This Hartke 3500 bass head amp has been used exclusively with the SKB hard case (which is included with the head), so it is in very good condition. There is one EQ slider that is missing the gray knob, but it still can be adjusted up and down. If interested, I also have a Hartke XL Series 215 speaker cabinet - it has a cracked cone that needs repair, but am negotiable on a price for that.

Full details on the head:

Power: 350 Watts at 4 Ohms; 240 Watts at 8 Ohms

Selectable Tube and Solid-State Preamps

Rotary Bass and Treble Contour Controls

10-band graphic EQ

Adjustable Compression

Balanced XLR Out

Total Harmonic Distortion: Less than 1% at Rated Power

Signal-to-Noise: Approx. 78 dB

Effects: Send and Return

Bipolar Design

Passive/Active Input Jack

Rack-Mountable

Product Description
The Hartke Systems Model 3500 Bass Amplifiers offers all the newest concepts in bass amplification.

Features
Power to spare - a full 350 watts into 4 ohms.

Hartke's unique Transient Attack¬ circuitry ensures that every nuance of your bass performance is reproduced faithfully.

Two Pre-Amp input knobs, allowing custom blending of tube and solid state sounds.

Ten bands of high-quality graphic equalization, allowing you to create a broad range of tonal colors for your bass instrument. A dedicated in/out button allows you to preset an equalization curve.

Two fully adjustable contour knobs (high pass and low pass) provide further control over shaping your bass sound.

A built-in compressor not only adds real "punch" to your bass sound, but also allows you to smooth out volume differences between notes.

Two independent inputs accommodate both passive and active bass guitars.

Protection relay circuitry protects connected speakers from dangerous overloading, and prevents "thumps" when powering on or off.

Effect loop send and return jacks allow you to connect to professional outboard effects processors.

An effect Balance knob enables you to adjust the relative amount of Send ("dry") versus Return ("wet") effect signal being routed to the speaker outputs.

An electronically balanced direct output provides a means of routing signal to professional mixing consoles in both live performance and recording environments. A ground loop switch helps prevent hum or buzz from entering the signal, and a pre/post switch allows the direct signal to be derived either before or after the amp EQ section.

LEDs show you the settings of the graphic equalizer in low-light environments, as well as a 2-color LED that continuously shows the status of the compression circuitry in response to your playing.

Rugged construction makes the Model 3500 eminently roadworthy.