preamp blending
• Active and passive instrument inputs
• Built-in variable compressor for dynamic control
• Rotary bass and treble contour controls

Advanced 10-Band Graphic Equalizer

The HA3500C includes a 10-band graphic EQ that provides precise control over the full bass frequency spectrum. This allows detailed tonal shaping for different venues, instruments, and playing styles.

• 10-band graphic EQ with ±15 dB adjustment range
• EQ in/out switch for quick tone comparison
• LED indicators for visibility in low-light conditions
• Designed for precise live and studio sound control

Comprehensive Tone-Shaping Controls

The amplifier includes dedicated contour controls and compression tools that allow bassists to refine their tone and dynamics for consistent performance across different environments.

• High-pass and low-pass contour controls
• Adjustable onboard compressor for smooth dynamics
• Preamp blending control between tube and solid-state tones
• Master volume control for output balancing

Professional Connectivity for Stage and Studio

The HA3500C is equipped with multiple input and output options for integration into professional bass rigs, recording setups, and live sound systems.

• Balanced XLR direct output for PA systems and recording
• Effects send and return loop for external processors
• Pre/post EQ selectable DI output routing
• Ground lift switch for noise reduction

Rackmount Design for Touring Musicians

Built in a durable rackmount chassis, the HA3500C is designed for touring reliability and professional stage use. Its rugged construction ensures long-term durability under demanding conditions.

• Rackmount-ready 2U metal chassis
• Road-ready construction for touring use
• Reliable thermal and electrical protection systems
• Designed for professional bass rigs

Ideal Bass Amplifier for Versatile Performance

The Hartke HA3500C is ideal for bassists who require a powerful and flexible amplifier for live gigs, studio recording, and rehearsal environments. It delivers strong output, detailed tone control, and dependable performance across multiple genres.

Why Choose the Hartke HA3500C?

The HA3500C combines high-output power, hybrid preamp flexibility, and a professional-grade 10-band EQ system. It remains one of Hartke’s most respected amplifier heads for bass players who demand tonal precision and stage reliability.