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Average Price: $279

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$299

$1500+

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Description

The Alesis RA300 is more than just a power amplifier; it's a reliable workhorse that thrives in both live sound environments and studio settings. Known for its exceptional signal-to-noise ratio of over 105dB, this amplifier ensures that every note is delivered with pristine clarity, even in the most demanding audio setups. The RA300 offers a robust power output, making it adept at handling a variety of speaker configurations. It delivers 150 watts per channel at 4 ohms, 90 watts per channel at 8 ohms, or an impressive 300 watts in bridged mode, giving you the flexibility to tailor your setup to your specific needs.

Engineered with an advanced cooling system, the RA300 is built to withstand long sessions without compromising on performance. Its sleek, modern design not only looks sharp but also integrates seamlessly into any studio or stage setup. Whether you're looking to amplify your live performance or enhance your studio recordings, the RA300's wide frequency response of 10Hz to 70kHz ensures that you capture every sonic detail with precision. With its dependable operation and versatile power output, the Alesis RA300 is a compelling choice for musicians and audio professionals seeking high-quality amplification.

Key Features:

  • 2 RU power amplifier design
  • 150 watts RMS per channel at 4 ohms
  • 90 watts RMS per channel at 8 ohms
  • 300 watts RMS in bridged mode
  • Signal-to-noise ratio: >105dB
  • Frequency response: 10Hz - 70kHz (+0, -3dB)
  • Distortion: <0.02% at 4 ohms, 20Hz - 20kHz
  • Input sensitivity: +4dB for rated output
  • Crosstalk: -85dB at 1kHz
  • Servo-controlled output offset: +/- 50 mV

Product specs

Brand Alesis
Model RA300 Reference Amplifier
Finish Black
Year 2010s
Categories Power Amplifiers

FAQs

Is the Alesis RA300 suitable for both studio and live sound applications?

Yes, the Alesis RA300 is designed to provide clear and reliable amplification for both studio monitoring and live sound reinforcement, making it versatile for various audio environments.

What are the main connectivity options available on the Alesis RA300?

The Alesis RA300 features both balanced and unbalanced inputs, accommodating a range of connections for different audio setups, including professional studio and live sound systems.

Does the Alesis RA300 have any built-in protection features?

Yes, the Alesis RA300 includes thermal and overload protection to ensure safe operation and longevity, safeguarding the amplifier and connected equipment from potential damage.

What is the power output capability of the Alesis RA300?

The Alesis RA300 delivers 150 watts per channel at 4 ohms, providing ample power for driving speakers in various audio applications, from small venues to home studios.

How does the Alesis RA300 handle heat dissipation?

The Alesis RA300 is equipped with a cooling fan and heat sink to effectively manage heat dissipation, ensuring consistent performance during extended use.

Robert Rodriguez

Robert Rodriguez

Alesis RA300 Class AB Studio Reference Amplifier for sale on eBay

Video thumbnail for Alesis RA300 Class AB Studio Reference Amplifier for sale on eBay by Robert Rodriguez

Alesis RA300 Class AB Studio Reference Amplifier for sale on eBay

Robert Rodriguez

Robert Rodriguez

Video thumbnail for Alesis  RA 300 by Виталий Ск

Alesis RA 300

Виталий Ск

Виталий Ск

Video thumbnail for Ремонт Alesis RA300 by Sound Works

Ремонт Alesis RA300

Sound Works

Sound Works

Reviews

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Alesis RA300.

Features and functionality

  • The Alesis RA-300 is recommended for Alesis Monitor One MKIIs, offering 150 watts into 4 ohms, ideal for most monitoring needs without exceeding 200 watts to avoid damage.

    Source
  • The direct/normal switch on the RA-300 might affect compatibility with different audio gear; experimenting with this switch can help solve signal chain issues.

    Source

Setup and maintenance

  • Ensure the power amp used is rated for 4 ohm speakers to prevent failure; older amps not rated for this may overload.

    Source
  • Power issues may arise if the RA-300 shares an outlet with high-consumption devices like air conditioners; isolating the amp's power supply can resolve this.

    Source

Comparisons

  • While the Alesis RA-150 is mentioned as a compatible option, it's noted that the RA-300 offers a higher power rating suitable for larger rooms or higher volume needs.

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User experience

  • An owner using a TOA P150D with Monitor One MKIIs reported low speaker volume, indicating potential power issues with older amps.

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  • Owners have reported that intermittent channel functionality can sometimes be resolved by increasing volume, suggesting a potential sensitivity to low signal levels.

    Source

Use cases and applications

  • Owners using the MBox 2 Pro as a preamp/interface for Ableton Live and direct guitar recordings find it pairs well with the Alesis RA-300 for a complete setup.

    Source

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