Donner Ultimate Comp

$37.99 to $39.99 Price Tier: Budget

4.0 (11)

1 Critic Review

3 Reviews

Find out who is using Donner Ultimate Comp

5 community setups

2 wishlisted

43 saved

Page last updated Jun 12, 2026

Pricing and availability

We compare 600+ stores and found this item at 2 stores. Prices updated June 12, 2026.

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Reviews

Price

$37.99

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4.0 (9)

$39.99 2 available New

$17.00 16 available Used

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Average Price: $32

Budget/Beginner

$50

$201+

Price Tier

In the Compressor Effects Pedals category, Donner Ultimate Comp is priced in the Budget/Beginner range. This is great gear to get started with or for creators on a budget.

Budget

Standard

High-end

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Description

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Enhance your guitar's dynamics with the Donner Ultimate Comp, a versatile compressor pedal designed for musicians who crave precision and clarity in their sound. Known for its ability to smooth out your playing, this pedal ensures that your quiet notes are just as audible as your loudest ones, providing a balanced output across the board.

The Donner Ultimate Comp is equipped with an advanced OTA (Operational Transconductance Amplifier) technology, delivering a warm and smooth compression that's well-suited for both live performances and studio recordings. This pedal is crafted to give you the flexibility to shape your tone, whether you want a subtle sustain or a pronounced punchiness.

Its straightforward controls make it easy to dial in the perfect amount of compression with knobs for Level, Tone, and Comp. The pedal's true bypass design ensures your signal remains pristine when the pedal is disengaged, and its durable construction promises reliability on stage and off. With the Donner Ultimate Comp, fine-tuning your sound has never been easier, making it an ideal choice for guitarists of all levels.

Key Features:

Advanced OTA technology for smooth and warm compression
Controls for Level, Tone, and Comp allow for easy tone shaping
True bypass design ensures signal integrity
Durable construction for reliable performance
Suitable for live and studio settings

Product specs

Brand	Donner
Model	Ultimate Comp
Finish	Blue
Year	2010s
Categories	Compressor Pedals
Pedal Format	Mini

FAQs

What type of power supply does the Donner Ultimate Comp require?: The Donner Ultimate Comp requires a standard 9V DC power supply, which is common for many guitar pedals. It is important to ensure the power supply provides at least 100mA of current.
Is the Donner Ultimate Comp suitable for use with both electric guitar and bass?: Yes, the Donner Ultimate Comp is suitable for both electric guitar and bass, providing smooth compression and enhanced sustain for both instruments.
How does the mini pedal format of the Donner Ultimate Comp affect its use on a pedalboard?: The mini pedal format of the Donner Ultimate Comp allows it to fit easily on crowded pedalboards, making it an ideal choice for guitarists with limited space.
What are the main tonal characteristics of the Donner Ultimate Comp?: The Donner Ultimate Comp is known for its smooth compression, enhancing sustain and evening out dynamics without overly coloring the tone of your instrument.
Can the Donner Ultimate Comp be used for live performances?: Yes, the Donner Ultimate Comp is designed to be robust and reliable, making it suitable for live performances where consistent sound and dynamics are crucial.

Videos

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intheblues

Donner Ultimate Comp Compressor Pedal

intheblues

Donner Ultimate Comp

shnobel

Donner Ultimate Comp Guitar Pedal Review by Steve Stine

Steve Stine Guitar Lessons

Donner - Ultimate Comp - Compressor Demo

Ryan Lutton

SURPRISING! DONNER COMPRESSOR GUITAR PEDAL - Sounds GREAT at an Under $50 Price!

Tran Bros

Donner Ultimate Comp on Bass

The Nerd Bass

Donner Ultimate Comp Pedal Demo

Naz Pro

Donner Ultimate Comp Review (With Overdrive Examples)

GrowWithGuitar

Reviews

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PROS

Keeps volume in balance effectively
Functional, user-friendly, and durable design
True bypass when not engaged, versatile with other pedals
Delivers a full sound, especially good for single coil guitars
Provides a squished sound and normalizes peaks well
Comparable to higher-priced compressors at a fraction of the cost
Adds color and presence to the sound
Can serve as a boost with adjustable tone settings
Suitable for live performances

CONS

Not as powerful as some higher-end models
May introduce unwanted signal breakup with high-output pickups
Tone switch labeling may be reversed on some units
Requires tweaking to avoid sound coloration in pedal chains

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Donner Ultimate Comp.

Features and functionality

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The Donner Ultimate Comp is noted for its treble switch, enhancing finger-picking tones, especially making a Strat sound like a country Telecaster.
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The Donner Ultimate Comp can act as a boost due to its loud, trebly output, enhancing tapping techniques.
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The Donner Ultimate Comp is reported to replace highs better than other compressors, enhancing tones with single coils and P90s effectively.
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Build quality

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Some owners report reliability issues, such as the pedal clipping at low compression values after frequent use.
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Comparisons

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The Mooer Yellow Comp is frequently mentioned as an alternative, being an exact clone of the Diamond Compressor sans treble switch.
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The Empress compressor is highlighted as superior in performance, especially for achieving a squashed sound effect, though it's a FET, not optical.
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Compared to the DynaComp, it's preferred after dirt pedals for limiting volume spikes.
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Although not truly an optical compressor, the Donner Ultimate Comp is praised for its surprising sound quality compared to expectations set by its Amazon listing.
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Value and pricing

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The Diamond Compressor's price is often criticized as not justifiable when compared to the more cost-effective Donner Ultimate Comp.
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Use cases and applications

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The Donner Ultimate Comp is favored for its natural, transparent optical compression, suitable for studio-like warmth in live settings.
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Works well in chains as a sustainer, being placed first to bring oomph to other pedals.
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Users find the Donner Ultimate Comp particularly effective with P90 pickups when used with higher compression settings, enhancing tonal clarity.
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Other

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Some debate exists over whether the Ultimate Comp is genuinely an optical compressor, with conflicting information found in different sources.
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User experience

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Owners appreciate its compatibility with a variety of setups, particularly for achieving J-Rock mathrock tones.
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Owners appreciate the versatility of the Donner Ultimate Comp, noting its capability to handle both single coil and humbucker pickups well, with minimal adjustments needed.
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Critic Reviews

Donner Ultimate Comp Review

compressorpedalreviews.com

The Donner Ultimate Comp shines as a compact and budget-friendly compressor, delivering clean and transparent compression with a solid build quality. Priced at just $38, it impresses with its intuitive controls and versatility, suitable for both subtle leveling and heavier limiting. However, it lacks some advanced features like independent ratio, attack, release, and threshold controls, and may distort at extreme settings. While the EQ circuit is not its standout feature, the pedal's overall quiet operation and form factor make it an excellent choice for musicians seeking affordable, always-on compression.

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4.0 out of 5

Based on 3 Reviews and 11 Ratings

5 star

4 star

3 star

2 star

1 star

kinggrey

201

almost 9 years ago

Decent pedal, well worth the money.

This pedal is definitely good for bringing up the volume of your single-coiled guitars with high-compression, or for evening out the volume of chords with humbuckers at low compression. But trying to use compression above 10 or 11 o' clock with humbuckers or high-output pickups in general results in a breaking up of the signal that just doesn't sound good to my ears. But it IS well worth the money.

pandacup

263

over 8 years ago

Cheap but High Quality

Very basic sounding but delivers a great tone. Can't go wrong for the price. My friend recommended Donner to me and they're great for live performances. It really helps get a great tone with a single coil and breaks up the sound nicely, as well as giving clarity to each string.

Roles:

Guitarist

Genres:

Rock Pop Blues