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Mesa/Boogie Simul-Class 2: Ninety Stereo Tube Power Amp

Mesa/Boogie Simul-Class 2: Ninety Stereo Tube Power Amp

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$1,311.74 Price Tier: Standard

5.0 (8)

2 Reviews

This product is Vintage or Discontinued

Find out who is using Mesa/Boogie Simul-Class 2:Ninety

3 wishlisted

9 saved

Page last updated Jul 07, 2026

Pricing and availability

We compare 600+ stores and found this item at 1 store. Prices updated July 7, 2026.

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5.0 (12)

$1,311.74 11 available Used

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Average Price: $1,312

Standard/Professional

$299

$1500+

Price Tier

In the Power Amplifiers category, Mesa/Boogie Simul-Class 2: Ninety Stereo Tube Power Amp is priced in the upper end of the Standard/Professional range. This is quality gear at a fair price point, suitable for beginners, hobbyists, and pros alike.

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Description

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Unleash the power of your sound with the Mesa/Boogie Simul-Class 2: Ninety Stereo Tube Power Amp. Known for its Simul-Class technology, this power amp offers a dynamic blend of Class A and Class AB amplification, delivering a rich, harmonically complex tone that musicians crave. Ideal for both studio and stage environments, it captures the essence of tube-driven warmth with unparalleled clarity and presence.

The 2: Ninety is a favored choice among professional musicians, offering the versatility to handle anything from the subtlest of jazz tones to the most aggressive rock riffs. Its dual-channel, stereo configuration allows for seamless integration into any rig, making it a flexible companion for various musical styles and setups. With its robust construction, you can rely on it for consistent performance gig after gig.

This power amp is designed with the seasoned musician in mind, featuring user-friendly controls and reliable performance under demanding conditions. Whether you're pushing your gear to the limits on stage or laying down tracks in the studio, the Simul-Class 2: Ninety ensures your sound is delivered with precision and authenticity.

Key Features:

Simul-Class technology for a blend of Class A and Class AB output stages
Dual-channel, stereo configuration for versatile rig integration
Tube-driven design for warm, rich tonal characteristics
Robust construction for reliable performance
Ideal for both studio and live sound applications

Product specs

Brand	Mesa Boogie
Model	Stereo Simul-Class 2:Ninety 2-Channel 90-Watt Power Amplifier
Finish	Black
Year	1992 - 2013
Made In	United States
Categories	Power Amplifiers
Electronics	Tube
Number of Channels	2

FAQs

What is the power output of the Mesa/Boogie Simul-Class 2: Ninety Stereo Tube Power Amp?: The Mesa/Boogie Simul-Class 2: Ninety Stereo Tube Power Amp delivers 90 watts of power per channel, providing ample output for live performances and studio use.
Does the Mesa/Boogie Simul-Class 2: Ninety support stereo operation?: Yes, the Mesa/Boogie Simul-Class 2: Ninety is designed for stereo operation, featuring two channels that allow for a rich and immersive sound experience.
What type of tubes does the Mesa/Boogie Simul-Class 2: Ninety use?: The Mesa/Boogie Simul-Class 2: Ninety utilizes tube electronics, providing the warm, dynamic sound characteristic of tube amplifiers, which is highly valued by musicians for its tone quality.
Is the Mesa/Boogie Simul-Class 2: Ninety suitable for live sound applications?: Yes, the Mesa/Boogie Simul-Class 2: Ninety is well-suited for live sound applications, offering robust power and reliable performance that can handle the demands of live performances.
What are the connectivity options for the Mesa/Boogie Simul-Class 2: Ninety?: The Mesa/Boogie Simul-Class 2: Ninety features standard input and output connections suitable for integration into most professional audio setups, allowing for versatile use in various sound systems.

Videos

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Daniel Krämer

Mesa Triaxis w/ Mesa 2 ninety poweramp - best rack preamp/poweramp ever?

Daniel Krämer

Mesa Boogie-MarkV head vs Triaxis & Simul Class 2:90 (Mark iV mode comparison)

Peter Glavanov

Follow the Wires - Mesa Boogie 2:Ninety / No Preamp?

Carolina Custom Guitars

Quick test—Mesa Boogie Simul-Class 2:90 stereo power amp

mentoneman

Mesa Boogie Stereo Simul class 2 ninety

VintageLab Silvio Pinheiro

Reviews

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PROS

Known for its loud, fat, and honking tone that stands out
Provides a tight attack and clear low end for dynamic performances
Three voicing options (Modern, Deep, Half-Drive) offer versatile sound customization
Excellent for use with modelers, providing monstrous tones and punch
Features Smart Power for intelligent control and flexibility
Simul-Class design offers a blend of Class AB and Class A tones
Functions well without a preamp, serving as a solid pedalboard platform
Used by renowned bands, enhancing its credibility and appeal
Delivers a complex and gorgeous tone ideal for finesse players
Offers a punchy and powerful experience, surpassing other rack mount amps

CONS

Lacks ability to switch out of Simul-Class to Class-A mode
Requires a separate footswitch to activate different voicings

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Mesa/Boogie Simul-Class 2: Ninety Stereo Tube Power Amp.

Comparisons

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The Simul-Class 2:90 is praised for its ability to handle instrument level signals directly, making it ideal for use with an Axe FX 3.
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The Mesa 2:90 is compared to the Matrix GT1000FX, with owners noting the Mesa's "tube magic" as a standout feature despite its heavier weight.
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Features and functionality

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The 2:90 offers two channels, adding versatility for users needing different sound profiles.
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The 2:90 allows direct guitar input at instrument level, offering a great clean sound, though it's not optimal for Axe FX input.
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User experience

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Owners highlight the unit's exceptional low-end response, which is particularly appealing for those seeking a powerful bass presence.
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Some owners express reluctance to sell their units, underlining a strong user satisfaction and attachment to the amp.
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Owners appreciate using MIDI switchers, like the Voodoo Control, to control the 2:90’s voicings, enhancing versatility during performances.
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Value and pricing

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In 2009, the price was similar to current offerings, indicating stable value over time, with some suggesting a market price around $1,200 today.
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Use cases and applications

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Although rack gear popularity fluctuates, the 2:90 is noted for a potential resurgence in its niche market.
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Running the 2:90 with deep and modern voicings is preferred for most styles, but users switch to deep-only for melodic songs.
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Setup and maintenance

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The Mesa 2:90 is noted for consuming tubes, costing approximately $230 for retubing every 8 to 10 years.
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5.0 out of 5

Based on 2 Reviews and 8 Ratings

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peterglavanov

713

over 9 years ago

Mesa Boogie Simul class 2:Ninety

Mesa Boogie Simul class 2:Ninety is a dream power aplifier. More than stereo soul, the 2:90 also has brains: the intelligence of Smart Power puts you in control. Three voicing jacks take their cues from the TriAxis External Switching Jacks under midi or can be triggered by any tip-to-ground switcher. Deep extends the bottom for huge low end; Half-Drive knocks down the watts for a low power clip; and Modern brings forward an aggressive top end for tight tracking crunch.

Simul-Class magic comes from the pairing of two separate and different power amps working together simultaneously to produce one gorgeous tone. For each channel, one pair of 6L6s operates in Class AB delivering punch and headroom. Meanwhile, the other two impart the sweetness and warmth of mystical Class A circuitry. So if you're a finesse player seeking three-dimensional refinement, you'll want the Simul-Class 2:Ninety as the foundation of your rack tone.