HARTKE HA4000 Bass Amplifier Head Rackmount 400W

( Brand: Hartke ), ( Manufacturer Part Number: HA4000 ), ( Model: HARTKE HA4000 ), ( Part Type: Amplifier Head Rackmount ), ( Amplifier Type: Head ), ( Power: 400 W ), ( Suitable For: Bass Guitar )

Review HARTKE Bass Amplifier Head Rackmount Amp

The Hartke HA4000 Bass Amplifier Head is a powerful and versatile rack-mount bass amplifier head designed to deliver exceptional sound quality and tonal flexibility for professional musicians and recording studios.

At its core, this 400-watt amplifier head boasts Hartke's advanced HyDrive technology, which combines the best of both worlds: the warmth and roundness of a traditional paper cone speaker with the punch and clarity of a modern ceramic driver. This unique design results in a well-balanced, dynamic response that's ideal for a wide range of musical genres and playing styles.

The HA4000 features a user-friendly 3-band EQ section, which allows you to fine-tune your bass tone to perfection. The mid and high-frequency knobs offer a broad /- 15dB range, while the low-frequency knob provides an impressive /- 30dB range. Additionally, the amplifier head includes a built-in compressor with an adjustable threshold and ratio, ensuring your bass lines remain consistent and well-defined, even during the most intense performances.

This rack-mountable bass amplifier head offers both XLR and 1/4" input jacks, providing flexibility for various connection options, including direct connection to a mixing console or passive bass guitars. The HA4000 also features a selectable impedance switch, allowing you to easily match the amplifier to different speaker cabinets.

Crafted from durable materials, the Hartke HA4000 Bass Amplifier Head is designed for the demands of the road. Its rugged steel chassis and heavy-duty components ensure reliable performance night after night, while its sleek black finish adds a touch of sophistication to any stage setup.

In summary, the Hartke HA4000 Bass Amplifier Head is a top-tier rack-mount bass amplifier head that delivers impressive power, versatility, and tonal flexibility. With its advanced HyDrive technology, user-friendly EQ controls, built-in compressor, and rugged construction, the HA4000 is an essential tool for any serious bass player or recording studio.

The Hartke HA4000 is a 400-watt rackmount bass amplifier head known for its powerful sound and versatile features. Here are some pros and cons that might help you decide if this amp head is the right choice for your bass playing needs.

1. Powerful Sound: With 400 watts of power, the Hartke HA4000 can deliver a powerful and punchy sound that is ideal for live performances and studio recording.

2. Versatile EQ: The amp head comes with a 3-band EQ, which allows you to shape the sound of your bass to your liking. It also features a semi-parametric mid control that provides more precision and flexibility.

3. Multiple Inputs: The Hartke HA4000 has multiple inputs, including XLR and 1/4" jacks, which makes it easy to connect different basses or other audio sources.

4. Durable Construction: The amp head is built with high-quality components and a rugged steel chassis, making it a great investment for bass players who require a reliable and long-lasting amplifier.

1. Expensive: The Hartke HA4000 is a high-end bass amplifier head, and its price tag reflects its advanced features and powerful sound. It may not be within everyone's budget.

2. Heavy: With a weight of over 20 pounds, the Hartke HA4000 is a heavy piece of equipment, which can make it difficult to transport or move around.

3. Complex Controls: The amp head has a lot of features, which can make it overwhelming for some bass players, especially those who are new to using advanced amplifier settings.

The Hartke HA4000 is a high-performance bass amplifier head that offers a powerful sound, versatile EQ, and durable construction. However, it comes with a hefty price tag and is a relatively heavy piece of equipment. If you are a professional bass player or studio engineer who requires a powerful, versatile, and reliable amplifier, the Hartke HA4000 is an excellent investment. However, if you are a beginner or just looking for a more affordable option, there are other bass amplifier heads that may better suit your needs.

If you are looking for a powerful and versatile bass amplifier head within a more budget-friendly price range, consider the Ampeg SQ810L Portable Bass Amplifier Head. It offers 800 watts of power, a 3-band EQ, and multiple inputs, making it a great option for live performances and studio recording. It is also more lightweight and portable than the Hartke HA4000. On the other hand, if you are a professional bass player who requires the advanced features and powerful sound of the Hartke HA4000, it is definitely worth the investment.

Details:

Known for its punchy tone and flexible EQ section, the HA4000 provides plenty of headroom tonal shaping options modern bass rigs. Hartke HA4000 Bass Amplifier Head 400W Rackmount Head, The is a powerful and versatile 400-watt bass amplifier head designed for both stage studio use. With two independent inputs, the easily accommodates both passive and active bass guitars, while 4-band EQ with dual sweep able parametric mid bands allows precise control over your sound. Ideal For: Live bass rigs Studio recording setups Bassists needing high headroom and flexible EQ Pairing with Hartke aluminum speaker cabinets.

Feel free to ask before making a purchase. The HA4000 also includes balanced XLR direct output for sending your signal directly to a mixing console, making it ideal live performances and recording setups. The units/items you see in our pictures are precisely what you'll receive. Our dedication to your satisfaction doesn't end with the purchase.

We love giving these vintage and rare pieces new life through maintenance upkeep. Hartke unique Shape contour filter sandbars harmonic enhancer add depth and punch, helping bass tones sit perfectly in a mix.

part #: ha4000 prices

• $599.99-$1299.99

specifications guitoamps:

• brand: Hartke
• mpn: Ha4000
• model: Hartke Ha4000
• part type: Amplifier Head Rackmount
• amplifier type: Head
• power: 400 W
• suitable for: Bass Guitar

offer guitoamps:

• availability: In Stock
• sold: 0
• started: March 10, 2026
• quantity: 1
• options: Ship-to-home

shipping guitoamps:

• type: Fixed
• cost: $99.99
• transit: 3-8 Days
• class: Expedited
• service: Expedited

general guitoamps:

• Musical Instruments Gear > Guitars Basses > Guitar Amplifiers
• condition: Used

payments guitoamps:

• other
• credit card: Visa
• wallet: Paypal

seller guitoamps:

• city: wood bury, New York
• # reviews: 10187
• rating: 100.0%

returns guitoamps:

• policy: Returns Accepted
• paid by: Buyer
• time: 30 Days
• method: Money back

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