Yamaha SY77

$49.99 to $115.00 Price Tier: Budget

4.5 (18)

3 Critic Reviews

6 Reviews

Find out who is using Yamaha SY77

2 community setups

15 wishlisted

65 saved

Page last updated Jun 28, 2026

Pricing and availability

We compare 600+ stores and found this item at 2 stores. Prices updated June 28, 2026.

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Price

$49.99 Used

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5.0 (6)

$115.00 11 available Used

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Average Price: $83

Budget/Beginner

$500

$1501+

Price Tier

In the Synthesizers category, Yamaha SY77 is priced in the Budget/Beginner range. This is great gear to get started with or for creators on a budget.

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Description

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The Yamaha SY77 is a versatile synthesizer that captures the essence of digital sound innovation with its AFM (Advanced Frequency Modulation) synthesis. This keyboard blends FM synthesis with AWM (Advanced Wave Memory) sample-based synthesis, offering musicians an expansive palette of sounds. Whether you're a seasoned professional or an aspiring artist, the SY77 provides a solid platform for creating rich, dynamic compositions. With 61 velocity-sensitive keys, it allows for expressive performance and precise control over dynamics, making it ideal for a wide range of musical styles.

The SY77's intuitive interface, featuring a large LCD screen, provides easy navigation through its extensive sound library, which includes a variety of presets ranging from classic synthesizer tones to realistic acoustic instrument emulations. The onboard multi-effects processor enables you to further sculpt your sound with reverb, delay, and chorus effects, ensuring your music stands out in any mix. The synthesizer also supports MIDI connectivity, allowing seamless integration into any studio setup.

Key Features:

AFM (Advanced Frequency Modulation) synthesis combined with AWM sample-based synthesis
61 velocity-sensitive keys for expressive playability
Large LCD display for easy navigation
Onboard multi-effects processor with reverb, delay, and chorus
Extensive sound library with a variety of presets
MIDI connectivity for studio integration

Product specs

Brand	Yamaha
Model	SY77 Synthesizer
Finish	Black
Year	1989
Made In	Japan
Categories	Digital Synthesizers, Keyboard Synths
Analog / Digital	Digital
Key Size	Full Size
Keyboard Action	Synth Action
MIDI I/O	MIDI Input, MIDI Output, MIDI Through
Number of Keys	61 Keys
Polyphony	32 Voices

FAQs

What type of synthesis does the Yamaha SY77 use?: The Yamaha SY77 utilizes a hybrid synthesis engine combining Advanced FM (Frequency Modulation) synthesis with AWM (Advanced Wave Memory) sample-based synthesis, allowing for complex and rich sound creation.
How many keys does the Yamaha SY77 have and what is their action type?: The Yamaha SY77 features a 61-key full-size keyboard with a synth action, providing a responsive and dynamic playing experience.
Does the Yamaha SY77 have built-in effects?: Yes, the Yamaha SY77 includes 44 DSP effects spread across four processors, offering a wide range of sound processing options for creative sound design.
Is the Yamaha SY77 suitable for live performances?: With its robust build, 32-voice polyphony, and extensive sound design capabilities, the Yamaha SY77 is well-suited for live performances, offering versatility and reliability on stage.
Can the Yamaha SY77 be integrated with other MIDI devices?: Yes, the Yamaha SY77 is equipped with MIDI Input, Output, and Through, allowing it to be easily integrated with other MIDI-compatible devices for expanded musical setups.

Videos

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musictrackjp

YAMAHA SY77 Demo & Review [English Captions]

musictrackjp

Yamaha SY77 Preset Part. 1 | No Talking |

DKS SYNTH LAB

Nostalgia 1989: Yamaha SY77 [demo]

State Shirt

Synths that Time Forgot: The Yamaha SY-77 | Last FM Flagship Synth

Alamo Music Sound Lab

YAMAHA SY77 - Synth Demo | Sounds, Patches & Presets

synth4ever

Yamaha SY77 various patches demo

MIDERA

Yamaha SY77 Demo

Panu M Savolainen

Monster Synths: Yamaha SY77 Past The Presets

JimDaneker

YAMAHA SY77 (1989) - SOUND DEMO (No Talking, Only Playing)

Eaglechild

Reviews

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PROS

Exceptional build quality, durable like its predecessors
Combination of FM synthesis and sampled sounds for unique sonic capabilities
AFM (Advanced FM) allows for innovative sound creation
Can produce "out of this world" sounds with FM and sample mixing
Semi-weighted keybed offers outstanding playability
Good value for its price, offering high-end features affordably
Expandable through sound cards for more sound options
32 voice polyphony for complex arrangements
Sports a unique 6-operator FM synthesis with warm, analog-ish sounds
Supports external editing for easier sound programming

CONS

Some preset sounds may not be useful ("filler sounds")
Requires time and patience to learn complex programming
Unlit screen can hinder programming in poor lighting
Can be bulky and heavy for live performances
PCM sounds may feel dated to some users
Plastic end caps are prone to breakage if not handled carefully

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Yamaha SY77.

Setup and maintenance

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Replacing the SY77's floppy drive with a Gotek USB drive eliminates the buzzing sound from the LCD inverter, which is a common issue with the original display.
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The SY77's 1/4" outputs require adaptors to connect to standard 3.5mm speakers or a home stereo system using RCA inputs.
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Careful handling of synth outputs is crucial to avoid speaker damage when connecting to a home stereo, especially avoiding high volume during power cycling.
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The original EL-backlit display on the SY77 tends to fade over time, suggesting a potential need for replacement or upgrade to maintain usability.
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Features and functionality

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The SY77 supports aftertouch, but only mono aftertouch, not poly aftertouch, which is important for users considering it as a master keyboard.
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The headphone socket on the SY77 is better suited for connecting to computer speakers with a 3.5mm plug, needing fewer adapters than the main outputs.
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The SY77 allows modulation of FM operators with sampled waveforms, expanding its sound design capabilities beyond typical FM synthesis.
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Mods and upgrades

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Upgrading to a modern LCD display with white letters on a black background can eliminate the buzzing noise associated with the original backlight inverter.
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Replacing the original SY77 screen with an LED-backlit version improves display visibility and contrast but requires circuit modifications for optimal contrast.
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Comparisons

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The SY77 outputs full 0-127 velocity, unlike the DX7, which maxes out at 100, making it more versatile as a MIDI controller.
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The Yamaha W5, unlike the SY77, only features sample-based synthesis and lacks FM capabilities, making it less versatile for sound programming.
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Use cases and applications

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The SY77 is noted for its unique sound palette, ideal for creating visual novel soundtracks with FM synthesis and rompler-style sounds.
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Pairing the SY77 with Yamaha HS5 active speakers is recommended for singers needing clear sound during performances or practice sessions.
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The SY77's FM and AWM2 capabilities make it ideal for users interested in exploring both preset browsing and in-depth sound programming.
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Critic Reviews

Review of the Yamaha SY77 synthesizer

midera-artist.com

The Yamaha SY77 stands out as a powerful FM synthesizer with an impressive, thick sound that can evoke a range of emotions and imagery. Its interface and user experience are a mixed bag; while some may find the UI straightforward, others could be put off by the complexity and the outdated LCD screen that often requires replacement. The keybed is a highlight, praised for its smooth, responsive feel. However, the presets fall flat and are best discarded for fresh creations. RCM, touted as a feature, is dismissed as an unnecessary complication. Overall, the SY77 offers a rich sonic palette but demands patience and a willingness to navigate its quirks.

neutral

Full Review

Yamaha SY77 (SOS Jan 90)

muzines.co.uk

The Yamaha SY77 is a powerhouse synth that redefines versatility, combining FM and sample-based synthesis for an unrivaled sound palette. Its advanced FM capabilities and real-time convolution offer both simplicity and depth, making it a worthy successor to the legendary DX7. The interface is user-friendly, boasting a well-organized layout with a large LCD and intuitive controls. While the prototype model had some quirks, it never faltered in performance. However, the SY77 is hefty, and its internal storage could be more generous. Overall, the SY77 is a groundbreaking synth, providing expansive sonic potential and seamless integration of synthesis methods.

positive

Full Review

Yamaha SY77 music Synthesizer (1989) | Wolf Review

wolfarchitects.design

The Yamaha SY77, while a significant step forward in Yamaha's synth evolution, falls short of its iconic predecessor, the DX7. Its sleek design and professional features, like the built-in sequencer and effects processor, were innovative for its time. However, the design feels somewhat plasticky, with small buttons that age poorly. Although it didn't achieve the collectible status of the DX series, the SY77 remains a noteworthy piece of Yamaha's history. Its functionality and sound quality make it usable, yet it's overshadowed by the superior SY99. Overall, the SY77 is a mixed bag, appreciated for its ambitions but lacking the enduring legacy of its forerunners.

neutral

Full Review

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4.5 out of 5

Based on 6 Reviews and 18 Ratings

5 star

4 star

3 star

2 star

1 star

qwasar_trinity

283

about 6 years ago

Outstanding dual DX7II FM-machine!

I have one. Yes its too bulky and big synth, faded backlit display and a bit complex logic of the synthesis system. But the sound.. THE SOUND of it is just incredibly cool for the digital synth. I found some of the really nice libraries that have so analog-like sounding programs plus a bit of authentic sounds from the famous retro synths like a Roland D-50, Emulator II, Oberheim XA, Roland Juno and Jupiter series, Korg M1/Wavestation, Yamaha CS series ... I even didnt expected such a solid and really deep basses, beautiful motion pads and famous DX-pianos (i.e. FM-tines). Also me really like the keyboard feel. Back the day in 1989-1990 it was too expensive (Yamahas flagship synth) for most user. But today Its an affordable powerful synth workstation especially if you making the music with 80-90s taste or authentic retro-like game soundtrack with FM sounds. And yeah, the SY77 have such a fine design too!

Roles:

Keyboardist Composer Music Producer

Genres:

Electronic Rock Pop

From Gear Setup

speedydtm

254

about 7 years ago

Fantastic FM, good PCM

I've used the SY77 enough to have a solid opinion on it but not enough to have mastered it - so from my experience, it's one that I can recommend highly but keep in mind what you're getting. The PCM side of things is often very dated in a charming way, with not too many waveforms that have stood the test of time. The FM side is top notch however with one of Yamaha's most versatile and impressive engines, and the ability to combine it with PCM means you can make some truly unique sounds.

luke7fps

900

over 9 years ago

FM Synthesis + High Quality Samples: A beautiful multitasking synth

Sports a Unique, 6 Operator FM Synhtesis that sounds absolutely warm and analog-ish. Yamaha's AWM2 Sample Synthesis also add a bunch of lovely features like EP Attack Samples to stick over whit the FM Sounds, editing is really cozy thanks to the page jump and mark system. Add 4 Yamaha effect DSPs, 2 separate outputs, an awesome connectivity (MIDI, ROM and Waveform Cards, Floppy) and You'll have a beautiful synth, surprisingly warm-sounding for the age ('89)

jimmarchi1

41029

9 years ago over 9 years ago

I always wondered what the deal was with the 77.... now I want one, thanks

finetales

199

about 9 years ago

Huge!

It's an absurdly powerful synth that has both suped up DX 6-op FM capabilities as well as sampled waveforms, which you can combine freely. I use it live and at home and I would never be caught without its lush sound. Only disadvantage is that it is very big and very heavy, and for that reason I'm looking for a TG77 (rack mount version of the same synth) to replace it live and supplement it with additional polyphony at home.

Roles:

Keyboardist Composer

Genres:

Orchestra Disco Big Band