The Boss SY-1 is absolutely fantastic – as long as you like at least some of the 121 presets. Just plug it in and get playing! It takes five seconds to learn how to scroll through the sounds, and maybe two minutes to learn what the parameter dials do. Here’s what you need to know, right out of the box: Effect, the smaller knob on the left, is the volume for the synth signal – turn it down if the synth effect is too loud. Direct, the larger knob on the left, is the volume for the source signal (your guitar, or whatever). Use these two together as your mixer.Most of these sounds are too 80’s synth-y for me, and there are some in the SFX and SEQ sets that I wouldn’t touch with a ten-foot pole. That’s perfectly OK though, because there are at least twenty voices that I really like – Bell 7, plus reverb and chorus from my pedalboard, is my favorite voice for chords.There’s really nothing to dislike about the SY-1 (unless you dislike the sounds). What it doesn’t do – and why I’ll probably upgrade to the SY-200 – is save your settings. Switching sounds means changing parameters, most of the time. For the price though, you won’t do any better. It’s a Boss, which means as long as you don’t drive over it with a truck or drop it from the Eiffel Tower, it’ll last forever.Update: I upgraded to the SY-200, and whoa Nelly it's worth the extra hundred bucks. Fifty more voices, including decent rotary organ voices (better than the SY-1), and the ability to save your presets.

I've had mine for a little over a month now and I'm still finding cool things to do with it. It does all the stuff I hoped it would do. Pairs well with reverb pedals. I wouldn't recommend it if you're new to pedals or don't have specific effects in mind. Great if you're into classic synth sounds. The Send and Receive adds another level to what you can do with it.I would recommend watching demos on YouTube before you buy so you know what you're getting into. Luckily there are dozens of videos to help with the learning curve.

I have men using EHX “9” series pedals to create Live Loops for my one man band gigs. I thought they were great until I tried this SY-1 to cut down on pedalboard real estate. I have already found some very useable sounds. The bass sounds are great as are the organ and “bell” sounds. I have not yet found a string or pad that works in my set’s but I have only scratched the surface. The one thing this does not do that the Bass 9 does is have a split patch so I can comp and play live bass. That’s a drag sometimes but for making loops in the fly it just means I can’t play bass and shorts simultaneously. For what is does without a divided PU, it’s spectacular. I use this with Nylon String Guitar.

I really struggled with my final rating for the BOSS SY-1 Synthesizer pedal because while it does have a few shortcomings that warrant the 4-star rating, it's also an incredibly advanced (and compact) piece of effects circuitry and a lot of fun!When it comes to the basic concept of the SY-1 and technical execution thereof, the SY-1 is a 5-star product. Pretty much since the birth of MIDI (or the development of analog synths prior to that), there have been efforts to translate guitar playing inputs into real-time synthesizer tones. Many of these early efforts were plagued by horrible tracking (meaning that the synth note sounded does not correspond to guitar note played), latency, and unwieldy or expensive setups. The BOSS SY-1 suffers from virtually none of these problems. It fits into the familiar compact BOSS pedal footprint, has only a few control parameters promising just over 100 different synth tones, and the note tracking is stunningly fast. Even more impressive (and setting it apart from recent synth pedals from EHX and others), the note tracking is polyphonic, meaning that you can sound pads and other synth tones using chords, as long as you don't get too complex.It's really quite amazing how the SY-1 will completely transform the sound of your guitar or bass into a completely different instrument. I've had hours of fun already messing around with a looper and layering different sounds and note combinations on top of each other. You can suddenly create soundscapes (or approximate them, at least) that previously might have led you to pull out a synthesizer and laptop DAW.Where the SY-1 starts to run into a little bit of trouble, however, is in the types of sounds offered and limited control over sound shaping. My knowledge of actual synthesizers is pretty limited, but ADSR (Attack, Decay, Sustain, and Release) is a critical aspect of sound design, and one completely lacking in the SY-1. You can pick lead, bass, etc. preset from the SY-1, but then the only option you have to modify that is to adjust the tone (basically a low-pass filter, but very useful), and then the Rate/Depth of the waveform. So you have no control over whether your notes are punchy/percussive versus slow-building/swelling. In fact, my primary complaint about the bass sounds and may of the lead sounds is that while the note-tracking technology seems almost instantaneous, the actual resulting sound has a built-in attack that cannot be modified. And many of those notes sustain and cannot be cut off abruptly, even when palm-muting. Perhaps part of this is user error, and there are playing techniques you can develop to get more out of the pedal.Also, I really wish we could have gotten 1/4 to 1/2 as many of the bell and sound FX pages in exchange for additional "banks" of lead, bass, or pad sounds. I'm not sure how many users set up a $200 FX pedal in their signal chain just to make an explosion sound or whatever, and do nothing else until you change the settings. An entire bank of the Lead sounds, and several of the Bass ones involve musical fifths - those are certainly useful in a lot of synth context, but completely unusable in others, and I would have liked a wider variety of sounds instead of a half-hearted harmonizer feature.Finally, it should be noted that the pedal does not have MIDI, and there are no presets, so if you do find a particular sound that you like and want to come back to, you'll need to bend over and twist the knobs until you have it. That's pretty limiting in a live context.I am not sure of my complaints are fair or realistic given the price point and form factor, but I think they need to be known by prospective buyers of this pedal. This effects pedal is NOT a full-on substitute for a standard synthesizer. But it's a TON of fun, and I like to give extra credit for effects pedals that offer sounds I simply can't get from anywhere else. I can imagine ambient or praise & worship having a field day with this one, especially the pads, which are quite good and can be used with the Sound Hold feature (holding down the switch locks in and sustains the sounds, similar to the feature on the BOSS Tera Echo). The SY-1 is an amazing piece of technology that I could see growing increasingly fond of the longer I have to work with and adapt to its quirks.UPDATE (03/24/21) - I've owned the SY-1 for just over a year following the review above. My impressions of it are largely unchanged. What I will say is that are something it does quite well, and some things I have not been able to get it to do. Polyphony is great, and the note tracking (even on accurately-played chords) is great for pads, strings, etc. It can do some leads. But the sounds are just presets, and very...BOSS.I'm looking at the Source Audio C4 Synth, which is a very different take on a synthesizer pedal. It uses monophonic tracking, but has a much better emphasis on bass notes and single-note leads. It also has a robust online/mobile editor with community presets. I can't actually say that one looks "better" than the other, but I think they could complement each other quite well.

It has a couple effects that I probably won’t use much, but it’s a great pedal on my board. I have my SY-1 feeding into the Boss SL-2 Slicer feeding into a Boss PS-6 Harmonist into a Boss DD-8 Digital Delay into the Boss RV-6 Reverb. The sound is magical with tons of room for creating your own unique sounds. Since the pedals I listed above are all modulation pedals, they will sound best through the effects loop on your amplifier (if it is so equipped).The SY-1 also pairs well with other instruments, my violin sounds great through it and so does my Les Paul using a violin bow to play it. Keyboards sound great, ukulele’s, mandolins and bass guitar are all instruments the SY-1 can substantially enhance.In summary, fun pedal, built to Boss’s standards that can enhance your church playing or send you to freakyville. Very versatile pedal, highly recommended.

Tracks quickly and accurately. Love the organ and synth sounds.

I bought this as a gift for someone and they liked it. Boss pedals are usually a little expensive but work well and last.

Had to return. The settings were too dark, dirty for my application. Was trying to get a clean Moog vibe for an 80s set our band does. Could not get a good setting that tracked.

Otro de mis favoritos de bossPuedes hacer mucho con este pedal demasiados sonidos es muy divertido , cuenta con entrada a pedal de expresiónCombinarlo con un slicer sl-2 de boss y wow !!!!Sonidos espaciales electrónicos que hacen que tu guitarra no suene como una guitarra

O produto chegou muito bem embalado.O produto me atendeu muito bem, estou usando e funciona 100%.Estou satisfeito com a compra e indico.

I bought this to try to get some 8-bit kinds of sounds. Problem is, when you have a bunch of guitars and amps you play on, they all sound different. It's definitely neat to play around with to get a sound out of the norm.I did read that a synthesizer is the best way to go for 8-bit sounds though. I am just trying not to buy into a ton of other gear

Sul suono non c'è nulla da dire, è semplicemente incredibile. Quello che invece bisogna capire prima di acquistarlo visto il prezzo, è il contesto dove impiegarlo. Un pedale che se usato con parsimonia puo fare la differenza. Come sempre consegna puntuale.

Firstly, what everybody says about the tracking is correct. I tried out guitar synths back in the 80s: so much latency they were pretty much unplayable; but Boss have evidently put some serious work into this gizmo and the tracking is spot on, great note separation too (although on some settings, big complex chords will just sound mushy. But you can't have everything). It doesn't take long to dial in some very cool sounds. I've had this for about a week, used it tonight in an online session with an electronic/experimental band, and got some nice compliments. I've barely scratched the surface - the fun part about this thing is you can just keep going with different settings. Pairing it with other pedals ... the variations are endless. Currently I have it in a chain: Digitech Freqout, Boss Waza Blues Driver, Synth, Boss DD-500 delay, and ... wow! Can't wait to see how it handles modulation pedals. Maybe at some point I'll start to think that this could be even better if it were fully programmable rather than relying on presets, but at the moment, and especially at this price point, it's a very cool piece of kit.