Fifty

^# 14

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$597.08 Price Tier: Standard

4.5 (7)

3 Reviews

This product is Vintage or Discontinued

Find out who is using Mesa/Boogie Fifty/Fifty

1 community setup

0 wishlisted

9 saved

Page last updated Jul 04, 2026

Pricing and availability

We compare 600+ stores and found this item at 1 store. Prices updated July 4, 2026.

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Reviews

Price

5.0 (2)

$597.08 9 available Used

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Average Price: $352

Standard/Professional

$299

$800+

Price Tier

In the Guitar Power Amplifiers category, Mesa/Boogie Fifty/Fifty is priced in the Standard/Professional range. This is quality gear at a fair price point, suitable for beginners, hobbyists, and pros alike.

Budget

Standard

High-end

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Description

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The Mesa/Boogie Fifty/Fifty is a powerhouse of versatility in the world of guitar power amplifiers. Perfectly bridging the gap between raw power and nuanced tone control, this amp is a favorite among professional musicians who demand reliability on stage and in the studio. Known for its dual-channel configuration, the Fifty/Fifty offers 50 watts per channel, delivering a robust presence that can handle both intimate gigs and larger venues with ease. Its all-tube design ensures warm, dynamic sound reproduction with the kind of character that tube amplifiers are cherished for.

This amplifier is equipped with a user-friendly interface, featuring individual presence controls for each channel, allowing for precise tonal shaping. The Mesa/Boogie Fifty/Fifty also includes fan cooling to maintain optimal operating temperatures, ensuring that your performance remains uninterrupted. Its rack-mountable design makes it a convenient choice for those with existing setups looking to expand their sonic possibilities without adding clutter.

Whether you're a seasoned guitarist looking to elevate your sound or a studio engineer seeking a reliable power solution, the Mesa/Boogie Fifty/Fifty offers a compelling blend of power, tone, and durability.

Key Features:

Dual-channel configuration with 50 watts per channel
All-tube design for warm, dynamic sound
Individual presence controls for precise tonal shaping
Fan-cooled for optimal performance and reliability
Rack-mountable for easy integration into existing setups

Product specs

Brand	Mesa Boogie
Model	Fifty/Fifty 2-Channel 50-Watt Power Amplifer
Finish	Black
Year	1986 - 2010
Made In	United States
Categories	Power Amplifiers
Electronics	Tube
Number of Channels	2

FAQs

What type of tubes does the Mesa/Boogie Fifty/Fifty power amplifier use?: The Mesa/Boogie Fifty/Fifty power amplifier uses 6L6 tubes, which are known for their robust, warm sound and are commonly used in guitar amplifiers for their reliability and tonal qualities.
Is the Mesa/Boogie Fifty/Fifty suitable for live performances?: Yes, the Mesa/Boogie Fifty/Fifty is a 50-watt power amplifier with two channels, making it suitable for live performances where robust and dynamic sound is required.
How does the Mesa/Boogie Fifty/Fifty handle different speaker cabinets?: The Mesa/Boogie Fifty/Fifty is designed to work well with a variety of speaker cabinets, offering flexibility with its dual-channel output, allowing users to match it with different cabinet configurations for optimal sound.
Can the Mesa/Boogie Fifty/Fifty be used for both guitar and bass amplification?: While primarily designed for guitar amplification, the Mesa/Boogie Fifty/Fifty can also be used for bass, though it may not deliver the low-end response typically desired for bass amplification compared to dedicated bass amps.
What makes the Mesa/Boogie Fifty/Fifty unique compared to other power amplifiers?: The Mesa/Boogie Fifty/Fifty is unique for its all-tube design, dual-channel configuration, and the ability to deliver a warm, dynamic tone that is highly sought after by guitarists for both live and studio settings.

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Reviews

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PROS

Legendary status with a wide range of genre versatility
Pairs excellently with Mesa Boogie TriAxis and other preamps
Maintains natural tone with minimal coloring
Reliable performance, both live and in the studio
Powerful output without needing high gain for quality tone
Exceptional sustain compared to competitors
Smooth, dark tone ideal for late 80's/early 90's music
Effective with various instruments beyond guitar

CONS

Aesthetics may not appeal to all
Noticeable fan noise

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Mesa/Boogie Fifty/Fifty.

Setup and maintenance

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Valve guide keys can break during shipping; check carefully to avoid fuse blowouts.
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Older units, like those from 1992, can have functioning original caps despite age.
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When using the Fifty/Fifty in mono, ensure the level on the unused channel is set to 0 and presence is maximized for optimal performance.
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Owners suggest using Tungsol 6L6GC tubes for optimal performance after repairs.
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Features and functionality

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Treble on Mark series amps adds gain; rhythm channel volume affects lead channel gain.
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In stereo mode, connect the 8 ohm power amp output to the 16 ohm cabinet input; Mesa amps handle impedance mismatches well.
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The Fifty/Fifty can operate in a wet/dry configuration if effects are not connected to both returns.
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Comparisons

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The 2:90 power amp is favored over the Fifty/Fifty by some users for its sound quality.
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Use cases and applications

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The Fifty/Fifty is described as "loud as hell" and may require volume control in apartment settings.
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Owners recommend alternating between the A and B sides of the power amp to ensure even tube wear over time.
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Pairs well with a Mesa Quad Preamp for versatile sound options, including stereo setups with 2x12 cabinets.
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User experience

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Owners report regret after selling their Fifty/Fifty due to its unique sound and build.
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Users find Mesa Boogie's customer support somewhat inconsistent, advising to clarify settings over the phone due to potential inaccuracies in written responses.
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Users highlight the combination of the Mesa Fifty/Fifty with a Triaxis or Quad Preamp as a dream rig for rich, aggressive tones.
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4.5 out of 5

Based on 3 Reviews and 7 Ratings

5 star

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3 star

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1 star

karl321

557

over 5 years ago

Excellent (except the fan noise)

I'm a huge fan of bands that were famous in the late 80's and early 90's like Nirvana, Van Halen, Smashing Pumpkins, Weezer, etc. This power amp along with the Mesa Boogie studio preamp and my chorus pedal and modded boss ds-1 nails the tone for all of them. That's something I can't say for any Marshall, Fender of Vox brand amplifier that I've tried so far.

I run it through the cabinet of my Fender Twin Reverb because I don't have a proper cabinet, and the main difference between the two amp sections is that the Mesa Boogie is much darker and smoother than the Twin. The bright lead channel on the Boogie is very similar to the dark channel on the Twin (with a boss ds-1 added), but the Boogie is still slightly darker, even then. The Twin has a sharp attack on notes, which gives it the illusion of having almost no sustain, whereas the Mesa Boogie sustains for a very long time.

Plugging my Fender Rhodes straight into this, even without a preamp, with a chorus pedal gives a heavenly tone with the Twin cab.

Basically, I feel like this would be the perfect guitar amp if they gave some consideration to the aesthetics and if it wasn't for the fan noise.

dalik_simecka

155

over 2 years ago

Universal power amp

this power amp from Mesa Boogie is simply amazing with the TriAxis preamp I'll keep this stuff for a long time just because it's a legendary weapon for any genre :)))

Roles:

Guitarist

Genres:

Electronic Rock Metal

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