AudioFu Chart · October 2026
Best Guitar / Bass Synthesizers for Intermediate 2026
The top pick is Boss SY-200 Synthesizer ($338). Electro Harmonix KEY9 Electric Piano Machine gives you the most for the money at $241. Boss VG-800 V-Guitar Processor leads the high end. Ranked by the AudioFu Index from 18 models across 8 brands, prices checked every night.
Last updated: October 19, 2026
Top 10
Full detail for the 10 highest AudioFu Index scores. Every other model is listed below.
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The SY-200 is a surprisingly capable synthesizer pedal, offering a huge palette of sounds in a relatively small footprint. It’s a great option for guitarists wanting to explore synth textures without needing a full-blown synth setup – especially those in rock, pop, and electronic music. It's a very accessible entry point into the world of guitar synthesis.
Pros
- Excellent tracking, even with humbuckers, minimizes pitch drift issues.
- Polyphonic capabilities unlock a wide range of synth textures, far beyond monophonic synths.
- Compact size and robust Boss build quality make it stage-ready and durable.
Cons
- Limited preset editing depth compared to dedicated synth workstations.
- Can be CPU-intensive, potentially impacting latency with other effects.
63AudioFu
IndexStableno change since Aug 17Aug 17$338 now$338€300 at Thomann · in stockCheck price ↗ -
Electro Harmonix KEY9 Electric Piano Machine
97 for sale on Reverb1 finish at Thomann
The KEY9 is a surprisingly fun and creative tool for guitarists and keyboard players wanting to explore classic electric piano tones. It's a fantastic way to add vintage vibes to your rig, especially if you're looking for a compact and affordable solution without needing deep editing capabilities. This is ideal for songwriters and gigging musicians seeking a quick and easy way to add a unique sonic texture.
Pros
- Excellent emulation of classic electric pianos, surprisingly nuanced sounds
- Fast tracking handles guitar input with impressive responsiveness
- Compact size makes it pedalboard-friendly and travel-easy
Cons
- Limited preset customization beyond the available sounds
- Build quality feels somewhat plasticky, not as robust as some EHX pedals
62AudioFu
IndexStableno change since Aug 17Aug 17$241 now$241€214 at Thomann · in stockCheck price ↗ -
The Electro Harmonix MEL9 is a clever little box that delivers a surprisingly authentic Mellotron experience in a pedal format. It's a great option for keyboardists, guitarists, or bassists wanting that classic, layered sound without lugging around a giant Mellotron. Perfect for adding vintage textures to modern productions or live performance.
Pros
- Authentic Mellotron vibe without the massive footprint and cost
- Fast tracking avoids pickup compatibility headaches – a huge win
- Independent dry/effect controls allow for subtle blending or full emulation
Cons
- The attack knob can be finicky, requiring precise adjustments
- Sound quality, while convincing, isn't a true vintage Mellotron
60AudioFu
IndexStableno change since Aug 17Aug 17$253 now$253€225 at Thomann · in stockCheck price ↗ -
Boss GK-5 Divided Guitar Pickup
GK-5B Bass Synth Pickup · Boss
11 for sale on Reverb3 finishes at Thomann
The GK-5B is a solid upgrade for players using Boss synth systems, offering better tracking than previous models. It’s a straightforward solution for triggering synth sounds from your bass, but remember it's a pickup *feeding* a synth—the synth itself does the heavy lifting. Ideal for synth bass enthusiasts looking for reliable, professional-grade performance.
Pros
- Serial GK interface offers significantly improved tracking stability compared to older systems.
- Slim profile minimizes impact on string spacing and bridge access on most basses.
- Robust construction; feels solid and well-built for gigging reliability.
Cons
- Requires a dedicated Serial GK cable (BGK-15) for operation, adding to the initial investment.
- Sound quality heavily reliant on the synthesizer unit it's paired with; pickup itself is just a transducer.
59AudioFu
IndexStableno change since Aug 17Aug 17$255 now$255€227 at Thomann · in stockCheck price ↗ -
- Strings6-string
The GK-3B is a solid upgrade over the older GK2B, offering a smaller footprint and improved adjustability. It's a great option for bassists who want to expand their sonic palette and experiment with synth sounds, provided they have a compatible sound module to pair it with – it’s a gateway to a whole new world of tonal possibilities.
Pros
- Compact housing significantly reduces intonation issues compared to the GK2B
- Adjustable inter-magnet spacing accommodates diverse string spacing
- Larger jack socket provides a more secure and reliable connection
Cons
- Tracking can still be susceptible to interference from other electronics
- Requires careful setup to avoid unwanted string noise and artifacts
52AudioFu
IndexStableno change since Aug 17Aug 17$215 now$215€191 at Thomann · in stockCheck price ↗ -
Boss GKC-AD Analog-to-Digital GK Converter
GKC-DA GK Converter · Boss
10 for sale on Reverb1 finish at Thomann
This little box is a lifesaver if you're rocking a vintage GK-5 or GM-800 and want to tap into newer Boss synth capabilities like the SY-1000. It's a straightforward solution, though be aware of potential latency. Perfect for players wanting that classic synth bass sound without replacing their older gear.
Pros
- Enables modern synth control with legacy GK pickups.
- Provides a crucial bridge between older and newer Boss systems.
- Instrument input expands versatility beyond synth routing.
Cons
- Limited to Serial GK systems; incompatible with standard GK.
- Adds another power supply dependency to your rig.
48AudioFu
IndexStableno change since Aug 17Aug 17$190 now$190€169 at Thomann · in stockCheck price ↗ -
- Strings6-string
The Triple Play Express is a clever entry point into guitar-based MIDI synthesis. It’s fantastic for guitarists curious about exploring virtual instruments without complex modifications or a huge investment, especially those wanting a straightforward, portable setup. While it's not a replacement for a full-blown MIDI keyboard rig, it’s a surprisingly capable tool for sketching out ideas and creating unique sounds.
Pros
- Magnetic pickup installation avoids guitar modification, a huge convenience for many.
- USB-C connectivity offers modern, reliable data transfer and power options.
- Fishman’s pitch tracking is notably responsive, minimizing latency for real-time playing.
Cons
- Limited to 6-string guitars; nylon-string classical guitars are incompatible.
- The controller’s small size can be awkward for players with larger hands.
47AudioFu
IndexStableno change since Aug 17Aug 17$213 now$213€189 at Thomann · in stockCheck price ↗ -
Boss GKC-AD Analog-to-Digital GK Converter
GKC-AD GK Converter · Boss
10 for sale on Reverb1 finish at Thomann
Okay, so you've got a vintage Roland guitar or bass with those classic 13-pin GK pickups, but you’re wanting to use it with newer BOSS synth pedals? This little box is your bridge. It’s a clever and surprisingly well-built solution for getting that legacy GK signal into a modern digital workflow – essential for serious synth bass players.
Pros
- Seamlessly integrates legacy GK pickups with modern BOSS synths
- Preserves the original GK pickup's characteristic tone and response
- Instrument output allows for parallel signal path and normal operation
Cons
- Adds another box to your signal chain, increasing clutter
- Limited to compatibility with Serial GK systems; older Roland systems not supported
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The DOD Meatbox is a fun, focused pedal for adding serious low-end rumble to your guitar or bass. It's a reissue, so it nails that classic, gritty synth bass vibe, but don't expect a ton of tonal flexibility. Perfect for metal, industrial, or anyone wanting a quick dose of sub-bass mayhem.
Pros
- Robust aluminum housing provides excellent durability for gigging.
- Improved circuitry delivers a noticeably tighter, more defined subharmonic.
- True bypass preserves your signal when the effect is disengaged.
Cons
- Limited control over subharmonic decay can lead to muddiness at higher settings.
- The Meatbox's character is very specific; not a versatile all-rounder.
32AudioFu
IndexStableno change since Aug 17Aug 17$168 now$168€149 at Thomann · in stockCheck price ↗ -
- Strings12-string
The VG-800 is a serious upgrade for V-guitar enthusiasts. It's a powerful tool for expanding your sonic palette, offering incredible realism and flexibility, especially if you're into layering or creating unique hybrid sounds. This is ideal for studio players and gigging musicians wanting a versatile and expressive synthesized guitar voice.
Pros
- Advanced GK interface offers vastly improved tracking accuracy.
- Dual guitar/bass function expands creative possibilities significantly.
- BOSS Tone Studio software provides comprehensive sound editing and organization.
Cons
- Requires a GK pickup (GK-5 or GK-5B), adding to the overall investment.
- The unit's size and weight can be cumbersome for pedalboard setups.
72AudioFu
Index↓ 1.0%since Aug 17 · lowest so far$689 · Aug 17$682 now$682€606 at Thomann · in stockCheck price ↗
All 18 guitar / bass synthesizers
Same index, same nightly prices — compact. Colour options of one model share a row. Tap a photo to zoom.
- 11
Boss GM-800 Guitar SynthesizerBoss · 2 finishes66Stable$698€620$698€620Check ↗
- 12
Boss SY-1000 Guitar SynthesizerBoss · 2 finishes63Stable$1,124€999$1,124€999Check ↗
- 13
Roland GR-55S BlackRoland · 3 finishes62Stable$752€668$752€668Check ↗
- 14
Klowra South Zoo Voice SynthKlowra32Stable$111€99$111€99Check ↗
- 15
Mooer E7 Polyphonic Guitar Synth.Mooer32Stable$111€99$111€99Check ↗
- 16
Roland GKC-10Roland37Stable$91€81$91€81Check ↗
- 17
Roland GKC-5Roland37Stable$78€69$78€69Check ↗
- 18
Meris Enzo X Black Limited Ed.Meris32Stable$843€749$843€749Check ↗
Guitar/Bass Synthesizers by the numbers
Measured across all 24 models we track, not a sample.
Median $262 — half of all guitar/bass synthesizers here cost less.
How to choose the best guitar/bass synthesizers
Playability/Tracking
How well the synth tracks your playing. Sloppy tracking leads to frustrating, unmusical results. We're looking for responsive tracking, especially in lower registers and with fast passages.
Ease of Use/Interface
Synth engines can get complicated fast. We're prioritizing units with intuitive interfaces and a reasonable learning curve - no endless menus just to tweak a simple filter sweep.
Sound Palette
Does it offer a variety of usable sounds? A good synth isn't just about one cool patch; it's about versatility for different genres - pads, leads, basses, textures - without sounding like a cheesy preset.
Latency
This is critical. High latency makes playing feel sluggish and out of sync. Anything over 10ms is noticeable and will impact your feel, especially for fast playing.
Expression/Dynamics
Can you actually shape the sound with your playing? A synth that ignores your dynamics is just a pre-programmed noise generator. We're looking for responsiveness to pick attack, volume swells, and aftertouch.
Buying guide
So, you're past the basic chorus and delay, and you're itching to explore synth sounds with your guitar or bass? It's a cool move, but it's not always as straightforward as it looks. A lot of synth pedals aimed at pros are overly complex, or the playability is just...off. This list is for players who want to dive into synthesis without needing a PhD in modular synths or wrestling with a neck that feels like a telephone pole.
Mid-range synth pedals often cut corners on tracking algorithms to keep costs down - be prepared for some compromises. Don't get seduced by endless knobs if you can't figure out what they do. Prioritize playability and a manageable interface over a huge number of features you'll never use.
A bit of latency is almost unavoidable, but look for units with good latency compensation or that offer a 'glide' function to mask it.
How the AudioFu Index works
Five measured signals and nothing else — no stars from strangers, no “tested by experts” we didn’t do. The weights are fixed and public. We don’t play these instruments; we measure the market around them.
This chart covers 24 guitar/bass synthesizers from the Thomann catalogue. Before you buy, read hands-on reviews and, where you can, play it. Full methodology.
AudioFu earns a commission when you buy through our Thomann links. It never changes the order — the index does.
- Demand40%
How many of this exact model are for sale on Reverb right now — what musicians actually buy and resell.
- Lineup20%
How many finishes Thomann stocks — makers expand the models that sell.
- Price15%
Where the price has moved since we started tracking in August.
- Specs15%
How completely the maker documents it.
- Maker10%
How deep the brand’s range is in this category.
Questions
What's the difference between a guitar synth and a modeling pedal?
A guitar synth uses a signal processor to emulate synth sounds, often relying on tracking your played notes. Modeling pedals simply recreate the sound of existing amplifiers and effects. They're different beasts with different strengths.
Do I need a special guitar or bass?
Not necessarily! Many units work well with standard pickups, but a hex pickup or GK pickup will generally give you the best tracking and most accurate results. It's an investment if you're serious.
What about latency? How much is too much?
Ideally, under 10ms. 10-20ms is playable but might feel a little sluggish. Anything above 20ms becomes a real problem, especially for fast playing or bass. Look for pedals with latency compensation features.
Can I use a synth pedal with my amp or directly into a PA?
Both! Running it into an amp gives you a more traditional guitar/synth hybrid tone. Direct to PA is great for studio recording or adding synth textures to a live sound system. Just be mindful of headroom.
I'm a bassist - are these pedals suitable for bass?
Many are! Bass frequencies are harder to track accurately, so look for units specifically designed for bass or known for good low-end response. A wider frequency range is key to getting a solid, defined low-end thump.
